環境シミュレーション List of Products and Services

We have been engaged in various thermal fluid analysis services for over a decade, working hard and brainstorming with many clients to accumulate a wealth of know-how, insights, and presentation skills. The contracted analysis we provide has many advantages, such as: - Usable even by users who cannot operate software. - Convenient when time is limited or when the volume of analysis work is large. - Results can be interpreted by beginners in reports and other documents. - Conducted by experts, ensuring no concerns about the accuracy of the results. We promise to further enhance the level of analysis through organic collaboration with our clients while shedding light on unknown phenomena through simulation and opening new horizons of knowledge. For more details, please contact us or download the catalog.

• Surveying
• Architectural CAD
• Civil Engineering CAD

The close-up tsunami load simulation research began with the aim of re-evaluating the tsunami load specifications that evacuation buildings should possess, by gaining a detailed understanding of the behavior of loads on buildings caused by tsunamis resulting from the frequent occurrence of subduction zone earthquakes. However, in light of the unprecedented damage caused by the Great East Japan Earthquake and the resulting massive tsunami, there has arisen a necessity for simulations that were not included in previous settings. Specifically, tsunami load evaluations for wave heights of 10 to 20 meters and assessments of tsunami loads on groups of buildings are now considered essential and urgent for the design of facilities constructed along the coast, not just for evacuation buildings. For more details, please download the catalog.

• Flood prevention facilities, fire tanks, and flood control ponds
• Surveying
• others

The airflow analysis within the power supply unit aims to clarify the characteristics of airflow within a typical power supply unit used as an analysis model. The power supply unit plays a crucial role in providing stable power to computers, including PCs, and since it contains many high-temperature heat-generating components, how efficiently it can dissipate heat is a significant point. For more details, please download the catalog.

• Surveying
• others

In the thermal airflow analysis of electronic device enclosures, we conducted ventilation analysis through numerical simulations within the enclosures. With the improvement of technology, electronic components are increasingly shrinking, making thermal issues within electronic device enclosures unavoidable. The placement of high-heat-generating components and ventilation parts such as fans can significantly affect the performance of the devices themselves. We conducted the analysis to gain insights into this. For more details, please download the catalog.

• Surveying
• others

SuperCartesian: In the analysis of airflow within the engine cylinder, we accurately represented the intake manifold and valve shapes, and conducted airflow analysis from the intake manifold to inside the engine cylinder. When predicting the performance of an internal combustion engine, it is crucial to understand the airflow characteristics of the mixture being delivered into the cylinder. These airflow characteristics are greatly influenced by the shapes of the intake manifold and valves, which in turn affect combustion efficiency. For more details, please download the catalog.

• Surveying
• others

Moving Boundary: The analysis of airflow around cooling towers during fan rotation aims to clarify the characteristics of airflow both inside and outside the cooling tower, using a general cooling model as the analytical framework. Cooling towers are one of the air conditioning systems commonly installed in large commercial facilities, factories, and government offices, and they are devices used to cool circulating water. By spraying water in droplets from above and blowing air with a fan to contact the outside air, the temperature is lowered to produce cooling water. For more details, please download the catalog.

• Privacy louvers and louver shutters
• Air compressors, blowers and pumps
• Surveying

Moving Boundary: In the flow analysis of a mixing tank caused by the rotation of an impeller, we conducted a numerical simulation with moving boundaries to visualize the behavior of the fluid generated by the rotation of the impeller within the tank. The mixing and blending of fluids in a mixing tank is one of the important processes in the chemical and bio fields. There are various types of blade shapes, and the goal is to sufficiently mix and blend the contents inside the mixing tank. For more details, please download the catalog.

• Surveying
• others

Moving Boundary: The internal airflow analysis of the centrifugal fan aims to investigate the airflow characteristics within the fan by modeling the basic shape of the centrifugal fan and applying moving boundary conditions to the blades. The centrifugal fan is a multi-blade fan with forward-curved blades, and its characteristics involve many factors such as the shape of the blades, the number of blades, and the shape of the casing. For more details, please download the catalog.

• Surveying
• others

In the thermal fluid analysis of the continuous casting machine mold, we conducted a thermal fluid analysis related to the continuous casting equipment in steelmaking plants. We faithfully modeled the mold and immersion nozzle to reproduce the flow within the molten steel bath, which is extremely important for controlling the thickness of the solidification shell and reducing non-metallic inclusions, making it an essential requirement for high-speed casting equipment. In this analysis, we simulated the impact of the flow of molten steel entering the mold from the immersion nozzle, as shown in the diagram below. For more details, please download the catalog.

• Surveying
• others

The thermal flow analysis within the thermal storage tank reproduces the ducts and structures inside the tank and conducts thermal flow analysis regarding the flow velocity and temperature stratification of the liquid within the tank. When predicting the performance of the thermal storage tank, it is crucial to understand the temperature distribution changes of the fluid inside the tank. This characteristic is greatly influenced by the shape and flow velocity within the tank, affecting the temperature stratification of the liquid in the thermal storage tank. For more details, please download the catalog.

• Surveying
• others

The analysis of the wind environment around the Namba Oi Mansion examined the impact on the wind environment in the neighboring area, focusing on a residential complex located in the urban area of Ota Ward, Tokyo, during the summer (southwest wind) and winter (north wind). Issues related to wind environments (building wind) frequently arise with the construction of relatively low-rise condominiums, around 10 stories, primarily in Tokyo. The situation is such that a building of about 30 meters in scale will be constructed in an area densely populated with single-story buildings (approximately 6 meters high). Therefore, if the planned building is positioned in a way that obstructs the wind paths of the block, there are concerns about the deterioration of the surrounding wind environment. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

The analysis of the wind environment around high-rise buildings aims to investigate the degree of impact on the surrounding area, which inevitably increases. In urban areas, it is not uncommon for buildings over 100 meters tall to be constructed; however, in such cases, the impact on the wind environment (building wind) differs significantly compared to situations where relatively low-rise apartments are built in residential areas. For buildings exceeding 100 meters, the areas of reverse flow that appear on the approach (windward) side, as well as the wakes (downstream vortices) that occur behind, become very large, resulting in a correspondingly significant impact on the surroundings. This analysis examined the changes in the wind environment when high-rise buildings are constructed in areas where the surroundings are relatively open. For more details, please download the catalog.

• Other civil engineering works
• Surveying
• others

The analysis of the wind environment around the condominium was conducted for condominium buildings located in urban areas, focusing on the results for summer (southwest wind) and winter (north wind). When constructing or expanding buildings in urban areas, the wind conditions within the site or surrounding area can change significantly. This is known as the wind environment (building wind) issue. Generally, an investigation is conducted on the changes in wind speed distribution caused by the presence of the planned building for all wind directions (8 or 16 directions), comparing it to the conditions before construction. For a simplified evaluation, analysis is performed only for the prevailing winds of each season. For more details, please download the catalog.

• Other civil engineering works
• Scientific Calculation and Simulation Software
• Other Software

Moving Boundary: The analysis of wind pressure acting on a moving train was conducted using numerical simulations that take into account the moving boundary. It has been pointed out that strong winds, such as those caused by typhoons, pose a risk of overturning moving trains. Therefore, understanding the wind pressure acting on a moving train is important. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

The purpose of wind environment analysis in sloped terrain is to examine some of the difficult issues that exist within wind environment analysis. Analyzing areas that include sloped and undulating terrain is one of these issues. The reason for this is that the presence of elevation differences between buildings and their foundations makes it challenging to create analysis models. Another reason is the question of how to set the conditions for approaching wind on sloped terrain. Like in typical flat terrain analysis, a power-law distribution is generally used as a basis, but it is preferable to establish a distribution along the slope's inclination. Furthermore, there is a need to set the height of the sky plane higher than in standard analyses. For more details, please download the catalog.

• Surveying
• others

The air conditioning analysis in a refrigerated warehouse was conducted using an example of a freezer equipped with an automatic conveyor. Air conditioning analysis has traditionally been performed in large spaces such as atriums and domes, but recently it has increasingly been applied to specialized spaces as well. Examples include automated warehouses, clean rooms, underfloor air conditioning, displacement systems, and food factories, each of which often has stringent air conditioning performance requirements, making it difficult to set equipment specifications. For more details, please download the catalog.

• Duct related equipment
• Scientific Calculation and Simulation Software
• Other Software

The analysis of the thermal environment in a warm water pool focused on air conditioning during heating, where the cold draft from the circular roof glass surface becomes a problem. The temperature distribution in large spaces tends to be more disturbed compared to smaller spaces. This is generally because large spaces are more prone to uneven wall infiltration and heat loads, making it difficult for the conditioned air to circulate in the occupied zone. Recent air conditioning analyses have become capable of accurately simulating actual properties, including the three-dimensional shape of the structure, the behavior of supply and return air, and various heat loads. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

The thermal flow analysis of the cooling tower was conducted to predict white smoke generation during winter for a large 8-cell unit, taking into account external wind and humidity (water vapor movement). There are many thermal flow devices related to building equipment whose characteristics and behaviors are not well understood. The cooling tower is one of them, but by precisely setting the structure, flow conditions, and thermal conditions of each cell of the cooling tower, it becomes possible to reproduce the thermal flow state quite accurately. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

The air conditioning analysis within the casting factory was conducted to assess the air conditioning of the factory space with external ventilation during calm conditions. In facilities such as factories, functionality such as air conditioning performance and ventilation efficiency takes precedence over design. When considering the ventilation and air conditioning performance of the factory space, even if the ventilation and air conditioning airflow is set according to the heat generation of each section, the movement of air between sections does not guarantee that the living area is always maintained at the specified temperature. Therefore, careful consideration of the nozzle arrangement and airflow settings is necessary. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

It is known that there are significant fluctuations in speed and pressure before and after trains pass each other in narrow spaces such as tunnels and subway stations. This is very important for the design of vehicles, tunnels, and associated structures. In this analysis, we simulated the airflow and pressure fluctuations affecting the surroundings when the vehicles pass each other, using a moving boundary problem. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

The air conditioning analysis of an electrical components factory was conducted using a factory with a clean room as an example. Unlike general architecture, where aesthetics are emphasized, in facilities such as factories, functionality such as air conditioning performance and ventilation efficiency takes precedence over design. Even when achieving the same ventilation and air conditioning performance, there is often significant potential for cost reduction regarding the layout of ducts and outlets. For more details, please download the catalog.

• Duct related equipment
• Scientific Calculation and Simulation Software
• Other Software

It is known that there are significant speed and pressure fluctuations at the front and rear of vehicles running in narrow spaces such as tunnels and subway stations. In this analysis, we conducted simulations regarding the impact on the area around the platform (airflow, pressure) when a train passes, using the moving boundary problem. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

What are the ventilation characteristics around the windbreak room of the sliding door? In sliding doors that open and close based on traffic volume, it is important to capture the temporal changes in ventilation airflow. This analysis treats the sliding part as a moving object and aims to gain insights into the circulation of air inside and outside. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

What are the ventilation characteristics of revolving doors? In revolving doors, where the opening area changes significantly over time, it is important to capture the temporal variation of the ventilation airflow. This analysis treats the revolving section as a moving object, aiming to gain insights into the circulation of air inside and outside. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

Thermal fluid equipment related to building facilities often has many unknown characteristics and behaviors. Cooling towers are one such example, but by precisely setting the structure, flow conditions, and thermal conditions of each cell of the cooling tower, it is possible to reproduce the thermal flow state quite accurately. In this analysis, we conducted a cooling tower thermal flow analysis considering external winds to examine the impact of multiple cooling towers with different specifications on the temperature distribution of the heated air released from each cell in relation to the airflow conditions around high-rise buildings. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

To reduce air conditioning load, natural ventilation that actively circulates outside air into the building is effective. Recently, incorporating structures such as eco-voids and eco-shafts into the basic design stage for efficient natural ventilation has gained attention. At that time, the size of the openings for bringing in outside air and their installation positions must be appropriate. In this analysis, we conducted ventilation analysis to examine the relationship between opening conditions and ventilation states. We modeled the target building and accurately reproduced the internal and external spaces of the building. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

The entrance hall targeted for analysis is a large space with a height of approximately 20 meters. During the basic design phase, it is crucial to verify whether there are any issues with the temperature distribution and airflow distribution in the living area, based on the position, number, wind speed, and temperature of the air conditioning air outlets. This is very important for considering comfort and energy efficiency. Additionally, changes in conditions due to the seasons must also be taken into account. In this analysis, we detailed the internal space shape of the building, the arrangement of air outlets and inlets, and the thermal load, conducting air conditioning analysis for summer, winter, and transitional periods. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

In recent years, there have been many cases where natural ventilation utilizing outside air is actively incorporated during the intermediate period and other times. Among these, a ventilation method that uses shafts installed within the building as exhaust and supply air systems has been considered from the basic design stage to efficiently carry out natural ventilation. The selection of appropriate locations and sizes for supply and exhaust openings is of great importance, and conducting thermal airflow simulations allows for insights into the overall operation of the building. In this analysis, we assumed windy conditions and conducted thermal airflow simulations based on the plans from the basic design stage. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

In server rooms and data centers, there are many servers and IT equipment, and heat management is essential for their stable operation. As a measure, we face the exhaust fans on the back of the server racks towards each other to create a pathway (hereinafter referred to as the hot aisle) that primarily directs exhaust from the racks upward, and we face the intake sides on the front of the server racks towards each other to create a pathway (hereinafter referred to as the cold aisle) that primarily introduces cool air from the floor into the server racks, alternating them to enable efficient exhaust. However, at the top of the server racks, there is a possibility of drawing in high-temperature exhaust from the equipment (short-circuiting), so we considered measures and conducted a comparison based on the presence or absence of a partition (hereinafter referred to as aisle capping) at the top of the cold aisle. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

The analysis of natural ventilation in large spaces examines the natural ventilation of buildings with large spaces during summer and calm conditions. In large spaces, there is often a trial-and-error approach to maintaining a comfortable temperature distribution by relying not only on air conditioning but also on natural ventilation. During summer and transitional periods, the temperature distribution within the space often stratifies, with higher temperatures at the top due to solar radiation and wall conduction. Therefore, if there are openings at the upper part, density-driven convection can occur, allowing hot air to be expelled outside the building. In recent thermal environment analyses, if the size, position, and opening ratio of the openings are known, it is also possible to directly calculate the ventilation airflow rate. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

The ventilation analysis of wholesale markets involved the natural ventilation analysis of building complexes in the presence of external winds. In recent years, advancements in numerical computation techniques for thermal environment analysis have made it possible to conduct analyses with over a million meshes even on personal computer bases, allowing for detailed construction of building structures. If the detailed structure of the building can be represented, it becomes possible to directly evaluate the state of wind circulation by simultaneously solving the thermal and flow fields of the internal and external spaces. For more details, please download the catalog.

• Scientific Calculation and Simulation Software
• Other Software

[Purpose of Analysis] This is an analysis case aimed at understanding the thermal environment in areas where people move, such as concourses and corridors, during the construction of a train station building. Due to the influence of the arrangement of windows in the station building and the solar radiation transmitted through those windows, as well as the fluctuation in the number of people staying inside the station at different times, the thermal environment varies by time. Therefore, it is currently difficult to grasp the thermal environment during the basic design phase of the station building. In this analysis case, we modeled a hypothetical train station in a regional city during the summer at 4 PM using WindPerfectDX. We considered the solar radiation load transmitted and absorbed by the fixed windows on the west side of the concourse, the heat load from human bodies and lighting, and the infiltration load from the roof and walls, with the aim of understanding the thermal environment in the concourse and corridors of the station building.

• Scientific Calculation and Simulation Software
• Other Software

We have developed a software called "PocketMyHome" in collaboration with Computer System Research Institute Co., Ltd., which enables ventilation simulation based on WebCAD, and we have started providing it to our customers. This product allows for 3D shape input from the web, simulation execution, and result display, all operable on CAD, achieving a revolutionary speed-up with a total time of about 15 minutes from input start to result display. The calculation engine uses our WindPerfect, which is well-known for its analytical accuracy. Please take a look at the demo to confirm its capabilities. For more details, please contact us or download the catalog.

• others

◆Moving Boundary Problem: It is possible to move multiple objects independently and arbitrarily. The analysis of moving boundary problems, such as the movement of complex objects, opening and closing doors, and rotating machinery, which was essentially impossible with non-structural grids, can now be easily performed. It is also possible to feedback the fluid forces acting on the objects into their motion. ● Changes in degrees of freedom such as axial movement and rotation around each coordinate axis can be achieved through simple motion definitions. ● Analysis is possible not only for solid structures with volume but also for thin-walled (shell) structures without thickness. ● Various conditions can be assigned to moving objects, such as heat transfer and mass transfer boundaries, as well as free surface flows. ● The situation of time-varying flow fields can be animated along with the movement of the moving objects for detailed examination. ◆ e-flowDX Tsunami Load Analysis Version In response to the unprecedented damage caused by the Great East Japan Earthquake and the resulting tsunami, the need for simulations that were not included in previous settings has arisen. Specifically, the evaluation of tsunami loads with wave heights of 10 to 20 meters and the assessment of tsunami loads on groups of buildings are now considered essential and urgent for the design of facilities built along the coast, not limited to evacuation buildings, as well as for urban planning.

• Flood prevention facilities, fire tanks, and flood control ponds
• Scientific Calculation and Simulation Software
• Other Software

●WindPerfectDX2012 Edition2 Released! The software has been reborn as a tool that can solve problems in the fields of architecture and civil engineering, ranging from simple to complex and large-scale, with easy operations for airflow and temperature. ―――――― ◆Features 1. Wind environment and external airflow simulation 2. Heat island simulation 3. Natural ventilation simulation 4. Wind load simulation (planned for release) 5. Other simulations (rainproofing and snowproofing issues, performance verification of cool bits, and other thermal fluid-related problems) ―――――― <Simple interface, 3D CAD data import function, and diverse result visualization features> - With an easy-to-use interface, built-in various data, and excellent 3D graphics visualization capabilities, it is widely usable from beginners in analysis to heavy users of CFD. - By incorporating CAD data import and CFD parts functions, it strongly supports simulation operations in BIM. - Equipped with numerous convenient functions for various analyses, such as wind damage rank evaluation, radiation calculation, PMV evaluation, condensation judgment, heat island, parameter evaluation, and heat balance check for airflow and heat.

• Scientific Calculation and Simulation Software