We will conduct a natural ventilation analysis of buildings with high ceilings during the summer and in calm conditions.
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.
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【Analysis Model】 - The size of the space, the shape of the building's roof, and the position and size of the grilles are accurately reproduced based on the actual structure. - The number of grids is 152×85×54=697,680. - The internal structure of the building is also detailed as it significantly affects the characteristics of airflow. - By including the external space in the analysis, it is possible to evaluate the ventilation air volume quite accurately. 【Analysis Results】 - The thermal conditions consider the heat intrusion into the space from solar radiation on the roof, as well as the human and lighting loads inside the building. - Openings are located at the top of the grilles, but the intrusion of outside air from the airlock is also taken into account. - Exhaust conditions using a pressurized fan are set at the ends of the building. - In the space near the airlock, the temperature rises by 1 to 2°C compared to the outside air temperature (33°C), and in the waiting area at the ends where many people gather, the rise is about 5°C. - Natural ventilation analysis under the influence of external wind, with wind defined in the external space, is also possible. ● For more details, please contact us or download the catalog.
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In environmental simulation, we are engaged in the independent development and sale of a three-dimensional fluid analysis program, as well as contract analysis services using this software. For over a decade, we have been involved in thermal fluid analysis in fields such as architecture, civil engineering, machinery, and electronics, handling numerous analyses and accumulating a wealth of know-how and knowledge. Our diverse analysis and visualization functions, honed through practical experience, have received high praise as CFD software from many companies and research institutions. ● Import function for BIM-compatible CAD data such as Revit and DXF ● Import function for geographic information system (GIS) data ● SuperCartesian function that freely represents diagonal boundaries and complex curved surfaces ● High-speed, high-precision radiation calculations and high-precision turbulence analysis using DNS ● Moving boundary problem analysis function that accommodates the movement of multiple objects in space ● User-friendly interface and easy-to-understand animation features Of course, we also provide software support and accept contract analyses. Focusing on air conditioning ventilation and wind environment analysis, we offer high cost-performance solutions for a wide range of problems, from simple and small-scale issues to complex and large-scale analyses. We look forward to your visit, along with our extensive analysis case studies.