We analyzed the aerodynamic pressure exerted by a moving train.
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.
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【Analysis Model】 - The shape of the track structure is modeled as an embankment built on flat ground, with vehicles treated as a moving boundary model. - The size of the vehicle is 4.5m (W) × 24m (L) × 4.5m (H) for 4 vehicles. - The cross-sectional shape is rectangular. - Wind speed conditions involve a wind of 20m/sec directed towards the side of the train. - The speed of the vehicle is 100km/h. - The turbulence model used for analysis is DNS (Direct Numerical Simulation). 【Analysis Results】 - Due to the embankment's influence, significant crosswinds act on the train. - The pressure distribution results show a pressure difference of approximately 800Pa between the windward and leeward sides of the train. - The difference is greater for the leading vehicle. - A large negative pressure area is observed on the upper part of the vehicle, which is assumed to provide significant lift to the train. ● 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.