Development and validation of computational wind field model (Wind scape)

Kim, D. ORCID: https://orcid.org/0000-0001-7626-4238 & Kim, B.-Y. (2012). Development and validation of computational wind field model (Wind scape). In: Proceedings of 4th Asian Joint Workshop on Thermophysics and Fluid Science, 14-17 October 2012.

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Abstract

Wind field data is essential for the accurate prediction of forest fire spread. For the accurate prediction of local wind field we developed computational fluid dynamics simulation procedure. Using terrain and wind information as input data three dimensional computational mesh is automatically generated. GIS data of the format DEM(Digital Elevation Map) is directly converted to quad surface mesh and full hexahedral space mesh is automatically generated. Around this mesh we made extended computational domain. Open source CFD program, OpenFOAM is used for the flow solver. Atmospheric flow boundary condition is used at inlet and roughness length is considered at terrain by rough wall function. Simple Graphic User Interface of mesh generation is developed for user convenience. Hill named Saebyul-Orum in Cheju Island is simulated and we compared the results with measured data. The validation cases shows high quality grid, easy of use, good robustness and accuracy. This program can be applied to wind environment analysis and forest fire spread prediction. For better accurate result Large Eddy Simulation will be studied in future research. And for more convenience, development of direct interface among this CFD program and GIS database program.

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