Abstract
Abstract A new flow solver is developed for wind environment assessment in which a very complex flow field over a number of buildings should be taken into account. The adaptive Cartesian mesh algorithm is used so as to automatically generate meshes for complicated flow geometry. In this approach, a flow field is decomposed into a number of cubic cells and a cell is recursively divided into eight children cells where curvature of flow geometry or gradient of flow variables are large. The numerical scheme is based on the artificial compressibility method and the finite volume method is used for discretization. The cells are organized with the tree data structure and the numerical algorithm for the tree data structure is described. Computational results are presented and the efficiency of the algorithm is discussed.
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