The paper reviews the current state of the art in computational wind engineering, particularly as it relates to applications of numerical flow modeling for the evaluation of wind effectson buildings and their environment. The variability of computational results is presented and compared with that of wind tunnel measurements. Concerns are expressed regarding the current application of the nuemrical approach in the design practice in cases for which the computational results may not be adequate. Future challenges regarding the improvement of computational wind engineering methodologies are discussed and the importance of identifying resolution and numerical errors is emphasized.
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