@article{oai:chuo-u.repo.nii.ac.jp:00001247, author = {NOJIMA, Kazuya and KAWAHARA, Mutsuto}, journal = {中央大学理工学研究所論文集}, month = {Mar}, note = {application/pdf, In this study, simulation of wind flow in the city is investigated. For the reduction of the calculation time and storage requirement, the parallel computation which based on the domain decomposition method is employed. The wind flow is assumed as incompressible viscous flow. The Navier-Stokes equation is used as basic equation. For the spatial discretization, a mixed interpolation using the bubble function element is employed. The fractional step method introducing an intermediate velocity is applied. The computational methodology relies on the following ingredients: space discretization of the Navier-Stokes equation by the finite element approximations using tetrahedral element, time discretization by the second order accurate Crank-Nicolson scheme. The computation is carried out stably with the stabilizing method. From the result of calculation time, it can be said that the parallel computing is effective for the reduction of the calculation time. The high performance computing is obtained by using parallel computing. In the case of calculation by the super computer (IBM pSeries690), the parallel efficiency becomes higher than 100%. Thus the cause of this problem is investigated in this paper., 【査読有】}, pages = {17--29}, title = {Wind Flow Simulation in City using Computation Fluid Dynamics and Parallel Computing}, volume = {9}, year = {2004} }