Project/Area Number  09305016 
Research Category 
GrantinAid for Scientific Research (A)

Section  一般 
Research Field 
Fluid engineering

Research Institution  Kyoto Institute of Technology 
Principal Investigator 
SATOFUKA Nobuyuki Kyoto Inst.of Tech., Faculty of Engineering and Design, Professor, 工芸学部, 教授 (30027891)

CoInvestigator(Kenkyūbuntansha) 
OBATA Masanori Kyoto Inst.of Tech., Faculty of Engineering and Design, Research Associate, 工芸学部, 助手 (80260628)
NISHIDA Hidetoshi Kyoto Inst.of Tech., Faculty of Engineering and Design, Associate Professor, 工芸学部, 助教授 (40164561)
MORINISHI Kouji Kyoto Inst.of Tech., Faculty of Engineering and Design, Associate Professor, 工芸学部, 助教授 (20174443)
MATSUNO Kenichi Kyoto Inst.of Tech., Faculty of Engineering and Design, Associate Professor, 工芸学部, 助教授 (70252541)
TOKUNAGA Hiroshi Kyoto Inst.of Tech., Faculty of Engineering and Design, Associate Professor, 工芸学部, 助教授 (10027906)

Project Fiscal Year 
1997 – 1998

Project Status 
Completed(Fiscal Year 1998)

Budget Amount *help 
¥19,200,000 (Direct Cost : ¥19,200,000)
Fiscal Year 1998 : ¥3,100,000 (Direct Cost : ¥3,100,000)
Fiscal Year 1997 : ¥16,100,000 (Direct Cost : ¥16,100,000)

Keywords  Parallel CFD / domain decomposition method / NavierStokes equations / lattice Boltzmann equation / finite difference method / homogeneous isotropic turbulence / twophase flow / 並列計算流体力学 / 領域分割法 / ナビエ・ストークス方程式 / 格子ボルツマン方程式 / 差分法 / 一様等方性乱流 / 二相流 / ナビェ・ストークス方程式 
Research Abstract 
NavierStokes cods based on vorticity velocity formulation and lattice Boltzmann code for in compressible flows, developed in the previous year, were parallelized by using domain decomposition method and implemented on 15 workstation connected via Ethernet networks using MPI/PVM as message passing software. In order to extend applicability of the incompressible NavierStokes code, a code was developed, in this year, based on a combination of solution adaptive hierarchical Cartesian grid method and virtual boundary method for solution of flow past arbitrary shape bodies. In the lattice Boltzmann approach, 9 velocity square lattice 2dimensional code was extended to 3dimensions by using 15 velocity cubic lattice model. It was found bat higher parallel speed up was obtained for 15 velocity cubic lattice in an application to direct simulation of homogeneous isotropic turbulence than that in 2dimensional simulation with 9 velocity square lattice model. In corporation on nonuniform lattice and extension to multiphase flow by SC model wear also attemptedin the lattice Boltzmann approach. These results was presented at Parallel CFD'98 held at Hsinchu, Taiwan and will be presented at Parallel CFD'99 to be hold in Williamsburg, Virginia USA.
