Patent ID: 7076414

Claim:
A gas flow simulation method comprising: forming an object having at least one concavity on a surface thereof by a computer and extracting a part of said surface of said object including said concavity; forming a spatial part from a space located on a periphery of said object in contact with said extracted surface of said object; dividing said spatial part into a plurality of lattice-shaped portions; flowing a gas into said spatial part in one direction along said surface of said object and discharging said gas in a different direction through an inside of said spatial part; computing a motion element of a flow of said gas for each lattice-shaped portion of said spatial part; and simulating a flow of said gas on the periphery of said concavity, wherein a height of each of said lattice-shaped portions located in a range less than 1/Re 0.5 (Re is Reynolds number, Re=representative velocityÃ—representative length/kinematic viscosity of gas) with respect to said surface of said object is set to not less than 1/(1000Â·Re 0.5 ) nor more than 1/Re 0.5 , and said height of each of said lattice-shaped portions located in a range not less than 1/Re 0.5 with respect to said surface of said object is set to not less than 1/Re 0.5 .