DEVICE AND METHOD FOR FLUID MOTION ANALYSIS AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a fluid motion analyzing device which can stably analyze fluid motion and reduce a calculation quantity. SOLUTION: The fluid motion analyzing device 1 which analyzes the fluid motion according to a unsteady advectional diffusion equation is provided with an analysis unstableness judgment part 15 which judges whether it is difficult to analyze the fluid motion. Then when the judgment part 15 judges that it is difficult to analyze the fluid motion, an analysis is made by using a finite volume method. When the judgment part 15 judges that it is not difficult to analyze the fluid motion, an analysis is made by using a finite difference method.