| 摘要 |
PROBLEM TO BE SOLVED: To provide an air mix simulator precisely numerical simulating the mix degree of fluid when air having different temperature is mixed since it is necessary to develop an air mix chamber so as to sufficiently mix cool air and warm air in a vihicular air-conditioner. SOLUTION: A turbulent Prandtl number Prt is decreased as a temperature gradient is increased. And when the turbulence is larger than a first specified valueνt 1, the turbulent Prandtl number Prt is increased with turbulence of flow as the turbulence is increased. When the turbulence is smaller than a second specified valueνt 2, it is decreased and made to be a generally constant value when the turbulence of flow is between the first specified valueνt 1 and the second specified valueνt 2. This air mix simulator for the vihicular air-conditioner solves a equation of mass, an equation of motion, and an equation of energy while correcting the turbulent Prandtl number Prt as stated above.
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