水平非等温噴流を有する室内の流れ場・温度場の数値解析

抄録

The accuracy and reliability of numerical simulation for three dimensional nonisothermal jets in rooms based on a turbulence model are clarified by comparing the results, of simulations with those from experiments. The. mathematical turbulence model used here is a revised K-ε turbulence model which takes into account the effects of the anisotropic characteristics of nonisothermal flowfields on the model equations, particularly on the transport equation of ε. Two types of flow and temperature fields are analyzed both by simulations and by experiments. The first type is a flowfield where a cooled horizontal jet is discharged into an open space from a square-shaped supply opening located at the center of a vertical wall which is sufficiently wide in both the horizontal and the vertical directions. The other is a flowfield where a cooled horizontal jet is discharged from the same opening into an enclosed space in which the wall opposite to the jet is heated. The numerical simulations based on the turbulence model reproduce both types of flow and temperature fields successfully.