ESTIMATION METHOD AND ESTIMATION PROGRAM OF FLUIDIC AND THERMAL CHARACTERISTICS OF TURBULENT FLOW ACCOMPANYING BUOYANCY

PROBLEM TO BE SOLVED: To provide a method for estimating fluidic and thermal characteristics of a turbulent flow accompanying buoyancy generated by heat transfer; and to provide a method executable by a computer. SOLUTION: In relation to two equation models of a turbulent flow in relation to a flow field accompanying heat transfer, this method for estimating a velocity distribution, a temperature distribution, and characteristic values of Reynolds stress, turbulent heat flux and the like of a turbulent flow field is used for calculating a velocity field by calculating the Reynolds stress by using equation (1) and equation (2) assuming that a term related to a forced convection flow and a term related to buoyancy are F and G, respectively, and for calculating turbulent flow heat flux by using equation (3) and equation (4) assuming that a term related to a forced convection flow of the turbulent flow heat flux and a term related to buoyancy of the turbulent flow heat flux are Ft and Gt, respectively, and thereby calculating a temperature field in the velocity field. COPYRIGHT: (C)2006,JPO&NCIPI