摘要
给出一种利用测定圆管对流换热温度场求解湍流流体热物性参数的方法。根据边界层理论,对管内湍流强制对流换热控制方程组进行简化,并通过考虑湍流运输中的密度脉动,对传统的混合长度湍流模型进行改进,基于该计算模型求解圆管湍流模型的温度场。采用Levenberg-Marquardt方法通过测量温度场反演了湍流对流换热控制方程中的黏度系数。结果表明,利用反问题方法通过测定温度场反演湍流流动流体的热物性参数具有可行性,精确度较高。
A method to identify the thermophysical parameters by measuring the pipe convection heat transfer temperature field was presented in this paper.The governing equations for turbulent forced convection heat transfer in pipe were simplified according to the boundary-layer theory.and an improved mixing length turbulence model was developed by introducing the effect of density fluctuations into the equations of turbulent transport,which can be applied to calculate the temperature field and velocity field inside the pipe.Using Levenberg-Marquardt method got the viscosity coefficient in the control equations by measured temperature field.The results show that IHTP is feasible for identifying the thermophysical parameters and has a higher precision.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第10期142-147,共6页
Periodical of Ocean University of China
基金
国家自然科学基金项目(51276174)
青岛市科技发展计划项目(12-1-3-77)资助
作者简介
梅宁（1961-），男，教授，博导。Email：nmei@ouc．edu．cn
