加热法测量湿度探针取样过程的数值模拟与分析  

Numerical Simulation and Analysis of the Sampling Process of Wetness Measurement Probe through the Use of a Heating Method

作　　者：李炎锋[1] 王新军[1] 徐廷相[1] 刘志江[2] 

机构地区：[1]西安交通大学 [2]西安热工研究院

出　　处：《热能动力工程》1999年第4期289-292,共4页Journal of Engineering for Thermal Energy and Power

基　　金：动力工程多相流国家重点实验室基金;陕西省科委基金

摘　　要：建立了加热法测量湿度探针进口附近区域流场的数学模型，并通过对其进行数值模拟来分析由于非等动能取样及汽流方向偏离轴线所造成的测量误差。A mathematical model has been set up for a region near the inlet of a heating method based wetness measurement probe. By way of a numerical simulation an analysis was conducted of the measurement error due to a non isokinetic sampling and an axial deviation in the steam flow direction. The results of such an analysis provide useful data for the design and engineering application of the heating method based wetness measurement probes.

关 键 词：等动能取样 流场模拟 多孔度 湿蒸汽 湿度 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程] TH837[机械工程—仪器科学与技术]