轴向进气位置对转静盘腔传热影响的分析

本文对具有不同轴向进气位置的两个转静盘腔的流动和传热进了数值模拟。这两个盘腔除进气位置不同外,具有相同的几何结构,进气流量及温度边界条件。在盘腔的核心区采用标准k-ε紊流模型,近壁区采用单方程模型。求解并分析了包括流体域,固体域的整体温度分布以及流固界面上的努塞尔数分布。

ANALYSIS OF THE EFFECTS OF DIFFERENT AXIAL POSITION OF INFLOW ON HEAT TRANSFER OF A ROTOR-STATOR DISK CAVITY

In this paper the flow and heat transfer of two rotor-stator disc cavities with different axial position of inflow were studied numerically. The two disc cavities have the same structure, through mass flow rate and boundary condition, except for the different axial position of inflow. In the core region of the cavity the standard k-e turbulence model was employed, and in the near wall regions single equation model was used. The velocity field inside the disk cavity, the whole temperature field including fluid region and solid region, and Nusselt number on the interface between fluid region and solid region were calculated and analyzed.