刷式封严流动和换热的数值模拟

推进技术 ›› 1999, Vol. 20 ›› Issue (1): 65-67.

刷式封严流动和换热的数值模拟

丁水汀,陶智,徐国强

北京航空航天大学动力系;北京航空航天大学动力系;北京航空航天大学动力系

发布日期:2021-08-15

NUMERICAL SIMULATION ON FLUID FLOW AND HEAT TRANSFER OF A BRUSH SEAL CONFIGURATION

Dept.of Jet Propulsion,Beijing Univ.of Aeronautics & Astronautics,Beijing,100083;Dept.of Jet Propulsion,Beijing Univ.of Aeronautics & Astronautics,Beijing,100083;Dept.of Jet Propulsion,Beijing Univ.of Aeronautics & Astronautics,Beijing,100083

Published:2021-08-15

摘要/Abstract

摘要： 对刷式封严的流动和换热进行了数值模拟。计算中对结构复杂的刷丝部分采用多孔介质处理，用Ｄａｒｃｙ定律取代动量方程，能量方程采用改进形式，而对其它部分采用简单的矩形网格进行完全Ｎ－Ｓ求解。Ｄａｒｃｙ定律的扩散系数由所提出的实验方法确定。典型的计算结果显示所提方法是正确、合理而可行的。

关键词: 密封;密封漏泄;热传递;数值仿真

Abstract: The fluid flow and heat transfer through a brush seal configuration were numerically simulated.The brush bristles were taken as a porous material and the Darcy law was used instead of the standard momentum equation.For the rest of computational domain,the N S equations in the original forms were applied.A simple experimental method was proposed to obtain the diffusion coefficient of the Darcy law.A typical calculation reveals that the methodology is simple and effective

Key words: Sealing;Seal leakage;Heat transfer;Numerical simulation

丁水汀,陶智,徐国强. 刷式封严流动和换热的数值模拟[J]. 推进技术, 1999, 20(1): 65-67.