1. State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China 2. Jiangsu Turbine Seal High-Technology Co., Ltd, Nanjing 210046, China
The flow and temperature distributions in a brush seal are predicted using a three-dimensional computational fluid dynamics (CFD) model with software ANSYS. The results show the effect of the number of bristles rows on the leakage and the flow and temperature distributions in the brush seal (14 rows, 0.93 mm thick). The results relate the characteristics of the flow and temperature distributions around the bristles to the clearances between bristles and the influence of various operating parameters (pressure differential, interference, linear speed) on the maximum temperature. Results show that as the bristle row number increases, the leakage first decreases exponentially, then decreases linearly and slowly, and tends to a stable value in the end. The effects of interference and linear speed on the maximum temperature are more obvious.
黄首清,索双富,李永健,顾新民,王玉明. 刷式密封流场和温度场的3维数值计算[J]. 清华大学学报(自然科学版), 2014, 54(6): 805-810.
Shouqing HUANG,Shuangfu SUO,Yongjian LI,Xinmin GU,Yuming WANG. Numerical predictions of the flow and temperature distributions in a three-dimensional brush seal model. Journal of Tsinghua University(Science and Technology), 2014, 54(6): 805-810.
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