论文:2021,Vol:39,Issue(4):858-864
引用本文:
郑光华, 水飞, 胡金鑫, 刘鑫, 肖华中. 不同结构探针对压气机进口级流场及测量结果的影响[J]. 西北工业大学学报
ZHENG Guanghua, SHUI Fei, HU Jinxin, LIU Xin, XIAO Huazhong. Effects of probes with different structures on the flow field and measurement results of imported compressors[J]. Northwestern polytechnical university

不同结构探针对压气机进口级流场及测量结果的影响
郑光华1, 水飞1, 胡金鑫1, 刘鑫1, 肖华中2
1. 西北工业大学 动力与能源学院, 陕西 西安 710129;
2. 中国航发湖南动力机械研究所 总体研究部, 湖南 株洲 412002
摘要:
采用数值模拟的方法,研究了某涡轴发动机压气机进口级流道中2种不同类型的总压探针和总温探针的测量精度以及这两种探针对流场的影响,分析探针在巡航、最大连续、起飞3个典型工作状态下,探针结构以及安装位置对探针测量结果的影响。研究结果表明:发动机进口流量越大,探针的测量误差越大;相较于总温探针,总压探针测量准确度受流量的影响更大;速度均匀度受发动机工况的影响较小,主要与插入的探针结构有关;越靠近支板的总压探针,测量误差越大;探针安装位置对出口处总压损失系数的影响较小。
关键词:    压气机进口级    总压探针    总温探针    测量误差    速度均匀度    总压损失系数   
Effects of probes with different structures on the flow field and measurement results of imported compressors
ZHENG Guanghua1, SHUI Fei1, HU Jinxin1, LIU Xin1, XIAO Huazhong2
1. School of Power and Energy, Northwestern Polytechnical University, Xi'an 710129, China;
2. General Research Department, China National Aero-Developmerot, Zhuzhou 412002, China
Abstract:
In this paper, the measurement accuracy of two different types of total pressure probe and total temperature probe in turboshaft engine compressor inlet channel and the influence of these two probes on the flow field through numerical simulation was studied. At the same time, the influence of the probe structure and installation position on probe measurement results under three typical working conditions of cruise, maximum continuous and takeoff was analyzed. The simulation results showed that the higher the engine inlet flow rate, the greater the measurement error of the probe. Comparing with the total temperature probe, the total pressure probe measurement accuracy is more influenced by the flow rate. The velocity uniformity is less affected by the engine operating conditions and is mainly related to the structure of the inserted probes. The closer the total pressure probe to the support plate, the greater the measurement error. The probe installation position has a small effect on the total pressure loss coefficient at the outlet.
Key words:    compressor inlet level    total pressure probe    total temperature probe    measurement error    speed uniformity    total pressure loss coefficient   
收稿日期: 2020-11-10     修回日期:
DOI: 10.1051/jnwpu/20213940858
通讯作者:     Email:
作者简介: 郑光华(1978-),西北工业大学副教授,主要从事涡轮叶片新型冷却、涡轮气动热力学研究。
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