侧风条件下露天试车台流场特性的数值模拟

康宜勤; 王司昭; 张巍; 邢菲; 周伟

doi:10.13224/j.cnki.jasp.20220689

侧风条件下露天试车台流场特性的数值模拟

doi: 10.13224/j.cnki.jasp.20220689

康宜勤^1,,
王司昭¹,
张巍²,
邢菲¹,
周伟^2,*, ,

1.
厦门大学航空航天学院，福建厦门 361005
2.
中国航发沈阳发动机研究所，沈阳 110015

基金项目: 国家科技重大专项（2017-Ⅴ-0001-0050）

详细信息

作者简介:
康宜勤（1999-），男，硕士生，主要从事航空推进系统燃烧与流动研究

通讯作者:
周伟（1981-），男，研究员，硕士，主要从事航空发动机整机试验测试研究。E-mail：zhouwei_606@163.com

中图分类号: V231.3
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- 被引次数: 0
出版历程
- 收稿日期: 2022-09-14
- 网络出版日期: 2023-11-08

Numerical research on the flow field characteristics of the outdoor test stand under crosswind conditions

KANG Yiqin^1
,,
WANG Sizhao¹,
ZHANG Wei²,
XING Fei¹,
ZHOU Wei^{2,*
, ,}

1.
School of Aerospace Engineering，Xiamen University，Xiamen Fujian 361005，China
2.
Shenyang Engine Research Institute，Aero Engine Corporation of China，Shenyang 110015，China

摘要

摘要:
采用CFD数值仿真方法，针对典型露天台进行三维简化建模，建立合适的边界条件，利用侧风设备产生的侧风风场，对露天试车台与发动机进行三维流场仿真。在此基础上，开展典型侧风风速、风向条件下的露天台与发动机联合仿真，分析在不同侧风条件下发动机进口及试验风机出口的流场特性，阐述侧风风速、风向对侧风设备出口风场均匀性及发动机进口气动交界面流场的影响规律。结果表明：随侧风速度增加，侧风装置出口风场品质提高，发动机进口流场畸变程度增加；随侧风角度增加，侧风装置出口风场品质先提高后变坏，而发动机进口气动交界面的平均总压恢复系数和最大周向畸变指数变化趋势不同；最大周向畸变指数更适合评估本研究中发动机进口流场畸变情况。
- 侧风 /
- 动压稳定系数 /
- 露天试车台 /
- 进气畸变 /
- 流场特性
Abstract:
A three-dimensional flow field simulation on the outdoor test stand was performed with the CFD numerical simulation method by using crosswind from the crosswind device, then a simplified model was established, and appropriate boundary conditions were obtained. On this basis, joint simulations of the outdoor test stand and the engine under typical crosswind velocities and directions were carried out. From the results, the flow field characteristics of the crosswind device outlet and the engine inlet were analyzed. And the changes of the spatial uniformity of the flow field at the crosswind device outlet and the flow field at the air interface plane of the engine inlet under the influence of the crosswind velocity and direction were revealed. It can be concluded as follows: with the increase of the crosswind velocity, the quality of the flow field at the crosswind device outlet was improved and the flow field distortion at the engine inlet went worse. With the increase of the crosswind angle, the quality of the flow field at the crosswind device was improved and then went worse, and the average total pressure recovery coefficient and the maximum circumferential distortion index at the air interface plane of the engine inlet shared different variations. The maximum circumferential distortion index is more suitable to evaluate the flow field distortion at the engine inlet in this research.
- crosswind /
- dynamic pressure stability coefficient /
- outdoor test stand /
- inlet distortion /
- flow field characteristics

HTML

图 1 露天试车台简化模型

Figure 1. Simplified model of outdoor test stand

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图 2 侧风装置的边界条件

Figure 2. Boundary condition of the crosswind device

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图 3 发动机的边界条件

Figure 3. Boundary condition of the engine

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图 4 网格无关性及可靠性验证结果

Figure 4. Results of the grid independence verification

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图 5 侧风装置出口测量点示意图

Figure 5. Measurement points at the crosswind device outlet

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图 6 侧风风速与风向示意图

Figure 6. Sketch for velocity and orientation of the crosswind

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图 7 侧风装置出口流场的速度分布

Figure 7. Velocity distribution of the flow field at the crosswind device outlet

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图 8 A、B截面上的速度分布

Figure 8. Velocity distribution on section A and B

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图 9 45°侧风条件下风场核心区的速度分布

Figure 9. Velocity distribution in the core area of the flow field under the crosswind angle of 45°

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图 10 逆风（180°）条件下风场核心区的速度分布

Figure 10. Velocity distribution in the core area of the flow field under the crosswind angle of 180°

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图 11 不同侧风速度、方向条件下风机出口截面的动压稳定系数

Figure 11. Dynamic pressure stability coefficient under different crosswind velocities and crosswind directions

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图 12 AIP截面上的总压恢复系数分布（V=15 m/s）

Figure 12. Total pressure recovery coefficient distribution on AIP （V=15 m/s）

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图 13 各截面上的总压恢复系数分布

Figure 13. Total pressure recovery coefficient distribution on different planes

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图 14 平均总压恢复系数变化图

Figure 14. Variation of the average total pressure recovery coefficient

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图 15 最大周向畸变指数变化图

Figure 15. Variation of maximum circumferential distortion index

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表 1 仿真与试验结果对比

Table 1. Comparison of simulation and test

测点	仿真计算结果/ （m/s）	试验测量/（m/s）			相对误差/ %
测点	仿真计算结果/ （m/s）	平均值	最大值	最小值	相对误差/ %
1	2.16	2.29	3.54	1.23	5.7
2	3.79	3.23	5.77	1.92	17.0
3	3.97	4.08	6.77	2.6	2.7
4	2.34	2.01	3.72	1.35	16.0

下载: 导出CSV

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