高超声速喷管流场不均匀性分析与改进

吴岸平; 范孝华; 郭雷涛; 何超; 许晓斌

doi:10.7638/kqdlxxb-2023.0037

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高超声速喷管流场不均匀性分析与改进

研究论文 | 更新时间：2026-05-28

- 高超声速喷管流场不均匀性分析与改进
- Flow quality analysis and improvement of hypersonic nozzle
- 空气动力学学报 2024年42卷第5期页码：38-44
- 作者机构：
  
  中国空气动力研究与发展中心超高速空气动力研究所,绵阳,621000
- 作者简介：
  
  吴岸平（1990—），男，湖南涟源人，研究方向：风洞试验技术. E-mail：wuanpingtech@163.com
  许晓斌*，研究方向：风洞试验技术. E-mail： Scmy-xxb@163.com
- 基金信息：
- DOI：10.7638/kqdlxxb-2023.0037
  中图分类号： V211.3
- 纸质出版：2024
- 稿件说明：
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吴岸平, 范孝华, 郭雷涛, 等. 高超声速喷管流场不均匀性分析与改进[J]. 空气动力学学报, 2024, 42(5): 38−44.

WU Anping, FAN Xiaohua, GUO Leitao, et al. Flow quality analysis and improvement of hypersonic nozzle[J]. 2024, 42(5): 38-44.
吴岸平, 范孝华, 郭雷涛, 等. 高超声速喷管流场不均匀性分析与改进[J]. 空气动力学学报, 2024, 42(5): 38−44. DOI： 10.7638/kqdlxxb-2023.0037

WU Anping, FAN Xiaohua, GUO Leitao, et al. Flow quality analysis and improvement of hypersonic nozzle[J]. 2024, 42(5): 38-44. DOI： 10.7638/kqdlxxb-2023.0037.

摘要

飞行器的发展，对风洞不同模拟条件下气动和操稳特性的准确预测提出了更高需求。风洞流场品质是影响试验数据精准度的主要因素之一，本文以某风洞马赫数5.5喷管为研究对象，开展喷管出口流场不均匀性研究。通过数值计算捕捉喷管内部微弱波系结构，分析喷管型面设计方法、型面加工精度和型面拼接处阶差等因素对喷管出口流场品质的影响，并与风洞流场校测结果进行对比分析，得出目前影响喷管出口流场品质的主要因素是拼接处阶差，并针对该因素提出了改进策略，通过对喷管合理分段减少波系对试验区域影响，以进一步提升风洞流场品质。

Abstract

With the development of aircraft

higher requirements are put forward for the accurate prediction of aerodynamic and operating characteristics under different wind tunnel simulation conditions. The flow quality of wind tunnel is one of the main factors affecting the accuracy of wind tunnel test data. A Mach 5.5 nozzle used as the research object in this paper

the non-uniformity of nozzle outlet flow field is studied. The structure of weak waves in nozzle is captured by numerical simulation. The influence of different factors on the quality of nozzle outlet flow field is analyzed

including the profile design method

profile machining accuracy and step joint at profile splicing. Combined with the comparison and analysis of the wind tunnel calibration results

it is concluded that the main factor affecting the quality of nozzle outlet flow field is the step joint at profile splicing. An improvement strategy of segment the nozzle properly is proposed to improve the quality of flow field.

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references

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