低温风洞运行压比相关性研究及应用

黄知龙; 王宁; 廖达雄

doi:10.7638/kqdlxxb-2021.0020

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低温风洞运行压比相关性研究及应用

研究论文 | 更新时间：2026-05-28

- 低温风洞运行压比相关性研究及应用
- The correlation between the running pressure ratio and state parameters in a cryogenic transonic wind tunnel
- 空气动力学学报 2021年39卷第5期页码：1-6
- 作者机构：
  
  1. 南京航空航天大学非定常空气动力学与流动控制工业和信息化部重点实验室,南京,210016
  2. 中国空气动力研究与发展中心设备设计与测试技术研究所,绵阳,621000
- 作者简介：
  
  黄知龙（1976-）,男,湖北潜江人, 研究员, 研究方向: 风洞气动设计. E-mail: huangzl401@163.com
  廖达雄*（1963-）,男,研究员,研究方向:风洞气动设计. E-mail: liaodaxiong@sohu.com
- 基金信息：
  
  国家自然科学基金（52076164）
- DOI：10.7638/kqdlxxb-2021.0020
  中图分类号： V211.74
- 纸质出版：2021
- 稿件说明：
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黄知龙, 王宁, 廖达雄. 低温风洞运行压比相关性研究及应用[J]. 空气动力学学报, 2021, 39(5): 1−6.

HUANG Zhilong, WANG Ning, LIAO Daxiong. The correlation between the running pressure ratio and state parameters in a cryogenic transonic wind tunnel[J]. 2021, 39(5): 1-6.
黄知龙, 王宁, 廖达雄. 低温风洞运行压比相关性研究及应用[J]. 空气动力学学报, 2021, 39(5): 1−6. DOI： 10.7638/kqdlxxb-2021.0020

HUANG Zhilong, WANG Ning, LIAO Daxiong. The correlation between the running pressure ratio and state parameters in a cryogenic transonic wind tunnel[J]. 2021, 39(5): 1-6. DOI： 10.7638/kqdlxxb-2021.0020.

摘要

低温风洞流场参数快速精确控制需要建立驱动风扇功率与马赫数、雷诺数、压力和温度等运行参数间准确动态传递模型。以0.3 m低温风洞初步运行压比和状态参数测试数据为对象，归纳分析发现风洞运行压比与试验马赫数平方成近似线性关系，且相同马赫数下测试数据点分布与雷诺数成有序关系，基于该特性成功构造马赫数和雷诺数组合幂函数，并建立风洞运行压比与组合幂函数的线性关联式。结果表明在马赫数小于1.0和宽广雷诺数变化范围下该动态模型与测试数据具有良好的一致性。同时，利用空气动力学方程式也推导验证了该动态模型的理论正确性。该动态模型的建立使得风洞运行液氮需求和压缩机功率以相对简单的方式与试验状态相关联，将其应用于风洞前馈控制，必将简化风洞控制流程，缩短每个数据点的稳定时间，节约液氮消耗量。

Abstract

To achieve rapid and precise control of flow parameters in Cryogenic Wind Tunnels

the relationship between the driven-fan power and the wind tunnel operating parameters (such as Mach number

Reynolds number

pressure

and temperature) should be well described. Based on the running pressure ratios and state parameters of a 0.3-Meter Cryogenic Wind Tunnel at CARDC

it is found that the running pressure ratio is approximately linear with

−0.095

where

and

are respectively the Mach number and the Reynolds number. This model has been further verified theoretically. The run

ning pressure ratios estimated by this model are in good agreement with the experimental results within a wide range of Reynolds numbers at the test section with the Mach number less than 1.0. In addition

this model relates the liquid nitrogen consumption and compressor power with the tunnel operation state in a relatively simple way. Thus its application in the feed-forward control of wind tunnels will simplify the control process

minimize the consumption of the cooling liquid nitrogen

and reduce the stabilizing time considerably.

关键词

Keywords

references

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