| 白亚磊*,明晓,丁涛.七孔探针可压缩流场测量研究[J].实验力学,2010,25(6):667~672 |
| 七孔探针可压缩流场测量研究 |
| Study of Compressible Flow Measurement based on Seven-Hole Probe |
| 投稿时间：2010-03-28 修订日期：2010-05-14 |
| DOI： |
| 中文关键词: 七孔探针 计算流体力学 可压缩流测量 数值校准 |
| 英文关键词:seven-hole probe computational fluid dynamics compressible flow measurement numerical calibration |
| 基金项目:国家973项目(2007CB714600)资助 |
|
| 摘要点击次数: 718 |
| 全文下载次数: 438 |
| 中文摘要: |
| 介绍了七孔探针用于亚音速可压缩流的标定方法。作为一种可以同时获得流动速度大小、流动偏角、总压和静压的气动测量装置，七孔探针被广泛应用于各种流动测量,包括可压缩流动。但是它的校准过程周期很长，代价昂贵，影响了探针的推广。本文以数值计算为手段，对七孔探针进行亚音速可压缩流校准与测量的研究。结果表明，其校准拟合精度流动角为2%，内外区的总静压相对标准偏差都没有超过3%，高于相同状态下的实验校准精度。在实际应用中，本方法用于指导传统实验标定方法，可以节约大量的标定时间和成本，使七孔探针在亚音速可压缩流的测量变得简单可行。 |
| 英文摘要: |
| This paper presents a calibrating method of measuring relative flow velocity, flow angle, local total and static pressure for subsonic compressible flows using seven-hole probe. Seven-hole probe (SHP) is a device that can simultaneously measure the pressure and velocity of a steady flow, especially the parameters of compressible flow. However, the costly and time-consuming calibration impedes its extensive application. Study of calibration and measurement method for compressible flow was carried out using seven-hole probe (SHP) based on the data from numerical simulation. Results show that the accuracy of calibration fitting of flow angle is about 2%, the relative value of both total pressure and static pressure are less than 3%. These results are better than experimental calibration accuracy in the same situation. In practice, this method is used to replace or guide traditional experimental calibration method, it can save a lot of calibration time and cost, so that seven-hole probe measurement for subsonic compressible flow has become simple and feasible. |
| 查看全文 下载PDF阅读器 |
| 关闭 |
