底层隔板法壁面剪应力测量技术研究与发展

马骋宇; 马炳和; 邓进军; 周梓桐; 张晗

doi:10.11729/syltlx20170010

底层隔板法壁面剪应力测量技术研究与发展

doi: 10.11729/syltlx20170010

西北工业大学空天微纳系统教育部重点实验室, 西安 710072

基金项目:

国家重点基础研究发展计划 2015CB057400

国家重大科学仪器设备开发专项 2013YQ040911

详细信息

作者简介:
马骋宇 (1988-), 男, 陕西西安人, 博士研究生。研究方向:MEMS集成设计与制造、高焓流场摩阻测试微系统。通信地址:西北工业大学空天微纳系统教育部重点实验室 (710072)。E-mail:macy@mail.nwpu.edu.cn

通讯作者:
马炳和, E-mail: mabh@nwpu.edu.cn

中图分类号: TP212.9
计量
- 文章访问数: 256
- HTML全文浏览量: 140
- PDF下载量: 19
- 被引次数: 0
出版历程
- 收稿日期: 2016-12-13
- 修回日期: 2017-02-27
- 刊出日期: 2017-04-25

Sublayer fence for wall shear stress measurement

Key Laboratory of Micro/Nano Systems for Aerospace, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 介绍了机械式底层隔板测量流体壁面剪应力的基本原理。重点阐述了基于微机电系统（MEMS）的微型底层隔板的集成化结构及其工作原理，介绍了其研究发展及测试应用情况。最后，简要分析了常规剪应力微传感器在高温测试方面的弊端，并结合已有高温摩阻测试研究，提出了未来壁面剪应力测量技术的发展方向。
- 壁面剪应力 /
- 摩擦阻力 /
- 底层隔板 /
- 微机电系统 /
- 边界层
Abstract: This paper is a review of the sublayer fence for wall shear stress measurements in the turbulent boundary layer. A summary is presented of the main techniques for determining the skin friction that makes the sublayer-fence gauge an attractive approach for use in such environments. The directional surface-fence gauge for three-dimensional turbulent boundary layer measurements is also introduced. The micro sublayer fence utilizing Micro Electro-Mechanical Systems (MEMS) technology is a promising approach, and many concepts have been proposed. Finally, challenges faced in the development of process techniques are also outlined.
- wall shear stress /
- skin friction /
- sublayer fence /
- MEMS /
- boundary layer

HTML全文

图 1 机械式底层隔板结构及工作原理图

Figure 1. Schematics diagram of the structure of the conventional sublayer fence and its working principle

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图 2 (a) 方向灵敏度标定曲线 (b) 剪应力方向标定曲线

Figure 2. (a) Directional sensitivities of individual fence elements. (b) Directional calibration of the surface-fence gage

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图 3 底层隔板嵌装在模型壁面示意图

Figure 3. Sublayer fence mounting on the wall of model

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图 4 2002年Papen研制的MEMS底层隔板

Figure 4. Photographs of the fabricated micro fence probe by Papen

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图 5 传感器剪应力标定曲线

Figure 5. Output signal of the sensors as a function of wall shear stress

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图 6 纵坐标为隔板和来流呈φ角度时传感器所测剪应力与隔板和来流垂直时传感器所测剪应力的比值，横坐标是隔板与来流的角度φ

Figure 6. Output signal as a function of the angle between the direction of the wall shear stress and the direction perpendicular to the fence

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图 7 Schober于2004年提出的微底层隔板

Figure 7. Sensitivity enhanced by introducing a slot at the base of the fence

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图 8 2006年提出的微底层隔板及其封装结构

Figure 8. MEMS surface fence proposed by Schiffer and its package structure

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图 9 两种测量手段得到的摩擦系数、均方根摩擦系数、反流因数对比

Figure 9. Comparison of wall-pulsed wire and micro fence behind an obstacle. (Top: C_f, middle: C′ _f, bottom: x_w)

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图 10 MEMS底层隔板安装于涡流发生装置的工作示意图

Figure 10. A length-wise cross-section of the measurement section of the vortex cell. The test location at the bottom of the cell, where the MEMS fence is mounted. The mixing layer formed over a 40°sector of the circumference by separation at the leading cusp

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图 11 (a) 沿测点径向的速度型；(b) MEMS底层隔板测得的湍流剪应力值

Figure 11. (a) LDA profiles of mean circumferential velocity. (b) Turbulent shear stress

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图 12 双底层隔板流场仿真模型及其关系示意图

Figure 12. The modeling solution of MEMS dual-fences gauge

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图 13 双底层隔板流场仿真模型及其关系示意图

Figure 13. The modeling solution of MEMS dual-fences gauge

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图 14 暂冲式风洞结构示意图

Figure 14. Schematic diagram of the blowdown wind tunnel

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图 15 美国空军实验室联合弗吉尼亚理工大学研制的高温摩阻太平

Figure 15. Core structure of the high temperature friction balance

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