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Micromachined Flow Sensors

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: closed (1 September 2019) | Viewed by 4045

Special Issue Editors


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Guest Editor
Integrated Devices and Systems (IDS), University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
Interests: mechanical microsensors; electronic interfacing of sensors; sensor packaging; force sensors; flow sensors; inertial sensors
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
1. Integrated Devices and Systems (IDS), University of Twente, 7500 AE Enschede, The Netherlands
2. Bronkhorst High-Tech BV, Nijverheidsstraat 1A, 7261 AK Ruurlo, The Netherlands
Interests: design, modeling, fabrication and application of microfluidic handling systems; MEMS thermal and Coriolis flow sensors and controllers; MEMS pressure sensors; MEMS control valves; micromachined flow analysis systems; multiparameter flow measurement systems; micro Wobbe index meters
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Since the publication of the first micromachined flow sensors in the 1970s, there has been a tremendous development. Whereas the first sensors were mostly based on thermal sensing principles, we now see a large range of different operating principles: Thermal, anemometric, calorimetric, time-of-flight, measuring pressure drop along a channel or over an orifice, measuring drag force at a channel wall or on an obstacle in the flow, and, more recently, also sensors based on Coriolis forces and ultrasonic measurements. Combining different sensor principles on a single chip allows the measurement of fluid parameters, such as density and viscosity. With increasingly smaller flow levels, the characterization and calibration of sensors also becomes a challenge.

This Special Issue covers the recent advances in all aspects of micro flow sensor research, including design and fabrication of the sensor chips, physical working principles, modeling and simulation, and the measurement setups for their characterization and calibration.

Dr. Remco Wiegerink
Prof. Dr. Joost Lötters
Guest Editors

Manuscript Submission Information

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Keywords

  • Flow sensors
  • Fluid parameter sensors
  • Flow sensor characterization and calibration
  • Measurement of extremely small flows

Published Papers (1 paper)

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Research

10 pages, 6429 KiB  
Article
Accurate Measurements of Wall Shear Stress on a Plate with Elliptic Leading Edge
by Guang-Hui Ding, Bing-He Ma, Jin-Jun Deng, Wei-Zheng Yuan and Kang Liu
Sensors 2018, 18(8), 2682; https://doi.org/10.3390/s18082682 - 15 Aug 2018
Cited by 9 | Viewed by 3335
Abstract
A micro-floating element wall shear stress sensor with backside connections has been developed for accurate measurements of wall shear stress under the turbulent boundary layer. The micro-sensor was designed and fabricated on a 10.16 cm SOI (Silicon on Insulator) wafer by MEMS (Micro-Electro-Mechanical [...] Read more.
A micro-floating element wall shear stress sensor with backside connections has been developed for accurate measurements of wall shear stress under the turbulent boundary layer. The micro-sensor was designed and fabricated on a 10.16 cm SOI (Silicon on Insulator) wafer by MEMS (Micro-Electro-Mechanical System) processing technology. Then, it was calibrated by a wind tunnel setup over a range of 0 Pa to 65 Pa. The measurements of wall shear stress on a smooth plate were carried out in a 0.6 m × 0.6 m transonic wind tunnel. Flow speed ranges from 0.4 Ma to 0.8 Ma, with a corresponding Reynold number of 1.05 × 106~1.55 × 106 at the micro-sensor location. Wall shear stress measured by the micro-sensor has a range of about 34 Pa to 93 Pa, which is consistent with theoretical values. For comparisons, a Preston tube was also used to measure wall shear stress at the same time. The results show that wall shear stress obtained by three methods (the micro-sensor, a Preston tube, and theoretical results) are well agreed with each other. Full article
(This article belongs to the Special Issue Micromachined Flow Sensors)
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