Spatial Resolution Correction for Electrochemical Wall-shear Stress Measurements using Rectangular Sensors
سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 150
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شناسه ملی سند علمی:
JR_JAFM-9-3_029
تاریخ نمایه سازی: 3 بهمن 1400
چکیده مقاله:
This article is mainly motivated by the growing needs for highly resolved measurements for wall-bounded turbulent flows and aims to proposes a spatial correction coefficient in order to increase the wall-shear stress sensors accuracy. As it well known for the hot wire anemometry, the fluctuating streamwise velocity measurement attenuation is mainly due to the spatial resolution and the frequency response of the sensing element. The present work agrees well with this conclusion and expands it to the wall-shear stress fluctuations measurements using electrochemical sensors and suggested a correction method based on the spanwise correlation coefficient to take into account the spatial filtering effects on unresolved wall-shear stress measurements due to too large sensor spanwise size.
کلیدواژه ها:
نویسندگان
F. Fadla
Laboratory of Fluid Mechanics, EMP, BP ۱۷ Bordj El Bahri, Alger, Algerie
R. Chovet
LAMIH CNRS UMR ۸۲۰۱, UVHC, Univ. Lille Nord de France, F-۵۹۳۱۳, Valenciennes, France
D. Cornu
LAMIH CNRS UMR ۸۲۰۱, UVHC, Univ. Lille Nord de France, F-۵۹۳۱۳, Valenciennes, France
M. Lippert
LAMIH CNRS UMR ۸۲۰۱, UVHC, Univ. Lille Nord de France, F-۵۹۳۱۳, Valenciennes, France
Fethi Aloui
Polytechnic University Hauts-de-France of Valenciennes, LAMIH UMR CNRS ۸۲۰۱, France
L. Keirsbulck
LAMIH CNRS UMR ۸۲۰۱, UVHC, Univ. Lille Nord de France, F-۵۹۳۱۳, Valenciennes, France