Affiliation:
1. Mechanical Engineering Department, University of Nebraska-Lincoln, Lincoln, NE 68588-0656
Abstract
Surface-mounted heated films have been used for fluid-flow measurement for many years. Recently unsteady heating of such surface films has been explored experimentally. In this paper steady-periodic heating of a surface-mounted film is studied analytically. Wall effects and axial heat conduction in the fluid are included. The temperature is found as an exact integral expression constructed from separate Green’s function formulations in the fluid flow and in the solid wall that are matched at the fluid-solid interface. Results for temperature, obtained by quadrature, are reported for several flow speeds and several steady-periodic frequencies. The results show that steady-periodic heating has potential for shear-stress measurement because the heating frequency may be tuned to maximize the temperature response at the shear stress of interest. Thermal calibration of these sensors is discussed, and simulated calibration curves are given.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference38 articles.
1. Ludwieg, H.
, 1950, “Instrument for Measuring the Wall Shearing Stress of Turbulent Boundary Layers,” NACA Report No. TN 1284.
2. Quantitative Infrared Thermography for Wall Shear Stress Measurement in Laminar Flow;Mayer;Int. J. Heat Mass Transfer
3. Turbine Blade Flow Separation and Reattachment at Low Reynolds Number;Baughn;ASME J. Heat Transfer
4. Heat/Mass Transfer From Surface Films to Shear Flows at Arbitrary Peclet Numbers;Stone;Phys. Fluids A
5. Heat and Mass Transfer From a Film Into Steady Shear Flow;Phillips;Q. J. Mech. Appl. Math.
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