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research-article

A NEW TRANSIENT HIGH HEAT FLUX CONVECTION CALIBRATION FACILITY FOR HEAT TRANSFER GAUGES IN HIGH ENTHALPY FLOWS

[+] Author and Article Information
Roderick Lubbock

Osney Thermo-Fluids Laboratory, Dept. of Engineering Science, University of Oxford, UK
kebl3134@gmail.com

Salvador Luque

Osney Thermo-Fluids Laboratory, Dept. of Engineering Science, University of Oxford, UK
salvador.luque@imdea.org

Budimir Rosic

Osney Thermo-Fluids Laboratory, Dept. of Engineering Science, University of Oxford, UK
budimir.rosic@eng.ox.ac.uk

1Corresponding author.

ASME doi:10.1115/1.4038339 History: Received December 27, 2015; Revised August 31, 2017

Abstract

This paper presents a novel transient method for calibrating heat transfer gauges for convective wall heat flux measurements in high enthalpy flows. Previously only steady-state methods have been considered. These require cooling, which adds complexity and expense to the experimental design. The new method is simple, inexpensive, easy to adapt for different flow configurations and sensor geometries and quick to run across a wide range of conditions. The theory of the convection sensitivity of circular foil gauges is summarised as a basis for the design of the new calibration facility. The experimental design, method and data processing techniques are then presented along with some preliminary experimental results.

Copyright (c) 2017 by ASME
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