Research on heat flux calculation and correction methods of the slug calorimeter

ZHU Xinxin; WANG Hui; YANG Kai; ZHU Tao; YANG Qingtao; LIU Jinbo

doi:10.11729/syltlx20190134

Volume 34 Issue 5

Oct. 2020

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Journal of Experiments in Fluid Mechanics > 2020 > 34(5): 97-102, 108. > DOI: 10.11729/syltlx20190134

ZHU Xinxin, WANG Hui, YANG Kai, ZHU Tao, YANG Qingtao, LIU Jinbo. Research on heat flux calculation and correction methods of the slug calorimeter[J]. Journal of Experiments in Fluid Mechanics, 2020, 34(5): 97-102, 108. DOI: 10.11729/syltlx20190134

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Research on heat flux calculation and correction methods of the slug calorimeter

Hypervelocity Aerodynamics Institute of China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China

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Received Date: October 21, 2019
Revised Date: December 28, 2019

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Abstract

Abstract

Heat flux calculation and correction methods of slug calorimeter were studied in order to reduce measurement error of heat flux. Based on the energy conservation principle and the heat transfer theory, the heat transfer model and calculation method of slug calorimeter with insulating sleeve were built. By analyzing the simulation model of slug calorimeter, the method of extracting the temperature rise rate and the main factors affecting the calculation error were given. Finally the direct comparison calibration correction method and the numerical calculation correction method based on heat flux calibration were proposed. The simulation and test results show that the two methods can greatly reduce the heat flux measurement error. The measurement error of the direct comparison calibration correction method is relatively smaller but the method requires that the heat flux calibration system can cover the heat flux measurement range. While the numerical calculation correction method based on heat flux calibration has lower requirement on the heat flux calibration system and thus has a wilder application field.
- heat flux measurement,
- slug calorimeter,
- heat flux calibration,
- correction method

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