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| China Academy of Aerospace Aerodynamics, Beijing 10074, China |
| XU Kao,CHEN Lian-zhong,YANG Zhong-kai |
| China Academy of Aerospace Aerodynamics, Beijing 10074, China |
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Abstract Heat flux measurements for three types of calorimeters are compared in the turbulent conduit. The three types of calorimeters are the slug with an insulator(the first type), the heated end brim of slug touching the test article by points (the second type) and 0.4 mm gap between the heated end brim of slug and the test article (the third type) respectively. These calorimeters are uniformly installed on the test article with the length and width of 100 mm ×100 mm to measure the heat flux values. The results show that under low pressures and small heat flux conditions, the measurement values of three types of calorimeters match well; Instead, under high pressures and larger heat flux conditions, the measurement value of the third is the most and that of the second is the lowest; Meantime, as with the decrease of pressures in the turbulent conduit, the measurement values of the third are close to those of the second little by little.
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［4］陈连忠.塞块式瞬态量热计测量结果修正方法的研究［J］.计量学报,2008 29（4）:317-319. |
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2014, Vol. 35 
