Analysis on Influence of Gravity on Convection Heat Transfer in Manned Spacecraft during Terrestrial Test

Authors: Wang Jing, Tao Tao, Li Xiyuan, Pei Yifei

Abstract:

How to simulate experimentally the air flow and heat transfer under microgravity on the ground is important, which has not been completely solved so far. Influence of gravity on air natural convection results in convection heat transfer on ground difference from that on orbit. In order to obtain air temperature and velocity deviations of manned spacecraft during terrestrial thermal test, dimensionless number analysis and numerical simulation analysis are performed. The calculated temperature distribution and velocity distribution of the horizontal test cases are compared to the vertical cases. The results show that the influence of gravity is neglected for facility drawer racks and more obvious for vertical cabins.

Keywords: Gravity, Convection heat transfer, Manned spacecraft, Dimensionless number, Numerical simulation

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1081759

References:

[1] Huang Ben-cheng, Ma You-li. "Space Environment Test Technology of Spacecraft," Beijing: National Defence Industry Press, 2002.1.
[2] Hakan F. Oztop, Ihsan Dagtekin. "Mixed Convection in Two-sided Lid-driven Differentially Heated Square Cavity," International Journal of Heat and Mass Transfer, 47, 2004: 1761-1769.
[3] Michael J. Putten, Maurice H. Putten, Anton F. Putten. "Thermal Flow Measurements at Gr/Re2>>1 by Silicon Anemometry," IEEE Transactions on Instrumentation and Measurement, 1999, 48(3):724- 729
[4] H.A. Mohammed, Y.K. Salman. "Experimental Investigation of Mixed Convection Heat Transfer for Thermally Developing Flow in a Horizontal Circular Cylinder," Applied Thermal Engineering 27, 2007, 1522-1533.
[5] Y.S. Tian, T.G. Karayiannis. "Low Turbulence Natural Convection in An Air Filled Square Cavity Part I: The Thermal and Fluid Flow Fields," International Journal of Heat and Mass Transfer, 43, 2000: 849-866.
[6] Y.S. Tian, T.G. Karayiannis. "Low Turbulence Natural Convection in An Air Filled Square Cavity Part II: The Turbulence Quantities," International Journal of Heat and Mass Transfer, 43, 2000: 867-884.
[7] Zhang Xue-xue, Liu Jing, Meng Yi. "Ground Test Simulating of Air Heat Convection in Manned Space Capsule," Journal of Tsinghua University (Science and Technology), 1999, 39 (6): 67-70.
[8] Liang Xin-gang, Guo Zeng-yuan, Liu Yun-long, et al. "Ground-based Technology for Simulation of Ventilative Heat Transfer in Micro-gravity," Science in China, Ser. A, 1997, 27 (11): 1010-1013.
[9] Huang Jia-rong. "The Suppression of Natural Convection Using Pressure-reducing Method in Vacuum Thermal Balance Test Of Manned Spacecraft," Space Environment Engineering, 2004, 21(1):37-43.
[10] Zhao Rui, Cheng Wen-long, Liu Qi-nie, et al. "Study on Criterion of Critical Pressure in Spacecrafts Using Lowering Pressure Method," Journal of Astronautics, 2010, 31(2):598-601.
[11] A. A. M. Delil. "Thermal-Gravitational Modeling and Scaling of Heat Transport Systems for Applications in Different Gravity Environments: Super-Gravity Levels & Oscillating Heat Transfer Devices," NLR-TP- 2000-213, 2000.
[12] Tian Wen-hua. "Similitude Theory and Experimental Investigation in Thermal Scale Model of Spacecraft," AIAA-80-1534.
[13] Zhong Qi, Liu Qiang. "A Numerical Investigation on Heat Transfer and flow in a pressured cabin of spacecraft," Journal of Astronautics, 2002, 23(5):44-48.
[14] Xu Xiao-ping, Zhong Qi, Fan Han-lin, Li Jin-dong. "Integrated Flow heat and mass transfer analysis in large spacecraft," Chinese Journal of Space Science, 2004, 24(4):295-301.
[15] Yang Shi-ming, Tao Wen-quan. "Heat Transfer 4th Edition," Higher Education Press, Beijing, 2006.8.