不同压力环境下竖直平板表面自然对流散热实验

doi:10.7527/S1000-6893.2015.0252

Abstract

Abstract:

When rising from the ground to space, aircraft will experience substantial changes in environmental parameters, which leads to the emergence of "super-hot", "super-cold" and "thermal stratification" phenomenon of aircraft and airborne equipment. The objective of the present study is to obtain the key parameter-free convection heat transfer coefficient under different environmental pressures. In this study, experiments are carried out under different pressure conditions (0.0001, 0.01,0.1, 0.2, 0.5, 1, 10, 50 kPa and atmospheric pressure) and different constant heat input (75,150, 300 W/m²) to measure the heat transfer of vertical plate. Then convection heat transfer coefficient can be obtained under different conditions by comparing heat loss between radiation and convection. The results indicate that:convection heat transfer coefficient is pretty low when absolute pressure is less than 1 kPa, which can be regarded as zero; when the absolute atmosphere is higher than 1 kPa, square relation is found between increasing convection heat transfer coefficient and increasing pressure; by processing environmental parameters with dimensionless method, the obtained criterion equation can be used between 1 kPa and 100 kPa.

Key words: low pressure, vertical plate, natural convection, radiation, dimensionless

CLC Number:

V416.4
TK124

WANG Jing, DING Li, QIE Dianfu. Experiment on surface natural convection heat transfer of vertical plate under different pressures[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(5): 1506-1511.

References

[1] 曲东才. 飞艇研制及发展[J]. 航空科学与技术, 2006(2):40-41. QU D C. Study and development of airship[J]. Aviation Science and Technology, 2006(2):40-41(in Chinese).
[2] YAO W, LU X C, WANG C, et al. A heat transient model for the thermal behavior prediction of stratospheric airships[J]. Applied Thermal Engineering, 2014, 70(1):380-387.
[3] XIONG J J, BAI J B, CHEN L. Simplified analytical model for predicting the temperature of balloon on high-altitude[J]. International Journal of Thermal Sciences, 2014, 76:82-89.
[4] DE F L, XIN L X, CHUANG S. Experimental investigation of transient thermal behavior of an airship under different solar radiation and airflow conditions[J]. Advances in Space Research, 2014, 53(5):862-869.
[5] 姚伟, 李勇, 王文隽, 等. 平流层飞艇热力学模型和上升过程仿真分析[J]. 宇航学报, 2007, 28(3):603-607. YAO W, LI Y, WANG W J, et al. Thermodynamic model and numerical simulation of a stratospheric airship take-off process[J]. Journal of Astronautics, 2007, 28(3):603-607(in Chinese).
[6] 方贤德, 王伟志, 李小建. 平流层飞艇热仿真初步探讨[J]. 航天返回与遥感, 2007, 28(2):5-9. FANG X D, WANG W Z, LI X J. A study of thermal simulation of stratospheric airships[J]. Spacecraft Recovery & Remote Sensing, 2007, 28(2):5-9(in Chinese).
[7] WANG Y, LIU Y X. Numerical simulation about thermal environment of solar energy airship in stratosphere[C]//2012 International Workshop on Information and Electronics Engineering. Oxford:Elsevier, 2012:1745-1749.
[8] DEVIENNE F M. Low density heat transfer[J]. Advances in Heat Transfer, 1965, 2:271-356.
[9] NELSON K E, BEVANS J T. Errors of the calorimetric method of total emittance measurement:NASA, SP-ZEEE[R]. Washington, D.C.:NASA, 1963.
[10] KYTE J R, MADDEN A J, PIRET E L. Natural-convection heat transfer at reduced pressure[J]. Chemical Engineering Progress, 1953, 49(12):653-662.
[11] HPSSEINI R, TAHERIAN H. Natural convection heat transfer from a vertical plate to air at very low prseeure[J]. Transactions of the Canadian Society for Mechanical Engineering, 2004, 28(2B):309-319.
[12] CHURCHILL S W, CHU H H S. Correlating equations for laminar and turbulent free convection from a vertical plate[J]. International Journal of Heat and Mass Transfer, 1975, 18:1323-1329.
[13] 胡松涛, 朱春, 王东, 等. 低气压条件下电加热器自然对流换热性能测试[J]. 暖通空调, 2006, 36(3):22-24. HU S T, ZHU C, WANG D, et al. Testing of natural convection heat transfer performance of electric heaters under lower air pressure[J]. Heating Ventilating & Air Conditioning, 2006, 36(3):22-24(in Chinese).
[14] MOFFAT R J. Describing the uncertainties in experimentalresults[J]. Experimental Thermal and Fluid Science, 1988, 1(1):3-17.ifferent solar radiation and airflow conditions[J]. Advances in Space Research, 2014, 53:862-869.
[5]Yao W, Li Yong, Wang W J, Zheng W. Thermodynamic Model and Numerical Simulation of a StratosphericAirship Take-off Process[J]. Journal of As-tronautics, 2007, 28(3):603-607. (in Chinese)
姚伟, 李勇,王文隽,郑威. 平流层飞艇热力学模型和上升过程仿真分析[J]. 宇航学报, 2007, 28(3):603-607.
[6]Fang X D, Wang W Z, Li X J. A Study of Thermal Sim-ulation of Stratospheric Airships[J]. Spacecraft Recovery & Remote Sensing, 2007, 28(2):5-9. (in Chinese)
方贤德,王伟志,李小建.平流层飞艇热仿真初步探讨[J]. 航天返回与遥感,2007, 28(2):5-9.
[7]Yiran W, Yunxia L. Numerical Simulation about Thermal Environment of Solar Energy Airship in Stratosphere[J]. Procedia Engineering, 2012, 29:1745-1749.
[8]Hartnett J P, Irivine T F, Devienne F M. Low density heat transfer[M], in “Advances in heat transfer”. 1965, 2:271-356.
[9]Nelson K E, Bevans J T. Errors of the calorimetric method of total emittance measurement. Measurement of thermal radiation properties of solids[R], NASA, SP-ZEEE, 1963, 31:55-65.
[10]Kyte J R, Madden A J, Piret E L. Natural-Convection heat transfer at reduced pressure[J]. Chemical engineer-ing progress, 1953, 49 (12):653-662.
[11]Hosseini Reza, TaherianHessam. Natural convection heat transfer from a vertical plate to air at very low prseeure[C]. Transactions of the canadian society for mechanical engineering, 2004, 28(2B), 309-319.
[12]Churchill S W, Chu H H S. Correlating equations for laminar and turbulent free convection from a vertical plate[J]. Int. J. Heat Mass Transfer, 1975, 18: 1323-1329.
[13]Hu S T, Zhu C, Wang D, Zhang C X. Testing of natural convection heat transfer performance of electric heaters under lower air pressure[J]. HVAC, 2006, 36(3):22-24.
胡松涛, 朱春, 王东, 张长兴. 低气压条件下电加热器自然对流换热性能测试[J]. 暖通空调, 2006, 36(3):22-24.

[1]	Naxi TIAN, Jianan XIE, Hui JIANG, Yu YANG. Characterization of space X-ray reflective focusing system by using synchrotron radiation facility [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(3): 527386-527386.
[2]	Dongjun LIAO, Anhua SHI, Jie HUANG, Hexiang JIAN, Aimin XIE, Zonghao WANG. Validation of dissociation of CO in CO₂ flowfield with flow velocity from 5 to 7 km/s [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(S2): 106-114.
[3]	Jiahong NIU, Haonan JIA, Fajun YI, Zujun PENG, Wei CHEN. Low-pressure thermal stability and high-temperature electrical conductivity of dense amorphous SiCN [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(S2): 152-159.
[4]	YUAN Qingyun, SUN Yongwei, ZHANG Xijun, WANG Pingping. Surface flashover characteristics of kapton in low pressure environment [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(7): 425384-425384.
[5]	LYU Junming, LI Fei, LI Qi, CHENG Xiaoli. Modeling of Martian atmospheric high temperature spectra and prediction of non-equilibrium radiative heating [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(3): 626551-626551.
[6]	SHI Chuang, XIAO Yun, FAN Lei, ZHENG Fu, WANG Cheng, HUANG Zhiyong, LI Zhen. Research progress of radiation pressure modelling for navigation satellites [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(10): 527389-527389.
[7]	SHANG Yong, FENG Yang, LIU Qiaomu, WANG Junwu, YANG Huijun, RU Yi, ZHANG Heng, ZHAO Wenyue, PEI Yanling, LI Shusuo, GONG Shengkai. Research and application of large scientific facility on high-temperature structural materials and coatings of aero-engine [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(10): 527481-527481.
[8]	ZHANG Huabo, ZHOU Ruirui, LI Sida, SUN Yasong. Multiscale steady-state thermal radiation calculation based on gas kinetics method [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(S1): 726411-726411.
[9]	WANG Li'nan, CAI Chuhan, LIU Guosheng, MA Bang, MA Xianjie. Electro-optical countermeasure simulation of fighter terminal based on effectiveness evaluation [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(8): 525834-525834.
[10]	YANG Zongyao, ZHANG Jingzhou, SHAN Yong. Effects of slot-inlet arrangement at infrared-suppressor-integrated rear airframe on flow organization and infrared radiation characteristics [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(7): 124445-124445.
[11]	LI Guanxiong, WANG Jingyu, WANG Yuntao. Parametric study on buoyancy-lifting aerial vehicle with low pressure energy storage method [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(7): 224438-224438.
[12]	LI Yanqing, XUAN Yimin. Coupling analysis method for helicopter thermal management and infrared radiation characteristics [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(3): 124270-124270.
[13]	LIANG Fei, XIAO Yingchun, LU Nan, ZHU Feng. Characteristics analysis of electromagnetic emission on VOR caused by neutral section arcs [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(8): 323705-323705.
[14]	JIANG Kunhong, ZHANG Jingzhou, SHAN Yong, ZHENG Zhen, YANG Zongyao. Effects of sheltering and outlet shaping on surface temperature and infrared radiation characteristics of rear airframe with an integrating infrared suppressor [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(2): 123497-123497.
[15]	YANG Chunling, ZHANG Zhendong, ZHANG Tongyiyu. Infrared decoy modeling method based on enhanced discrete phase model and chemical combustion [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(12): 123682-123682.

Experiment on surface natural convection heat transfer of vertical plate under different pressures

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments