|Table of Contents|

Effect of hyper-gravity on heat transfer of supercritical n-decane flowing in horizontal circular tube(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2021年05期
Page:
78-84
Research Field:
研究与设计
Publishing date:

Info

Title:
Effect of hyper-gravity on heat transfer of supercritical n-decane flowing in horizontal circular tube
Author(s):
WANG Yanhong; LU Yingnan; LI Haoran; LIU Hao
(School of Energy and Power Engineering,Northeast Electric Power University,Jilin 132012,China)
Keywords:
hyper-gravity supercritical heat flux distribution abnormal temperature stratification secondary flow numerical analysis
PACS:
V231.1
DOI:
-
Abstract:
In order to deeply understand the thermal management problem in aircraft engines under hyper-gravity conditions,a numerical investigation on supercritical heat transfer of n-decane in the horizontal channel has been conducted. The heat transfer mechanism of pseudo-film layer was explored. The heat conduction process,secondary flow characteristic and its effect on non-uniform deteriorated heat transfer along the circumferential direction of tube were investigated. A prediction model of circumferential maximum heat transfer difference was proposed. A buoyancy criterion for horizontal tubes was established. The research results indicate that the abnormal density stratification in the fluid domain is enhanced,the circumferential unbalanced kinetic energy is increased,and the secondary flow is strengthened with the increasing gravity acceleration. The abnormal temperature stratification in the solid domain is also aggravated,which enhances the circumferential distribution of heat flux. Increasing the pressure makes the weaker fluid density variation,which can restrain the influence of hyper-gravity on the heat transfer process.

References:

[1] YAN J G,LIU S C,GUO P C,et al.Experimental investigation on convection heat transfer of supercritical hydrocarbon fuel in a long mini tube[J].Experimental Thermal and Fluid Science,2020,115:110100. [2] PU H,LI S F,DONG M,et al.Convective heat transfer and flow resistance characteristics of supercritical pressure hydrocarbon fuel in a horizontal rectangular mini-channel[J].Experimental Thermal and Fluid Science,2019,108:39-53. [3] ZHU J Q,ZHAO C F,CHENG Z Y,et al.Experimental investigation on heat transfer of n-decane in a vertical square tube under supercritical pressure[J].International Journal of Heat and Mass Transfer,2019,138:631-639. [4] ZHANG C B,XU G Q,GAO L,et al.Experimental investigation on heat transfer of a specific fuel(RP-3)flows through downward tubes at supercritical pressure[J].The Journal of Supercritical Fluids,2012,72:90-99. [5] DANG G X,ZHONG F Q,ZHANG Y J,et al.Numerical study of heat transfer deterioration of turbulent supercritical kerosene flow in heated circular tube[J].International Journal of Heat and Mass Transfer,2015,85:1003-1011. [6] HUA Y X,WANG Y Z,MENG H.A numerical study of supercritical forced convective heat transfer of n-heptane inside a horizontal miniature tube[J].The Journal of Supercritical Fluids,2010,52(1):36-46. [7] PU H,LI S F,JIAO S,et al.Numerical investigation on convective heat transfer to aviation kerosene flowing in vertical tubes at supercritical pressures[J].International Journal of Heat and Mass Transfer,2018,118:857-871. [8] LIU B,ZHU Y H,YAN J J,et al.Experimental investigation of convection heat transfer of n-decane at supercritical pressures in small vertical tubes[J].International Journal of Heat and Mass Transfer,2015,91:734-746. [9] ZHANG J Z,LIN J P,HUANG D,et al.Numerical study of heat transfer characteristics of downward supercritical kerosene flow inside circular tubes[J].Journal of Zhejiang University-Science A,2018,19(2):158-170. [10] LIU Z H,BI Q C,GUO Y,et al.Convective heat transfer and pressure drop characteristics of near-critical-pressure hydrocarbon fuel in a minichannel[J].Applied Thermal Engineering,2013,51(1/2):1047-1054. [11] WEN J,HUANG H R,JIA Z X,et al.Buoyancy effects on heat transfer to supercritical pressure hydrocarbon fuel in a horizontal miniature tube[J].International Journal of Heat and Mass Transfer,2017,115:1173-1181. [12] SUN X,XU K K,MENG H,et al.Buoyancy effects on supercritical-pressure conjugate heat transfer of aviation kerosene in horizontal tubes[J].The Journal of Supercritical Fluids,2018,139:105-113. [13] WANG Y H,LU Y N,LI S F,et al.Numerical study on non-uniform heat transfer deterioration of supercritical RP-3 aviation kerosene in a horizontal tube[J].Chinese Journal of Chemical Engineering,2020,28:1542-1557. [14] CHENG Z Y,TAO Z,ZHU J Q,et al.Diameter effect on the heat transfer of supercritical hydrocarbon fuel in horizontal tubes under turbulent conditions[J].Applied Thermal Engineering,2018,134:39-53. [15] HU J Y,ZHOU J,WANG N,et al.Numerical study of buoyancys effect on flow and heat transfer of kerosene in a tiny horizontal square tube at supercritical pressure[J].Applied Thermal Engineering,2018,141:1070-1079. [16] SUN X,MENG H,ZHENG Y.Asymmetric heating and buoyancy effects on heat transfer of hydrocarbon fuel in a horizontal square channel at supercritical pressures[J].Aerospace Science and Technology,2019,93:105358. [17] FU Y C,WEN J,TAO Z,et al.Experimental research on convective heat transfer of supercritical hydrocarbon fuel flowing through U-turn tubes[J].Applied Thermal Engineering,2017,116:43-55. [18] WEN J,HUANG H R,FU Y C,et al.Heat transfer performance of aviation kerosene RP-3 flowing in a verticalhelical tube at supercritical pressure[J].Applied Thermal Engineering,2017,121:853-862. [19] LYU L L,WEN J,FU Y C,et al.Numerical investigation on convective heat transfer of supercritical aviation kerosene in a horizontal tube under hyper gravity conditions[J].Aerospace Science and Technology,2020,105:105962. [20] CHEN Y Q,LI Y,LIU D C,et al.Influences of accelerating states on supercritical n-decane heat transfer in a horizontal tube applied for scramjet engine cooling[J].Aerospace Science and Technology,2021,109:106424. [21] WANG Y H,LI S F,DONG M. Numerical study on heat transfer deterioration of supercritical n-decane in horizontal circular tubes[J].Energies,2014,7(11):7535-7554. [22] SONG K W,HU W L,LIU S,et al.Quantitative relationship between secondary flow intensity and heat transfer intensity in flat-tube-and-fin air heat exchanger with vortex generators[J].Applied Thermal Engineering,2016,103:1064-1070.

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