|Table of Contents|

Investigation on flow and heat transfer of high temperature and high pressure hydrogen in triangular grooves and tubes(PDF)

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

Issue:
2020年06期
Page:
35-44
Research Field:
研究与设计
Publishing date:

Info

Title:
Investigation on flow and heat transfer of high temperature and high pressure hydrogen in triangular grooves and tubes
Author(s):
LIU Lin1; FANG Yuliang2; WU Junmei1; WANG Chenglong2; MA Yuan3; TIAN Wenxi2
(1.State Key Laboratory for Strength and Vibration of Mechanical Structures, Shaanxi Key Laboratory of Environment and Control for Flight Vehicle, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; 2.State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 3.Xi'an Aerospace Propulsion Institute, Xi'an 710100, China)
Keywords:
hydrogen;  flow and heat transfer;  triangular groove;  numerical simulation;  high temperature and high pressure
PACS:
V439+.5
DOI:
-
Abstract:
Under high temperature and high pressure conditions, the flow and heat transfer characteristics of hydrogen in long straight tubes heated by the uniform heat flux and triangular fluted enhanced tubes were studied by the numerical simulation method.The change of thermophysical properties of hydrogen with temperature and pressure was considered in the simulation, and the SST k-ω turbulence model was adopted.The numerical results of this model are in good agreement with the experimental data in the circular channel of related literature.The results show that the flow of hydrogen in the cooling channel is subsonic turbulence, and the wall temperature of the cooling channel gradually increases along the axial direction and then slightly decreases near the outlet.The triangular groove on the inner wall of the circular tube as the turbulator has an obvious effect on enhancing the heat transfer but increasing the flow resistance.Increasing groove depth, decreasing groove spacing and asymmetric triangular groove reduce the overall heat transfer performance.The enhanced heat transfer performance of the inward triangular fluted enhanced tube is better than that of the outward triangular fluted enhanced tube.

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