Ribbed channel-based enhancement in the thermal-structural design of the hydrogen rocket engine's chamber

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-05-15 DOI:10.1016/j.ijhydene.2025.05.136

Hisham Elmouazen , Xiaobing Zhang , Mohammednour Gibreel , Mozdalifah Ali

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Abstract

This study numerically investigates the effects of V-shaped ribs with rectangular and pentagonal cross-sections to enhance convective heat transfer of the cooling channel in the YF-75 rocket engine. Using ANSYS Fluent for fluid domain analysis and Finite Element Analysis (FEA) for solid domain analysis, the research evaluates the thermo-structural performance of the V-shaped ribbed channel at Reynolds number 58,800. Six cases are examined, taking into account the effects of the ribs' cross-sections (rectangular and pentagonal), rib blockage ratio (10 %), and different chamfering angles (5°, 15°, 25°, 35°, 45°) on the heat transfer distribution and flow characteristics.

The study findings revealed that V-shaped ribbed channels improved convective heat transfer and reduced thermal stratification despite a minor rise in pressure. The rectangular V-rib improved the performance of the conventional design by 52 %. Furthermore, the Von Mises stress optimized inversely with the chamfering angle of the pentagonal rib. The rectangular V-rib reduced equivalent strain by 63 % and 18.5 % compared to smooth and pentagonal ribbed channels, respectively, thereby improving the strength of the YF-75 cooling channel.

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基于肋形通道的氢火箭发动机燃烧室热结构设计增强

本文对YF-75火箭发动机冷却通道中矩形截面和五边形截面的v形肋对增强对流换热的影响进行了数值研究。采用ANSYS Fluent进行流域分析，采用有限元分析（FEA）进行固域分析，对雷诺数为58,800时v形肋形通道的热结构性能进行了评价。考虑肋截面（矩形和五边形）、肋堵塞率（10%）和不同倒角（5°、15°、25°、35°、45°）对传热分布和流动特性的影响，研究了6种情况。研究结果表明，v形肋形通道改善了对流换热，减少了热分层，尽管压力略有上升。矩形v形肋比传统设计的性能提高了52%。此外，Von Mises应力的优化与五边形肋的倒角成反比。矩形v形肋相对于光滑肋和五边形肋分别减少了63%和18.5%的等效应变，从而提高了YF-75冷却通道的强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.