C conjugate heat transfer simulation of swirl internal cooling on blade leading edge

IF 0.7 4区工程技术 Q4 ENGINEERING, AEROSPACE

International Journal of Turbo & Jet-Engines Pub Date : 2023-11-29 DOI:10.1515/tjj-2023-0051

Yuting Jiang, Haosu Zhang, Kang Huang, Biao Liu, Yibin Tan, Hai Yu

引用次数: 0

Abstract

Abstract Swirl cooling can not only increase the area of the heat exchange wall covered by the coolant, but also improve the average heat transfer intensity and uniformity of the target surface. SST k-ω turbulence model is utilized in the conjugate heat transfer numerical simulation. Based on C3X blades, leading edge swirl cooling structure of the corresponding areas are modified. The flow and heat transfer characteristics of swirl cooling are analyzed at different cross-sections and positions. It is found that there exists an optimal aspect ratio and hole spacing to minimize the temperature gradient on the swirl cavity wall. The swirling motion in the swirl cavity can significantly increase the heat transfer coefficient of the wall surface.

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叶片前缘漩涡内冷却的 C 共轭传热模拟

摘要涡流冷却不仅能增加冷却剂覆盖的热交换壁面积，还能提高目标表面的平均传热强度和均匀性。共轭传热数值模拟采用了 SST k-ω 湍流模型。在 C3X 叶片的基础上，对相应区域的前缘漩涡冷却结构进行了修改。分析了不同截面和位置下漩涡冷却的流动和传热特性。结果发现，存在一个最佳的长径比和孔距，可以使漩涡腔壁的温度梯度最小。漩涡腔中的漩涡运动可显著提高腔壁表面的传热系数。

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 Turbo & Jet-Engines 工程技术-工程：宇航

CiteScore

1.90

自引率

11.10%

发文量

审稿时长

6 months

期刊介绍： The Main aim and scope of this Journal is to help improve each separate components R&D and superimpose separated results to get integrated systems by striving to reach the overall advanced design and benefits by integrating: (a) Physics, Aero, and Stealth Thermodynamics in simulations by flying unmanned or manned prototypes supported by integrated Computer Simulations based on: (b) Component R&D of: (i) Turbo and Jet-Engines, (ii) Airframe, (iii) Helmet-Aiming-Systems and Ammunition based on: (c) Anticipated New Programs Missions based on (d) IMPROVED RELIABILITY, DURABILITY, ECONOMICS, TACTICS, STRATEGIES and EDUCATION in both the civil and military domains of Turbo and Jet Engines. The　International Journal of Turbo & Jet Engines　is devoted to cutting edge research in theory and design of propagation of jet aircraft. It serves as an international publication organ for new ideas, insights and results from industry and academic research on thermodynamics, combustion, behavior of related materials at high temperatures, turbine and engine design, thrust vectoring and flight control as well as energy and environmental issues.