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首页> 外文期刊>International journal of numerical methods for heat & fluid flow >Conjugated heat transfer analysis of a film cooling passage with different rib configurations
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Conjugated heat transfer analysis of a film cooling passage with different rib configurations

机译：具有不同肋结构的薄膜冷却通道的共轭传热分析

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Purpose - The purpose of this paper is to analyze the effect of thermal conductivity on gas turbine blades, and to investigate the contribution of different rib configurations to the heat flux and the film cooling effectiveness. Design/methodology/approach - The Renormalization Group (RNG) model with enhanced wall treatment was used for the turbulence modeling, and the SIMPLE algorithm was used to handle the pressure-velocity coupling. Findings - A flame-shape distribution on the internal wall provides high heat flux compared to a hawk-shape distribution; the film cooling effectiveness on the external wall is enhanced for the lateral film cooling effectiveness by heat conduction and film cooling (convection); by comparing the square-rib and pin-rib configurations, the circular-rib configuration offers a higher film cooling effectiveness on the Aluminum wall. Research limitations/implications - In the present research, the combination of internal cooling and external cooling is used to predict cooling effectiveness on film-cooled flat plate; two kinds of different plate materials are used to obtain the influence of the thermal conductivity. The successful computational method should give guidelines for potential CFD users in engineering sciences. Practical implications - The results of the paper are of engineering interest where film cooling and ribbed surfaces are applied. The successful computational method will also serve as guidelines for potential users of CFD in design as well as research and development work. Originality/value - In the present research, the combination of internal cooling and external cooling is used to predict cooling effectiveness on film-cooled flat plate; two kinds of different plate materials are used to obtain the influence of the thermal conductivity.
机译：目的-本文的目的是分析热导率对燃气轮机叶片的影响，并研究不同肋结构对热通量和薄膜冷却效率的影响。设计/方法/方法-使用经过增强壁处理的重归一化组（RNG）模型进行湍流建模，并使用SIMPLE算法处理压力-速度耦合。发现-与鹰形分布相比，内壁上的火焰形分布提供更高的热通量；通过热传导和薄膜冷却（对流）提高了外壁上的薄膜冷却效率，从而提高了横向薄膜冷却效率。通过比较方形肋骨和销形肋骨配置，圆形肋骨配置可在铝壁上提供更高的薄膜冷却效率。研究的局限性/意义-在本研究中，内部冷却和外部冷却的组合被用来预测薄膜冷却平板的冷却效果。两种不同的板材用于获得热导率的影响。成功的计算方法应为工程科学中的潜在CFD用户提供指导。实际意义-在应用薄膜冷却和带肋表面的情况下，本文的结果具有工程学意义。成功的计算方法还将作为CFD潜在用户在设计以及研发工作中的指南。独创性/价值-在本研究中，内部冷却和外部冷却的组合用于预测薄膜冷却平板的冷却效果；两种不同的板材用于获得热导率的影响。

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