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    Multi-Objective Optimization of Convective Heat Transfer for a Composite Internal and Film Cooling Structure

    Source: ASME Journal of Heat and Mass Transfer:;2022:;volume( 145 ):;issue: 003::page 31802-1
    Author:
    Zhang, Guohua
    ,
    Zhu, Huaitao
    ,
    Xie, Gongnan
    ,
    Sundén, Bengt
    DOI: 10.1115/1.4055676
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper conducted a multi-objective optimization work for a composite internal and film cooling structure. The pitch-to-height ratio of the ribs, the inclination angle of the ribs, and the inclination angle of the film hole are chosen as the three design variables to enhance the heat transfer performance, improve the film cooling effectiveness and reduce the pressure loss of the internal channel flow. During the optimization process, the Latin hypercube sampling method is adopted to select 26 sample points from the design space. The response values with higher fidelity at the sample points are calculated using computational fluid dynamics (CFD) simulations. Among the 26 sample points, 21 are used to construct a surrogate model of each objective function while the rest of them are adopted to validate the correctness of the established surrogate model. By combining the Kriging surrogate model with a nondominated sorting genetic algorithm, the Pareto optimal front is obtained after the optimization process. Finally, comparison and analysis are conducted with respect to the cooling performance and mechanisms between the reference model and the selected three representative optimized models. Results show that the optimized three models can not only improve the film cooling effectiveness but also reduce the pressure loss of the channel flow and enhance the heat transfer. In addition, it is found that the optimized model induces an anticlockwise rotating vortex, which entrains more coolant near the target surface. The inclined ribs of the optimized models induce a secondary flow along the inclined ribs, which enhances the flow mixing and augments the heat transfer performance.
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      Multi-Objective Optimization of Convective Heat Transfer for a Composite Internal and Film Cooling Structure

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4294357
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    contributor authorZhang, Guohua
    contributor authorZhu, Huaitao
    contributor authorXie, Gongnan
    contributor authorSundén, Bengt
    date accessioned2023-11-29T18:44:21Z
    date available2023-11-29T18:44:21Z
    date copyright12/9/2022 12:00:00 AM
    date issued12/9/2022 12:00:00 AM
    date issued2022-12-09
    identifier issn2832-8450
    identifier otherht_145_03_031802.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4294357
    description abstractThis paper conducted a multi-objective optimization work for a composite internal and film cooling structure. The pitch-to-height ratio of the ribs, the inclination angle of the ribs, and the inclination angle of the film hole are chosen as the three design variables to enhance the heat transfer performance, improve the film cooling effectiveness and reduce the pressure loss of the internal channel flow. During the optimization process, the Latin hypercube sampling method is adopted to select 26 sample points from the design space. The response values with higher fidelity at the sample points are calculated using computational fluid dynamics (CFD) simulations. Among the 26 sample points, 21 are used to construct a surrogate model of each objective function while the rest of them are adopted to validate the correctness of the established surrogate model. By combining the Kriging surrogate model with a nondominated sorting genetic algorithm, the Pareto optimal front is obtained after the optimization process. Finally, comparison and analysis are conducted with respect to the cooling performance and mechanisms between the reference model and the selected three representative optimized models. Results show that the optimized three models can not only improve the film cooling effectiveness but also reduce the pressure loss of the channel flow and enhance the heat transfer. In addition, it is found that the optimized model induces an anticlockwise rotating vortex, which entrains more coolant near the target surface. The inclined ribs of the optimized models induce a secondary flow along the inclined ribs, which enhances the flow mixing and augments the heat transfer performance.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleMulti-Objective Optimization of Convective Heat Transfer for a Composite Internal and Film Cooling Structure
    typeJournal Paper
    journal volume145
    journal issue3
    journal titleASME Journal of Heat and Mass Transfer
    identifier doi10.1115/1.4055676
    journal fristpage31802-1
    journal lastpage31802-13
    page13
    treeASME Journal of Heat and Mass Transfer:;2022:;volume( 145 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian