کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4963859 | 1447412 | 2017 | 38 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
3D dimensionally reduced modeling and gradient-based optimization of microchannel cooling networks
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
This paper presents a dimensionally reduced thermal model and gradient-based shape optimization scheme for the 3D computational design of actively cooled panels. A correction method previously used in wire-based electromagnetics is applied to address convergence issues associated with the singularity of the thermal solution along the microchannels. The numerical solution is obtained with the interface-enriched generalized finite element method (IGFEM), which greatly simplifies mesh generation by allowing for the use of a non-conforming mesh to capture the temperature gradient discontinuity across the microchannels. The temperature distribution calculated with the IGFEM on coarse meshes agrees with that obtained using significantly more complex and costly ANSYS FLUENT simulations. We then combine the IGFEM with a sensitivity analysis and the sequential quadratic programming algorithm in MATLAB to solve two sets of shape optimization problems related to actively cooled microvascular composite panels. These problems demonstrate a key advantage of the IGFEM in avoiding severe mesh distortion during shape optimization. Lastly, we present a semi-analytical model based on the concept of the zone of influence of a channel to estimate the maximum temperature of an actively cooled plate with straight embedded microchannels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 323, 15 August 2017, Pages 230-249
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 323, 15 August 2017, Pages 230-249
نویسندگان
Marcus Hwai Yik Tan, Philippe H. Geubelle,