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Transient nonlinear heat transfer analysis using a generic grid refinement for structure parameter variations

Journal Article


Abstract


  • Traditional finite element models are usually established based on specific structures to address the transient nonlinear heat transfer analysis; however, if the structure parameters change one has to reanalyze/rebuild the finite element models, resulting in a lot of additional computational cost. To address this problem, this work develops a generic grid refinement approach to improve the computational efficiency of nonlinear heat transfer analysis. The advantage of the proposed method lies that the grids can be used to establish connections between original and modified structures through transfer operators, which is calculated only once for the original structures and can be reused in following grid iterations. Then, the transient nonlinear heat transfer equations of modified structures can be efficiently solved based on the grid iterations in each time step. As a result, the computational cost can be magnificently reduced. Several numerical examples are investigated to comprehensively evaluate the performance of the present algorithm when dealing with the transient nonlinear heat transfer analysis of structures with modifications.

Publication Date


  • 2020

Citation


  • Feng, S. Z., Tao, Y. R., Ma, Z. J., Kr��lczyk, G., & Li, Z. X. (2020). Transient nonlinear heat transfer analysis using a generic grid refinement for structure parameter variations. International Journal of Thermal Sciences, 153. doi:10.1016/j.ijthermalsci.2020.106357

Scopus Eid


  • 2-s2.0-85080971486

Volume


  • 153

Issue


Place Of Publication


Abstract


  • Traditional finite element models are usually established based on specific structures to address the transient nonlinear heat transfer analysis; however, if the structure parameters change one has to reanalyze/rebuild the finite element models, resulting in a lot of additional computational cost. To address this problem, this work develops a generic grid refinement approach to improve the computational efficiency of nonlinear heat transfer analysis. The advantage of the proposed method lies that the grids can be used to establish connections between original and modified structures through transfer operators, which is calculated only once for the original structures and can be reused in following grid iterations. Then, the transient nonlinear heat transfer equations of modified structures can be efficiently solved based on the grid iterations in each time step. As a result, the computational cost can be magnificently reduced. Several numerical examples are investigated to comprehensively evaluate the performance of the present algorithm when dealing with the transient nonlinear heat transfer analysis of structures with modifications.

Publication Date


  • 2020

Citation


  • Feng, S. Z., Tao, Y. R., Ma, Z. J., Kr��lczyk, G., & Li, Z. X. (2020). Transient nonlinear heat transfer analysis using a generic grid refinement for structure parameter variations. International Journal of Thermal Sciences, 153. doi:10.1016/j.ijthermalsci.2020.106357

Scopus Eid


  • 2-s2.0-85080971486

Volume


  • 153

Issue


Place Of Publication