Thermo-electric multiphysics topology optimization using finite volume method
Size and weight are two critical factors in the design of automotive inverters. Bus bars form essential components of the inverter assembly and significantly contribute to the overall weight of the assembly. Hence, optimization of the shape of the bus bar is crucial for an optimal unit. The optimal...
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2025-07-01
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| Series: | Mechanical Engineering Journal |
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| Online Access: | https://www.jstage.jst.go.jp/article/mej/12/4/12_25-00075/_pdf/-char/en |
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| author | Hitesh Kumar SINHA Krishna Mohan SINGH |
| author_facet | Hitesh Kumar SINHA Krishna Mohan SINGH |
| author_sort | Hitesh Kumar SINHA |
| collection | DOAJ |
| description | Size and weight are two critical factors in the design of automotive inverters. Bus bars form essential components of the inverter assembly and significantly contribute to the overall weight of the assembly. Hence, optimization of the shape of the bus bar is crucial for an optimal unit. The optimal shape should require minimum material without compromising the functional requirements of low-temperature rise in the bus bar assembly. In the present work, we have developed a multiphysics simulation-based topology optimization (TO) algorithm that addresses the thermal trade-offs in the design process. We have used a density-based topology optimization method for optimal material distribution for the DC bus bar. The cell-centered finite volume method (FVM) has been used to discretize the strongly coupled governing equations. The sensitivity is derived for the finite volume global matrix, and the adjoint sensitivity method is used to determine the Lagrange multipliers. The method of moving asymptotes (MMA) is used for the optimization. These algorithms have been implemented in a C++ program. Numerical results are presented for a few sample test cases, which demonstrate the effectiveness of the finite volume-based topology optimization software for bus bar design. |
| format | Article |
| id | doaj-art-31bc98ef9e05453e8bdc83ad025756ab |
| institution | OA Journals |
| issn | 2187-9745 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Mechanical Engineering Journal |
| spelling | doaj-art-31bc98ef9e05453e8bdc83ad025756ab2025-08-20T01:59:35ZengThe Japan Society of Mechanical EngineersMechanical Engineering Journal2187-97452025-07-0112425-0007525-0007510.1299/mej.25-00075mejThermo-electric multiphysics topology optimization using finite volume methodHitesh Kumar SINHA0Krishna Mohan SINGH1Department of Mechanical and Industrial Engineering Indian Institute of Technology RoorkeeDepartment of Mechanical and Industrial Engineering Indian Institute of Technology RoorkeeSize and weight are two critical factors in the design of automotive inverters. Bus bars form essential components of the inverter assembly and significantly contribute to the overall weight of the assembly. Hence, optimization of the shape of the bus bar is crucial for an optimal unit. The optimal shape should require minimum material without compromising the functional requirements of low-temperature rise in the bus bar assembly. In the present work, we have developed a multiphysics simulation-based topology optimization (TO) algorithm that addresses the thermal trade-offs in the design process. We have used a density-based topology optimization method for optimal material distribution for the DC bus bar. The cell-centered finite volume method (FVM) has been used to discretize the strongly coupled governing equations. The sensitivity is derived for the finite volume global matrix, and the adjoint sensitivity method is used to determine the Lagrange multipliers. The method of moving asymptotes (MMA) is used for the optimization. These algorithms have been implemented in a C++ program. Numerical results are presented for a few sample test cases, which demonstrate the effectiveness of the finite volume-based topology optimization software for bus bar design.https://www.jstage.jst.go.jp/article/mej/12/4/12_25-00075/_pdf/-char/entopology optimizationthermo-electricmultiphysicsfinite volume methodmethod of moving asymptotes |
| spellingShingle | Hitesh Kumar SINHA Krishna Mohan SINGH Thermo-electric multiphysics topology optimization using finite volume method Mechanical Engineering Journal topology optimization thermo-electric multiphysics finite volume method method of moving asymptotes |
| title | Thermo-electric multiphysics topology optimization using finite volume method |
| title_full | Thermo-electric multiphysics topology optimization using finite volume method |
| title_fullStr | Thermo-electric multiphysics topology optimization using finite volume method |
| title_full_unstemmed | Thermo-electric multiphysics topology optimization using finite volume method |
| title_short | Thermo-electric multiphysics topology optimization using finite volume method |
| title_sort | thermo electric multiphysics topology optimization using finite volume method |
| topic | topology optimization thermo-electric multiphysics finite volume method method of moving asymptotes |
| url | https://www.jstage.jst.go.jp/article/mej/12/4/12_25-00075/_pdf/-char/en |
| work_keys_str_mv | AT hiteshkumarsinha thermoelectricmultiphysicstopologyoptimizationusingfinitevolumemethod AT krishnamohansingh thermoelectricmultiphysicstopologyoptimizationusingfinitevolumemethod |