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| A topology optimization model for conducting paths design of cooling structures considering transient effect |
| Received:May 08, 2017 Revised:October 11, 2017 |
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| DOI：10.7511/jslx20170508001 |
| KeyWord:transient heat conduction topology optimization maximum temperature control time-dependence sensitivity analysis |
| Author | Institution |
| 吴书豪 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 张永存 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 刘书田 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
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| Abstract: |
| In practical engineering applications,thermal loads often last for a short time,or appear in a cyclical manner.In these cases,significant transient effects usually occur.However,current conducting paths designs for cooling structures are mostly based on steady-state heat conduction topology optimization method,which does not take into consideration the transient effect.In this paper,a transient heat conduction topology optimization model was proposed,in which the regional temperature control function was taken as the objective function,and the maximum temperature of a specific area through a time duration was minimized.The sensitivities of the objective function with respect to selected design variables are derived based on the adjoint variable method.Numerical examples show that the designs obtained based on the proposed model are significantly superior to those obtained by the steady heat conduction based model with enhanced thermal dissipation,thus proving that it is necessary to include the transient effect in designing the conducting paths. |
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