Numerical optimization of the fin shape experiments of a heat conjugate problem surface air/oil heat exchanger (SACOC)
| Autor: | Leo M. González, Eusebio Valero, Miguel Chávez-Modena |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Fluid Flow and Transfer Processes
Pressure drop Optimization Work (thermodynamics) Materials science Fin Finite volumes Conjugate heat problem 020209 energy Mechanical Engineering Adjoint method 02 engineering and technology Mechanics Aircraft Engines Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas SACOC heat exchanger Position (vector) 0103 physical sciences Heat transfer Heat exchanger 0202 electrical engineering electronic engineering information engineering Contact area Reduction (mathematics) |
| Zdroj: | International Journal of Heat and Mass Transfer |
| Popis: | Efficientaircraft enginedesigns imply the presence of a surface air/oilheat exchangerplaced at thebypass flowseparation of the engine. The heat exchanger consists of several parallellongitudinal finsthat increase the contact area to obtain a higher heatdissipation rate. The design of these fins is an important task as the pressure drop generated by the presence of the heat exchanger is the largest drawback to be minimized in the final setup. Consequently, an efficient design of the fins that optimizes the global performance of the heat exchanger is highly demanded. The result of this optimization process should minimize the pressure drop caused by the exchanger without decreasing the heat transfer. The optimization methodology proposed in this work is split in two independent parts: in the first one, the fin shape is optimized using the adjoint method and the derived sensitivity function that controls the position of the fin shape design. In parallel, the range of fin thickness and distance between fins was investigated to have an optimized fin distribution for a given SACOC width. Once the geometry was optimized, the coupled conjugate heat problem is numerically solved using realistic conditions showing good accuracy in the two presented validations. The result for the optimized geometry presents a substantial pressure drop reduction with little heat transfer variation, addressing the objectives that motivated the present study. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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