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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.9 No.3
- 발행연도
- 2016.9
- 수록면
- 229 - 236 (8page)
이용수
초록· 키워드
오류제보하기
Exergetic analysis was introduced in optimization of a rotating equilateral triangular internal cooling channel with staggered square ribs to maximize the net exergy gain. The objective function was defined as the net exergy gain considering the exergy gain by heat transfer and exergy losses by friction and heat transfer process. The flow field and heat transfer in the channel were analysed using three-dimensional Reynolds-averaged Navier-Stokes equations under the uniform temperature condition. Shear stress transport turbulence model has been selected as a turbulence closure through the turbulence model test. Computational results for the area-averaged Nusselt number were validated compared to the experimental data. Three design variables, i.e., the angle of rib, the rib pitch-to-hydraulic diameter ratio and the rib width-to-hydraulic diameter ratio, were selected for the optimization. The optimization was performed at Reynolds number, 20,000. Twenty-two design points were selected by Latin hypercube sampling, and the values of the objective function were evaluated by the RANS analysis at these points. Through optimization, the objective function value was improved by 22.6% compared to that of the reference geometry. Effects of the Reynolds number, rotation number, and buoyancy parameter on the heat transfer performance of the optimum design were also discussed.
목차
Abstract
1. Introduction
2. Numerical Analysis
3. Optimization Method
4. Results and Discussion
5. Conclusion
References
참고문헌 (24)
참고문헌 신청
[학술지(정기간행물)] - Han, J. C. / 1988 / Heat Transfer and Friction Characteristics in Rectangular Channels with Rib Turbulators / ASME Journal of Heat Transfer 110 : 321 ~ 328
[학술지(정기간행물)] - Chandra, P. R. / 2003 / Heat Transfer and Friction Behavior in Rectangular Channels with Varying Number of Ribbed Walls / International Journal of Heat and Mass Transfer 46 : 481 ~ 495
[학술지(정기간행물)] - Islam, M. S. / 2002 / Experimental Analysis of Turbulent Flow Structure in a Fully Developed Rib-Roughened Rectangular Channel with PIV / Experiments in Fluids 33 : 296 ~ 306
[학술지(정기간행물)] - Murata, A. / 2004 / Effect of Rib Orientation and Channel Rotation on Turbulent Heat Transfer in a Two-Pass Square Channel with Sharp 180° Turns Investigated by Using Large Eddy Simulation / International Journal of Heat and Mass Transfer 47 : 2599 ~ 2618
[학술지(정기간행물)] - Wright, L. M. / 2005 / Influence of Entrance Geometry on Heat Transfer in Rotating Rectangular Cooling Channels (AR=4:1) with Angled Ribs / Journal of Heat Transfer 127 : 378 ~ 387
[학술지(정기간행물)] - Chandra, P. R. / 2003 / Heat Transfer and Friction Behavior in Rectangular Channels with Varying Number of Ribbed Walls / International Journal of Heat and Mass Transfer 46 : 481 ~ 495
[학술지(정기간행물)] - Islam, M. S. / 2002 / Experimental Analysis of Turbulent Flow Structure in a Fully Developed Rib-Roughened Rectangular Channel with PIV / Experiments in Fluids 33 : 296 ~ 306
[학술지(정기간행물)] - Murata, A. / 2004 / Effect of Rib Orientation and Channel Rotation on Turbulent Heat Transfer in a Two-Pass Square Channel with Sharp 180° Turns Investigated by Using Large Eddy Simulation / International Journal of Heat and Mass Transfer 47 : 2599 ~ 2618
[학술지(정기간행물)] - Wright, L. M. / 2005 / Influence of Entrance Geometry on Heat Transfer in Rotating Rectangular Cooling Channels (AR=4:1) with Angled Ribs / Journal of Heat Transfer 127 : 378 ~ 387
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