密閉空腔流場不對稱性分析

Asymmetry Fluid Flow Analysis of Closed Cavity

李朋勳(Lee Peng-Hsun)

指導教授 ： 蔡建雄 ； 王耀男

國立屏東科技大學/工學院/車輛工程系所/碩士(2012年)

https://doi.org/10.6346/NPUST.2012.00219

摘要

本研究主要以計算流體力學CFD的方法來探討聚光型太陽能電池模組的內部流體流動之情形。由於在進行模擬當中是以40顆太陽能電池為一組所組合而成的，發現其內部流體較為混亂，為了使流場易於判斷與分析故採用單顆聚光型太陽能電池模組來進行分析。參數分析時發現到模組內流體會因為雷利數的大小、模組幾何外形以及中心熱源面積大小所影響，並產生對稱性與不對稱性的流場變化，並針對此流場變化的因素及流動方式與方向來加以探討。

關鍵字

計算流體力學 ； 高聚光太陽能模組 ； 雷利數 ； 非對稱性流場

並列摘要

The asymmetric flow behavior inside the concentrated photovoltaic module (HCPV) is investigated utilizing CFD method. In general, the HCPV unit included 40 cells embedded. To simplify the flow field but not loss the generality, the HCPV unit with one cell embedded is used instead through the study. The results show that the flow field inside the HCPV is affected by the Rayleigh number (Ra), the cell size and the cross-section of HCPV. The symmetric flow inside HCPV is changed to the asymmetric flow when the Ra number is large than the threshold value. The flow patterns are also different due to the cell size change. To the best knowledge of authors, there has been no scholar finds an asymmetric flow field inside the symmetric HCPV module.

並列關鍵字

CFD ； HCPV ； Rayleigh number ； Non-symmetry of the flow field

參考文獻

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