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題名 | 太陽能熱水器架設於強風定常流升力影響之數值研究=Numerical Studies of the Uplift Effect over a Solar Water Heater in Strong Wind |
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作者姓名(中文) | 徐子圭; 張克勤; 田榮華; 王偉政; 劉育政; | 書刊名 | 航空技術學院學報 |
卷期 | 10:1 2011.08[民100.08] |
頁次 | 頁167-172 |
分類號 | 446.56 |
關鍵詞 | 太陽能熱水器; 集熱板; 離地型; 渦流; 計算流力; Solar water heater; Heat collector; Suspend; Vortex; CFD; |
語文 | 中文(Chinese) |
中文摘要 | 颱風侵襲為台灣主要的天然災害之一,太陽能熱水器系統安裝在住家頂,颱風入侵時造成的破壞最為嚴重,由於太陽能熱水器系統背面吹入,造成集熱板上、下板面承受強大風壓而使太陽能板受損;本究以計算流體力學方法,探討貼地型及離地型太陽能熱水器系統於輕颱風速(30 m/s)之流場特性,同時比對風洞實驗量測結果為驗證;研究發現,本研究標的之三維效應影響顯著,無法以二維模擬方式探討,集熱板離地架設 10cm可降低升力約 16.5%,水桶後方集熱板上表面有分離泡之形成,同時集熱板兩翼端產生之翼尖渦會與其相互耦合,產生渦流之三維翼展面延伸現象。 |
英文摘要 | Typhoon is one of the major natural disasters in Taiwan. The solar water heater system installed in the house roof has the most serious damage caused by typhoon invasion. Because the wind blows into the backward of the solar water heater system, the heat collecter is damaged by the stronger wind pressure gradient induced between the upper and lower. This study uses CFD method to investigate the flowfield over a suspended and ground solar water heater during the wind speed about 30m/s, and compares the results with the experimental data for validation. The results show that the 3D flowfield effect is clear, and 2D model can not simulated the flowfield. The collector Erected 10cm away from the ground can be reduced to approximately 16.5% of the lift, and the separation bubbles are induced behind the bucket of the collector surface. The wingtip vortices generated and interacted from the collector-side, and the separation bubbles is extending in spanwise. |
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