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- There were better benefits through cooling by slot and wiggle-strip film cooling. 其中縫隙式氣膜冷卻和波紋板式氣膜冷卻冷卻結構的冷卻效果比較好。
- TLC technique can be successfully applied to reflect film cooling effectual area and cooling effect. 利用液晶測溫技術(shù)可以很好地反映氣膜冷卻區域及冷卻效果等。
- There were three film cooling schemes used, namely, slot, discrete-hole and wiggle-strip. 采用的冷卻方案共有3種，分別是縫隙式、離散孔式和波紋板式氣膜冷卻方案。
- The empiric formulas for calculating slot film cooling effectiveness were derived from the test data according to the turbulence-mixing model. 根據湍流混合模型及氣膜效率試驗數據歸納了計算縫槽氣膜冷卻氣膜效率的經(jīng)驗關(guān)系式。
- The unsteady wake made the time-averaged film cooling effectiveness decreased at blowing ratio of 0.5, rod diameter of 4mm. 在吹風(fēng)比M=0.;5，細鋼棒直徑4mm時(shí)，非定常尾跡使氣膜的時(shí)均冷卻有效溫比降低。
- The enhancement of turbulence level lead to obvious decrease in film cooling effectiveness when p/d is large and the momentum ratio is high. 在孔節距及動(dòng)量比均較大時(shí)，主流湍流度的增大會(huì )導致氣膜冷卻效率較為明顯的下降.
- Film cooling effectiveness for injection from single row and double row dustpan shaped holes has been studied experimentally. 摘要對雙排錯排簸箕形孔氣膜冷卻效率進(jìn)行了實(shí)驗研究，測出了孔排下游的局部冷卻效率的分布。
- This novel method avoids the shortcomings of conventional spray or film cooling systems, such as water penetration through cracks, high maintenance requirement, etc. 這種新穎的方法避免了傳統噴灑冷卻或薄霧冷卻系統的不足,例如水滲透進(jìn)入縫隙。
- The Film cooling effectiveness on the blade surface were measured in the cases of mainstream Reynolds number from 250000 to 450000 and blowing ratio from 0.5 to 2.5. 實(shí)驗的參數變化范圍是：基于葉片弦長(cháng)的來(lái)流雷諾數250000~450000，吹風(fēng)比0.;5~2
- The lengthways coupled-vortex behind the film cooling holes which is of high vorticity and low vortex heart is helpful to improve the film cooling efficiency on the area covered. 氣膜孔后高渦量、低渦心位置的縱向耦合渦的形成有助于提高其覆蓋區域的氣膜冷卻效率；
- This paper presented influence of factor on film cooling,enhanced heat transfer in tunnel and heat pipe cooling,how to apply and development for these technologies. 詳細地闡述了對氣膜冷卻、內部強化換熱以及熱管冷卻等的影響因素,目前的應用狀況以及發(fā)展前景。
- Hu Yaping,Ji Honghu.Synergetic analysis of velocity and temperature fields of flat plate film cooling[J].Journal of Enginee-Ring Thermophysics,2004,25(1):94-96(in Chinese). [2]胡婭萍;吉洪湖.;平壁氣膜冷卻流場(chǎng)與溫度場(chǎng)的協(xié)同分析[J]
- Investigation of local heat transfer characteristics near film cooling holes about inner side of turbine blade midchord area with impingement was carried out experimentally. 摘要對葉片弦中區內部“沖擊-氣膜出流”冷卻方式中氣膜孔附近壁面的換熱特性進(jìn)行了實(shí)驗研究。
- That was infinitely better than his last film. 這比他上一部電影不知勝過(guò)多少倍。
- Numerical investigation for local heat transfer characteristics of the inner side of turbine blade near film cooling holes, whether there is impingement or no has been carried out with an RSM turbulence model. 摘要用RSM模型對有、無(wú)沖擊氣膜出流冷氣側氣膜孔局部換熱特性進(jìn)行了數值研究。
- When there is impingement, the effect of flow and geometrical parameters on the local heat transfer characteristics near film cooling holes is investigated, and the mechanism of local heat transfer characteristics is obtained. 在有沖擊射流時(shí)，著(zhù)重研究了流動(dòng)和幾何參數對氣膜孔局部換熱特性的影響，分析了“沖擊－氣膜出流”局部換熱特性規律。
- When there is no impingement, the investigation about flow extravasation effect form film cooling holes is carried out with different cross flow Reynolds Numbers and different density flow ratios of the film outflow to cross flow. 在無(wú)沖擊射流時(shí)，通過(guò)改變來(lái)流雷諾數、氣膜出流與橫流密流比，對氣膜孔的“溢流效應”進(jìn)行了研究。
- The flow fields and cooling effectiveness of the film cooling from a row of cylindrical angled holes with special sphenoid tabs are investigated numerically at different blowing ratios. 在傾斜圓柱形氣膜孔中加裝一種特制的楔形突片+結構,可以改善氣膜孔下游平均冷卻效率,本文對此進(jìn)行了數值研究。
- Xiang Anding,Zhu Huiren,Liu Songling,et al.Discharge coefficient measurements for film cooling holes on blade surface in a turbine cascade[J].Journal of Propulsion Technology,2003,24(3):216-218. [6]向安定;朱惠人;劉松齡;等.;渦輪導向葉片表面氣膜孔流量系數的實(shí)驗研究[J]
