The blade inner channel cooling is a complex convection - conduction coupling problem. this thesis build a three - dimension. compressible turbulence model, and give a general solve method. with the geometrical model of the glossily rectangle straight channel, the rectangle straight channel with in - line arrays disturb plates, the rectangle straight channel with staggered arrays disturb plates, the rectangle straight channel with slant disturb plates, this thesis compute the flow and heat transfer condition when the cold air path though these channels, and gain the temperature field, pressure field, velocity filed, in addition. this thesis also analyze the influence of the different channel height, the different channel materials, the different channels, and gain the function relation between he nusselt number, friction factor and reynolds number. this thesis is emphasis on the new heat transfer enhancement structure, that is, disturb plates, with the comparison with the glossily channel and channel with pin fins, the heat transfer enhancement effect of the former is better, and the conclusion can be used in the design of aircraft blade
葉
片內部通道冷卻是一個復雜的對流?導熱耦合傳熱問題,本文在分析葉
片內部通道冷卻的流動與傳熱情況的基礎上,建立了三維、可壓縮紊流的物理模型,得到了通用的求解辦法;利用不
帶擾流
片的矩形直通道、
帶順排擾流
片矩形直通道、
帶叉排擾流
片、
帶傾斜擾流
片的矩形直通道的幾何模型,計算了冷卻空氣通過這幾種通道時的流動與換熱情況,得到了各種不同情況下計算區域的溫度場、壓力場、速度場;在此基礎上分析了不同的通道高度、不同的葉
片通道材質對葉
片內部通道冷卻的影響,並整理得到了各種通道形式下,努謝爾數和阻力因子與雷諾數的函數關系;本文重點研究了新型的葉
片內部通道冷卻強化傳熱措施?
帶擾流
片的內部冷卻通道的強化傳熱效果,通過與光滑矩形直通道、
帶針肋通道的冷卻效果的比較,表明了這種新型鮚構的優勢,對于葉
片內部通道冷卻結構的設計可以起到指導的作用。
Magnetic sheet and strip - methods of measurement of interlamination resistance and lamination factor and coat adhesiveness
電工鋼
片帶層間電阻塗層附著性疊裝系數測試方法
Abstract : the landscape project of ci lake is built at the belt - like waterfront green land, which is positioned as the recreation and appreciation green land with the theme of city waterfront park
摘要:黃石磁湖湖景工程是建設在磁湖湖畔的一
片帶狀濱水綠地,定位為以城市濱水公園為主題的休閑及觀賞性綠地。
In order to investigate the distribution regularities of axial direction of emerging object, experimental research of paddy threshing and separation used axial flow threshing and separation installation designed by ourselves of screw vane with shutter tooth was carried on
摘要利用自行研製的螺旋葉
片帶板齒式軸流脫粒與分離裝置,進行了水稻脫粒試驗研究,目的是研究脫出物沿滾筒軸向的分佈規律。
These pictures bring back some great memories
這些照
片帶給我一些美好的回憶。
" delivers with a colorful, lush and witty world under the sea.
本
片帶給了觀眾們色彩斑斕、巍巍壯觀、機智詼諧的海底世界
Thus, two colors which match visually but do not emit equivalent amounts of light, as defined by the bandwidth of the filters, will be recorded differently on the film, and therefore differently on the reproduction
因此,兩個視覺匹配但不是反射通過濾色
片帶寬定義的等量光的兩個顏色,在膠
片上的記錄會有所不同,因而復制出來后也就不同。
Fillet steak with cheese
牛裡脊
片帶少司
Methods of measurement of magnetic properties of magnetic steel sheet and strip at medium frequencies
電工鋼
片帶中頻磁性能測量方法
Magnetic materials - classification of surface insulations of electrical steel sheet, strip and laminations
磁性材料.電工鋼
片帶材和層壓板材表面絕緣的分類
Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an epstein frame
用愛潑斯坦方圈測量電工鋼
片帶磁性能的方法
In another aspect, the invention features, in general, a method of making a shaving razor that includes providing a plurality of elongated metal razor blades having cutting edges and first and second longitudinal ends, and securing the first longitudinal ends to a first plastic block and the second longitudinal ends to a second end block at locations on the first and second plastic block such that the cutting edges define a shaving surface, and the blades and blocks provide an integrated blade subassembly
一般而言,本剃須刀有另一個特色:特製剃須刀,包含多個狹長形的的金屬刀片(帶切削刃) ,其第一二縱向末端分別固定在第一二根塑料塊之理想位置;如此,剃削刃確定剃削麵,而刀片和塑料塊構成整體的刀片組。