滑流的影響 的英文怎麼說
中文拼音 [gǔliúdeyǐngxiǎng]
滑流的影響
英文
slipstream effect-
Based on hydrodynamic lubrication theory, a rectangular tire tread model for simulating the viscous hydroplaning of tire is set up, taking into consideration the effects of hydrodynamic action, squeeze action and road roughness with numerical solutions obtained
摘要根據流體動力潤滑理論，將輪胎貓性滑水問題模擬為胎面單元與路面之間的動壓、擠壓膜問題，同時考慮了路面粗糙度的影響，建立了輪胎胎面單元黏性滑水問題的數學模型，並進行數值求解。The paper analyzes the characteristic of aerodynamics with structure of helicopter propeller blade, dissertrates vortex theory and the theory about gliding air field which produce the power of helicopter propeller blade. at the same time it also deduce the method of computing the induced velocity produced by helicopter propeller blade with vortex theory. at last, an influcence to the spreading of sound is discussed
並且將兩種定位演算法進行了比較，說明了優劣；結合直升機的結構分析了旋翼的空氣動力特性，論述了直升機旋翼產生拉力的滑流理論和渦流理論，結合渦流理論論述了直升機旋翼流場誘導速度的計算方法，在此基礎上分析了直升機旋翼流場對聲音傳播的影響。The fieldworks and the test results show that there appears three failure models on the natural slope, that is, rotational slide, translational slide and earth flows. triaxal tests, including the isotropical consolidation drained and undrained compression and anistropically drained tests, are performed on loosely compacted specimens. the critical state line ( csl ) is obtained in the e - lgp " plot based on the results of the above tests
在野外調查的基礎上，結合試驗成果分析，初步得出自然斜坡破壞的模式，包括旋轉型滑動、平移型滑動及土流等；並對暴雨滑坡轉化成泥石流的影響因素和碎屑物質的運動距離作了定性分析；初步分析了滑坡轉化成泥石流的流態化機理。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。In water hydrostatic bearing lubrication, however, more accurate research results can be obtained as long as inertia of water flow is considered, because inertia item almost has the same quantitative level as the viscous one
然而，在水靜壓支承潤滑中，水的流動慣性項幾乎與粘性項具有相同的數量級，對水膜的流速及壓力分佈具有一定的影響，因此應予以考慮，才能得出更加準確的研究結果。Simulating results reveal that hydrodynamics of catalysts in riser reactor is very complex due to the effect of injection and catalysts backmix dramatically near the nozzle, reaction products unevenly distributie along the riser height, there exists apparently temperature gap between gas - phase and solid - phase near the nozzle and the temperture of two phase is nearly equal at middle - top part
模擬結果表明，由於原料油射流的影響，提升管反應器內催化劑顆粒的流動特徵非常復雜，在噴嘴附近的催化劑顆粒存在明顯的滑落返混；裂化產物濃度沿提升管存在非均勻分佈；氣粒兩相間溫差在噴嘴附近顯著，在中上部氣粒兩相溫度幾乎相等。The stability, rheology, chain structure and consecutive medium model in magnetorheological fluids are analyzed. according to the contribution of shear stress and normal pressure in polishing zone, the quantificational machining model of mrp is presented. as an example of plane workpiece, the influences of machining parameters on removal rate and surface roughness in mrp are studied
5 、磁流變拋光（ mrf ）是超光滑光學表面的一種新型加工技術，本文從mrf的磁、力學性質出發，研究了磁流液的穩定性、流變效應、鏈化結構和連續介質模型；根據拋光區內剪應力、正壓力的分佈特徵，提出了mrf的定量加工模型；然後以平面工件的磁流變拋光為例，揭示了工藝參數對材料去除率和表面粗糙度的影響規律。Induced by geological, geomorphological and hydrogeological features and human activity, wide - spread geological hazards such as debris flows, landslides, land collapses and potential unstable slopes often occur in danba, sichuan
摘要受地質、地貌、水文氣象條件及人類活動的影響，丹巴縣泥石流、滑坡、崩塌及潛在不穩定斜坡地質災害呈現分佈廣、成災快、危害大等特點。For the case of static loaded er journal bearings, the influence of er effects on the lubrication performance are studied under various radius clearances, eccentricity ratios and shear rates
對于穩載電流變滑動軸承的潤滑問題，研究了不同平均間隙、不同偏心率以及不同剪切速率下電流變效應對軸承潤滑性能的影響。In oil lubrication theory, the effect of inertia on flow state of lubrication film is generally ignored because the inertia item is far smaller than the viscous one
在油潤滑理論中，一般情況下都忽略慣性對潤滑膜流動狀態的影響，這是因為慣性項與粘性項相比要小得多。It is validated that the numerical methods can absolutely predict the flow in the microchannels. the flow field around the roughness and the pressure drop of midline along flow direction are analyzed. it ' s found that the range of the pressure drop change relate to the magnitude of relative roughness, the distance between two parallel planes, the re number and ratio of the size of roughness and the distance between two roughness
通過對粗糙元周圍流場和充分發展段中心線壓力曲線的分析，發現有粗糙元存在的兩平行平板間微通道，其充分發展段壓降大於光滑平板充分發展段壓降；當相對粗糙度和re不變時，隨著板間距的減小，粗糙度對主流的影響不斷增大；當板間距和相對粗糙度不變時，在層流狀態下，粗糙度對流動的影響不隨re的變化而變化；當板間距和re保持不變時，相對粗糙度越大，其對流動的影響就越大。The effects of the slipstream boundary are solved by the slipstream boundary condition met using the so - called vortex image method. based on these considerations, the change in the circulation around the wing is obtained, and the velocities induced by the original vortices and the imaged vortices at the wing are subsequently derived. the present research also gives an analytical expression of the drag change due to the slipstream interference
對于滑流邊界的影響，用「鏡像法」來使滑流邊界條件得到滿足，導出了由於滑流影響機翼環量的改變，求得渦及其鏡像在機翼處的誘導，並首次導出了螺旋槳滑流對機翼阻力特性的影響的解析表達式。The numerical results show that : with the enhancement of er effects, the bearing capacity is obviously increased ; the increase magnitude is larger when small radius clearances and large eccentricity ratios ; at low shear rates, the influence of er effects on the lubrication performance of journal bearings are more obvious
數值研究表明：隨著電流變效應的增強，軸承潤滑油膜的承載能力明顯提高；軸承半徑間隙越小，偏心率越大，軸承承載能力增加的幅度也越大；在低剪切速率下，電流變效應對軸承潤滑性能的影響較大。On the other hand, the quasi - dynamic method has advantages in calculational efficiency. ( 2 ) the minimum oil film thickness and oil film stiffness characteristics of ball bearings are studied by the elastohydrodynamic lubrication theory
（ 2 ）基於彈流潤滑理論，研究了滾動軸承的最小油膜厚度和油膜剛度特性，分析了不同載荷參數對它們的影響規律。In this paper, based on the theory of ehl ( elasto - hydrodynamic lubrication ), a study is conducted to investigate the impacts of geared factors ( including gear speed ratio, gear teeth modulus and center distance ) on the lubrication behavior of gearing, and some useful conclusions are obtained
應用彈性流體動力潤滑理論，計算分析了傳動比、模數及中心距等齒輪參數對齒輪副潤滑性能的影響，得出了一些有益的結論。In the end, the theory of fractal geometry is applied to the waves propagation and scattering in atmospheric turbulence, and the first and second order moments of the scattering fields are derived by considering the effects of the fractal atmospheric turbulence. the normalized back - scattering radar cross section of a perfectly conducting disk is calculated. the influence of fractal dimension of atmospheric turbulence on the radar cross section is analyzed
本文最後將分形理論引入到湍流大氣中的波傳播和散射領域，導出了分形大氣湍流中光滑導體目標散射場的一階矩和二階矩，以光滑導體圓盤為例研究了湍流大氣的分維對導體目標後向散射截面的影響。Effects of anion channels on the influx of extracellular calcium and the release of intracellular calcium were observed
觀察陰離子通道對血管平滑肌外鈣內流和內鈣釋放的影響。By means of prototype observation, analysis with materials and theories, and laboratory test, the author deeply analyzed the causes and procedure of canal cross section erosion, and obtained eight causes which resulted the canal deform including flow, seepage, runoff, collapse of bank, dry effect, human activity, wave flush, frozen, and then stressed to discuss the frozen process
本文通過原型觀測、資料分析、理論分析、室內試驗對北引渠道變形的成因和發生機理進行了較為深入的分析研究，給出了造成北引渠道變形的八大原因：流水引起的變形、滲透引起的沖刷、地表徑流引起的沖刷、滑坡變形、乾燥作用、人類和動物活動的影響、風浪引起的沖刷、凍融侵蝕，並著重闡述了凍融侵蝕的機理。Applying the computer program developed by this paper, and choosing the real values of the gear transmission, this paper has completed more than 50 sets of calculations of the thermal elastohydrodynamic lubrication based on the non - newtonian fluid. the following conclusions can be drawn according to the computational results : 1, when the gear teeth are engaged at the pitch point, the changes of both the gear rotational speed and the load have little influence on the pressure distribution and the film shape, but they have large influence on the film temperature distribution
應用本文研發的計算機程序，選用齒輪傳動的實際參數，先後進行了50餘組的基於非牛頓流體的熱彈流潤滑計算，所得的主要結論如下： 1 、當齒輪在節點嚙合時，齒輪轉速及載荷的變化對壓力分佈口太原理工大學碩士學位論文和油膜形狀的影響不大，但對溫度分佈有明顯的影響。My paper attempts to attain some conclusions from this study of gas cavity, and these conclusions may be useful to controlling bearing operation. the oiling system is an important part of radial - thrust floating - ring hybrid bearing. there are some factors that lead to the variation of oil - pressure in the oiling system
本論文試圖從理論方面研究由於供油壓力變化導致氣穴現象（這時候呈現兩相流潤滑）對徑?推聯合浮環動靜壓軸承動靜態特性的影響，為以後可能尋求主動控製作了準備。分享友人