渦流噴射 的英文怎麼說
中文拼音 [guōliúpēnshè]
渦流噴射
英文
eddy effusion-
Vortex injection provides a form of swirl or cyclone combustion for a rocket engine similar to systems often employed in industrial furnaces.
渦流噴射在火箭發動機中產生一種渦流或旋渦形式的燃燒，與工業爐中常採用的系統相似。The ejected coolant interacts with the external flow near the endwall and generates aerodynamic and thermodynamic losses in the process. this reduces turbine stage efficiency and together with the consumption of cooling air is detrimental to the overall cycle efficiency
但這種方法中噴射的冷空氣與端壁附近的外流場相互作用產生氣動力和熱動力損失，並且消耗冷卻空氣，從而損害渦輪的整體循環效率。Understanding the three - dimensional nature of these flows and understanding the interactions between the ejected coolant and the endwall flow are the key to a successful endwall film - cooling design. results from this investigation enhance this understanding
揭示流場的三維特性以及噴射的冷空氣與端壁附近的外流場相互作用規律是渦輪葉柵端壁氣膜冷卻設計成功的關鍵，本文的研究成果增加了對此規律的更深入了解。The distributions of velocity vector, vorticity. turbulent kinetic energy and some other detailed flow information in the field are obtained. the influence of electric field on the flow field is discussed and gives a deep insight on it
3 、首次採用piv技術對荷電噴霧射流流場進行了測量，獲得了整個流場的瞬時速度、湍能、渦量等信息分布圖，研究了流場特性隨充電電壓的變化情況。The shearing layer is carried by the jet and the eddy is formed because of the instability and selective amplification of shearing layer which will propagate to the downstream. as the eddy impacts the impinging wall, a wave of pressure disturbance with certain frequency is induced. this wave then propagates to the upstream with high speed, and results in the overlap and amplification of the waves when the frequencies of them are close with each other
當前噴嘴流束中的不穩定擾動波在穿過腔內的剪切層時，剪切層對其有選擇放大作用，形成渦環結構，剪切流動中渦環與碰撞壁撞擊，在碰撞區域產生壓力擾動波並向上游反射，在上游剪切層分離處誘發新的擾動的產生，當新擾動與原擾動匹配時，射流上游就被不斷地受到周期性激勵，腔內就產生流體自激振蕩並在後噴嘴出口形成脈沖射流。Furthermore, the horseshoe shape vortex system occurred to the upstream of the jet exit and the layer structure of vortexes occurred to the wake of the reverse flow region downstream of the jet are also investigated
另外，觀測到射流噴口上流的馬蹄渦系以及射流逆流區下游尾跡區旋渦的層狀結構形式。This dissertation has on the research and design of a micro turbine engine as background and it is for the purpose of comprehending viscous flow behaviors in micro scaled conditions and that in the mini - turbine cascades. a mini wind tunnel is designed and set up which also can be used in other micro flow experiments. on the basis of this mini wind tunnel, three mini flow experiments, including micro jet experiment, micro boundary layer experiment and mini - turbine cascades experiment, have been carried out
本文以某型微型渦輪噴氣發動機研製為背景，以認識微尺度下粘性流體流動狀態及其機理和微渦輪葉柵通道內部流動特性為目的，設計並搭建了除本實驗外還可供其他流體力學實驗使用的微型風洞，並在該微型風洞基礎上進行了微尺度射流實驗、微尺度壁面邊界層實驗和微尺度渦輪葉柵實驗。The two wall jets collide with each other and turn upward to form an upwash fountain which increases the lift force of the upper plate
包圍在噴射流與噴泉流附近的流體會被其帶入而在周圍形成數個渦流。分享友人