preliminary burning stage 中文意思是什麼

preliminary burning stage 解釋
預燃階段
  • preliminary : adj 1 預備的;初步的,初級的。2 序言性的,緒言的。n 1 〈常 pl 〉初步,開端;預備行為[步驟、措施]...
  • burning : adj. 1. 燃燒的,像燃燒一樣的;灼痛的;辛辣的。2. 猛烈的,強烈的;熱烈的。3. 議論紛紛的;緊急的。4. 極惡劣的;明擺著的。n. 1. 燃燒。2. 燒制。3. 炎癥。
  • stage : n 1 講臺;舞臺;戲院,劇場;〈the stage〉戲劇,戲劇藝術;戲劇文學;〈the stage〉戲劇業;劇壇。2 ...
  1. Under the influence of the submergence the turbulence intensity are quite high at the end stage of burning. however, the turbulence intensity decreases obviously at the medium stage and the preliminary stage of burning because the flow disturbance is eliminated by the mixture of injection flow and main flow

    受噴管潛入的影響,結束時刻流場的湍流脈動非常強烈,而中間時刻和初始時刻,由於加質流與主流的強迫混合可以消除氣流擾動向下游的傳播和擴展,流場的湍流脈動明顯減弱。
  2. At the preliminary stage of burning the gas flows along the back surface of the submerged nozzle and no recirculation forms in the aft - end cavity. at the medium stage of burning a weak recirculation forms in the rear of aft - end cavity by the force of injection flow. at the end stage of burning the flow separates at the c ombustion channel and a strong vortex forms in the aft - end cavity

    實驗結果表明,在發動機工作過程中隨著燃面的退移,燃燒室尾部的流動會發生很大變化,初始時刻背壁區加質流沿噴管背壁進入噴管,背壁區沒有迴流形成;中間時刻在加質流的驅動下背壁區後部形成較弱的迴流;結束時刻氣流在燃燒室壁面分離,背壁區形成強烈的迴流。
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