反應(yīng)釜外文翻譯--在攪拌釜中大渦模擬的混合時間-其他專業(yè)-資料下載頁
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【導(dǎo)讀】片水翼CBY葉輪被報道。葉輪旋轉(zhuǎn)是建模使用滑動網(wǎng)格技術(shù)。獲得從實驗和LES之間進行了預(yù)測要比傳統(tǒng)的雷諾平均n-s方法要好。示蹤響應(yīng)預(yù)測的曲線由LES和實驗之間來預(yù)測的。結(jié)果表明,LES是一個可靠的工。具來研究在攪拌罐里不穩(wěn)定周期行為的紊流。1介紹：機械攪拌罐廣泛應(yīng)用于許多工業(yè)過程。在攪拌釜中流結(jié)構(gòu)是高。度三維并且復(fù)雜,涵蓋范圍廣泛的空間和時間尺度。液體是通過坦克傳閱的作用。這個漩渦葉輪旋轉(zhuǎn)產(chǎn)生的,保留其相干就大量距離到散裝液體,伴。隨著高剪切率和強烈的湍流活動。因此,他們是必不可少的在流場的混合性能。性,通常θ95為了達到95%以上最后的濃度。在任何情況下,混合時間的一個攪拌。釜通常用于指示其有效性。過去的30年廣泛的實驗研究已報道混合時間。計算流體動力學(xué)模擬混合過程擁有偉大的計算機技術(shù)的進步。賴于精確的流體動力學(xué)計算,特別是關(guān)于湍流建模。不同的軸徑向循環(huán)循環(huán)是預(yù)測下大舉CFD。流流動不穩(wěn)定和準周期性的行為。
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