本文選題：攪拌　切入點(diǎn)：剪切性能　出處：《化學(xué)工程》2017年08期 　論文類型：期刊論文

【摘要】：不同攪拌工況下剪切性能的需求是選用攪拌器的一個(gè)重要指標(biāo),文中基于對(duì)常規(guī)的6種攪拌器流場(chǎng)的CFD模擬,計(jì)算了攪拌器各自的剪切性能量綱一數(shù)C_3,分析了攪拌流場(chǎng)中剪應(yīng)力的累計(jì)概率分布及統(tǒng)計(jì)平均結(jié)果。二者對(duì)比發(fā)現(xiàn):從宏觀平均效果上看,攪拌器剪切性能滿足直葉槳斜葉槳,圓盤(pán)渦輪開(kāi)啟渦輪槳式;而剪應(yīng)力極大值影響作用則是直葉圓盤(pán)渦輪斜葉圓盤(pán)渦輪直葉槳式斜葉開(kāi)啟渦輪直葉開(kāi)啟渦輪斜葉槳式。因此,對(duì)剪切作用敏感的攪拌過(guò)程,在采用常規(guī)的攪拌器剪切性能評(píng)價(jià)的基礎(chǔ)上,還需要充分考慮攪拌流場(chǎng)中剪應(yīng)力極大值的影響,合理選用攪拌器。
[Abstract]:The requirement of shear performance under different stirring conditions is an important index of selecting agitator. This paper is based on the CFD simulation of the flow field of six kinds of agitators. The shear performance dimensions of agitator C3 are calculated, and the cumulative probability distribution and statistical average results of shear stress in agitator flow field are analyzed. It is found that the shear performance of agitator meets the oblique blade propeller of straight blade from the macroscopic average effect. The effect of the maximum shear stress on the turbine propeller is that of the straight blade, the straight blade, the straight blade, the straight blade, and the straight blade. Therefore, the agitation process is sensitive to the shear action. Based on the conventional evaluation of the shear performance of agitator, it is necessary to consider the influence of the maximum shear stress in the mixing flow field and select the stirrer reasonably.
【作者單位】： 西北大學(xué)化工學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(11102153) 陜西省自然科學(xué)基礎(chǔ)研究計(jì)劃青年人才資助項(xiàng)目(2013JQ2001) 省級(jí)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃基金資助項(xiàng)目(S201710697020)
【分類號(hào)】：TQ051.72

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本文編號(hào)：1601060