雙螺桿反應(yīng)器組合螺桿的三維流場(chǎng)數(shù)值模擬

【英文篇名】 Numerical simulation of 3-D flow characteristics in twin screw extruders with combined screws
【作者】 荊珂;
【英文作者】 JING Ke （Liaoning Shihua University; Fushun 113001; China）;
【作者單位】 遼寧石油化工大學(xué);
【文獻(xiàn)出處】 機(jī)械設(shè)計(jì)與制造 , Machinery Design & Manufacture, 編輯部郵箱 2008年 05期 
期刊榮譽(yù)：中文核心期刊要目總覽  ASPT來(lái)源刊  中國(guó)期刊方陣  CJFD收錄刊
【中文關(guān)鍵詞】 螺桿反應(yīng)器; 組合螺桿; 常規(guī)螺紋元件; 計(jì)算機(jī)模擬;
【英文關(guān)鍵詞】 Screw reactor; Combined screws; Conveying screws; Computer simulation;
【摘要】 利用計(jì)算流體力學(xué)法(CFD),對(duì)聚合物熔體在嚙合盤(pán)和螺紋元件的組合螺桿反應(yīng)器中的流動(dòng)規(guī)律進(jìn)行了數(shù)值模擬,并和雙螺桿常規(guī)螺紋元件反應(yīng)器進(jìn)行了對(duì)比分析。計(jì)算結(jié)果表明,雖然組合螺桿反應(yīng)器的物料輸送能力小于常規(guī)螺紋元件反應(yīng)器,但組合螺桿的分布性混合和分散性混合能力遠(yuǎn)好于常規(guī)螺紋元件。
【英文摘要】 Based on Computational Fluid Dynamics method,the polymer melt flow in twin screw extruder with combined conveying screws and kneading blocks. At same time,the flow characteristics of conveying screws are compared with those of combined screws. The results show that combined screws have relatively small pumping capability than conveying screws,but the dispersive and distributive mixing capabilities of combined screws are more efficiency than those of conveying screws.
【DOI】 CNKI:SUN:JSYZ.0.2008-05-040
【分類號(hào)】 TH131.3
【正文快照】 目前,對(duì)于雙螺桿擠出特性的研究廣泛集中在單一螺桿的擠出和混合段[1～4]。然而,在實(shí)際生產(chǎn)中,單獨(dú)使用一種螺紋的螺桿很難滿足實(shí)際的生產(chǎn)需要,經(jīng)常采用兩種、三種或更多不同種類的元件的組合,用有限數(shù)量和類型的螺桿元件進(jìn)行多種排列組合,具有很大的適應(yīng)性[3]。由于組合式雙螺