水力噴射空氣旋流器中射——旋流耦合流場(chǎng)的模擬分析
發(fā)布時(shí)間:2019-07-04 18:21
【摘要】:水力噴射空氣旋流器(WSA)是一種新型高效的氣液傳質(zhì)設(shè)備。本文采用雷諾應(yīng)力模型和VOF模型對(duì)水力噴射空氣旋流器內(nèi)耦合場(chǎng)的流場(chǎng)分布進(jìn)行了三維數(shù)值模擬研究。模擬研究結(jié)果表明,隨著氣速的增加,耦合場(chǎng)的速度分布的對(duì)稱(chēng)性不斷減弱,且湍動(dòng)能的均值沿豎直方向的衰減速率變大。其中軸向速度沿徑向分布出現(xiàn)的最大值發(fā)生由靠近WSA的器壁附近向中心排氣管附近轉(zhuǎn)移的現(xiàn)象;徑向速度在耦合場(chǎng)中部達(dá)到最大值;切向速度沿徑向分布,普遍出現(xiàn)2個(gè)在WSA器壁附近和中心排氣管附近的極值區(qū)域。研究結(jié)果可為對(duì)WSA的深入認(rèn)識(shí)提供參考。
[Abstract]:Hydraulic jet air cyclone (WSA) is a new type of high efficiency gas-liquid mass transfer equipment. In this paper, Reynolds stress model and VOF model are used to simulate the flow field distribution of coupling field in hydraulic jet air cyclone. The simulation results show that the symmetry of the velocity distribution of the coupling field decreases with the increase of gas velocity, and the attenuation rate of the mean turbulent kinetic energy along the vertical direction increases. The maximum value of axial velocity along the radial distribution occurs from near the wall near WSA to near the central exhaust pipe; the radial velocity reaches the maximum in the middle of the coupling field; and the tangential velocity distributes along the radial direction, and two extreme regions near the WSA wall and the central exhaust pipe generally appear. The results of the study can provide a reference for the further understanding of WSA.
【作者單位】: 重慶理工大學(xué);
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(21176273)
【分類(lèi)號(hào)】:TQ051
本文編號(hào):2510120
[Abstract]:Hydraulic jet air cyclone (WSA) is a new type of high efficiency gas-liquid mass transfer equipment. In this paper, Reynolds stress model and VOF model are used to simulate the flow field distribution of coupling field in hydraulic jet air cyclone. The simulation results show that the symmetry of the velocity distribution of the coupling field decreases with the increase of gas velocity, and the attenuation rate of the mean turbulent kinetic energy along the vertical direction increases. The maximum value of axial velocity along the radial distribution occurs from near the wall near WSA to near the central exhaust pipe; the radial velocity reaches the maximum in the middle of the coupling field; and the tangential velocity distributes along the radial direction, and two extreme regions near the WSA wall and the central exhaust pipe generally appear. The results of the study can provide a reference for the further understanding of WSA.
【作者單位】: 重慶理工大學(xué);
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(21176273)
【分類(lèi)號(hào)】:TQ051
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