单喷雾射流在受限空间内的错流混合(英文)

作     者：孙慧娟 白博峰 严俊杰 张海滨 

作者机构：State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University 

基　　金：Supported by the National Natural Science Foundation of China(50823002) 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2013年第21卷第1期

页      码：14-24页

摘      要：In order to achieve uniform mixing between spray droplets and crossflow, cold-model experiment of a hollow-cone water spray in an air crossflow is investigated via a numerical simulation. The simulation cases are designed by using the orthogonal design method. The Eulerian-Lagrangian formulation is employed for modeling the droplets-crossflow two-phase flow while the realizable k-ε turbulence model is used to describe the turbulence. A new index, mixedness quality, is proposed to assess the overall mixing of the droplets in the crossflow. The simulation results demonstrate that the counter-rotating vortex pair (CVP) imposes a more significant impact on the spatial distribution than on the size distribution of the droplets. Pairs of CVP with smaller scales are preferable for achieving a better mixing. The influencing factors are listed in the following order in terms of the degree of their impact from the greatest to the least: the Sauter diameter of the initial droplets, the mixing tube diameter, the spray angle, the velocity of the inlet crossflow, and the vertical velocity of the initial droplets. A moderate droplet diameter, a smaller tube diameter, a moderate spray angle, a greater crossflow velocity and a moderate vertical velocity of the droplet are favorable for achieving a higher mixedness quality of the jet spray in a confined crossflow.

主 题 词：喷雾混合 横流 液滴直径 垂直速度 承压 数值模拟 正交设计方法 均匀混合 

学科分类：0710[理学-生物科学类] 0830[工学-生物工程类] 081704[081704] 080703[080703] 0817[工学-轻工类] 08[工学] 0807[工学-电子信息类] 081701[081701] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1004-9541(13)60436-X

馆 藏 号：203242402...