Computation of pressure drop for dilute gas-solid suspension across thin and thick orifices

作     者：Santosh Kumar Senapati Sukanta Kumar Dash Santosh Kumar Senapati;Sukanta Kumar Dash

作者机构：Department of Mechanical EngineeringIndian Institute of Technology KharagpurWest Bengal 721302India 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2021年第19卷第2期

页      面：209-221页

核心收录：

学科分类：080704[工学-流体机械及工程] 0817[工学-化学工程与技术] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：Dilute phase flow Gas-solid flow Thin and thick orifice Vertically downward flow Pressure drop 

摘      要：The present work deals with the computation of the gas-solid two-phase flow pressure drop across thin and thick orifices for a vertically downward flow configuration at the higher limits of a dilute phase flow situation(0.01≤αs,in≤0.10).The Eulerian-Eulerian(two-fluid)model has been used in conjunction with the kinetic theory of granular flow with a four-way coupling *** validation of the solution process has been performed by comparing the computational result with the existing experimental *** is observed that the two-phase flow pressure drop across the orifice increases with an increase in the thickness of the orifice,and the effect is more prominent at higher solid *** pressure drop is found to increase with an increase in the solid volume *** increase in the Reynolds number or the area ratio increases the pressure *** increase in the size of the particles reduces the pressure drop across the orifice at both small and relatively large solid volume ***,a two-phase multiplier has been proposed in terms of the relevant parameters,which can be useful to evaluate the gas-solid two-phase flow pressure drop across the orifice and can subsequently help to improve the system performance.