Lagrangian Particle Tracking in Velocity-Vorticity Resolved Viscous Flows by Subdomain BEM
سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 139
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شناسه ملی سند علمی:
JR_JAFM-9-3_049
تاریخ نمایه سازی: 3 بهمن 1400
چکیده مقاله:
A numerical study of particle motion in a cubic lid driven cavity is presented. As a computational tool, a boundary element based flow solver with a Lagrangian particle tracking algorithm is derived. Flow simulations were performed using an in-house boundary element based ۳D viscous flow solver. The Lagrangian particle tracking algorithm is capable of simulation of dilute suspensions of particles in viscous flows taking into account gravity, buoyancy, drag, pressure gradient and added mass. The derived algorithm is used to simulate particle behaviour in a cellular flow field and in a lid driven cavity flow. Simulations of particle movement in a cellular flow field were used to validate the algorithm. The main goal of the paper was to numerically simulate the flow behaviour of spheres of different densities and different diameters, as experimentally observed in work of Tsorng et al.The study of slightly buoyant and non-buoyant particles in a lid driven cavity was aimed at discovering cases when particles leave the primary vortex and enter into secondary vortices, a phenomenon described in the work of Tsorng et al. A parametric study of this phenomenon was preformed. The presented computational results show excellent agreement with experiments, confirming the accuracy of the developed computational method.
کلیدواژه ها:
Dispersed two phase flow ، Lagrangian particle tracking ، Cellular flow ، Lid drivencavity ، Boundary element method
نویسندگان
J. Ravnik
Faculty of Mechanical Engineering, University of Maribor, Smetanova ulica ۱۷, SI-۲۰۰۰ Maribor, Slovenia
M. Hriberšek
Faculty of Mechanical Engineering, University of Maribor, Smetanova ulica ۱۷, SI-۲۰۰۰ Maribor, Slovenia
J. Lupše
Faculty of Mechanical Engineering, University of Maribor, Smetanova ulica ۱۷, SI-۲۰۰۰ Maribor, Slovenia