Numerical simulation of particle dispersion using POD based dynamical systems
This paper concerns the numerical modelling of heavy particle motion in a turbulent flow.Instantaneous fluid velocity is simulated by low-order dynamical systems based on Proper Orthogonal Decomposition (POD).The POD basis was built using snapshots obtained from Direct Numerical Simulation.Three dynamical systems were tested.These systems were assessed by comparing the resulting fluid velocity statistics with the DNS data.Inertial particles,which were one-way coupled to the velocity field,were introduced into the flow domain.In the dispersion study,where the particles were allowed to collide elastically with the walls,the particle number density profiles and velocity statistics were compared to the available DNS benchmark.In the case of particle wall separation,the results for deposition velocity were evaluated with experimental data.The characteristic features of the POD-based simulations of dispersed turbulent flows are shown,potential areas of application are suggested,and the limitations of the approach are discussed.
Turbulent flows reduced-order models particle dispersion wall deposition
C. Béghein C. Allery M. Waclawczyk J. Pozorski
LaSIE, FRE-CNRS 3474, University of La Rochelle, France Chair of Fluid Dynamics, TU Darmstadt, Germany Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Gdansk, Poland
国际会议
The 8th International Conference of Computational Fluid Dynamics, (ICCFD8)(第八届国际计算流体力学会议)
成都
英文
1-11
2014-07-25（万方平台首次上网日期，不代表论文的发表时间）