A cost-effective search of collision pairs in Lagrangian particle tracking method

Jian Hung Lin, Keh Chin Chang

研究成果: Paper同行評審

摘要

In the simulation of particle-laden flows, in which the interparticle collisions have to be considered, using the Eulerian- Lagrangian approach, it is agreed that the search of collision pairs based on the deterministic particle tracking method together with the binary-collision, hard-sphere model is a time consuming job in the computational procedure particularly for the flow laden with a remarkably high number density of particles. A cost-effective algorithm for the particle tracking processes which include solving the equations of motion, searching the collision pairs, and updating the list of neighboring particles' indices is developed. It is demonstrated in the turbulent, fully developed, particle-laden channel flows that the computational expenditure required for completing the particle tracking processes in a given Lagrangian time step can be optimally made with an approximately linear proportionally to the total number of particles ( NPT ) by setting the number of Lagrangian cells ( Ncell ) for computation in accordance with the criterion of NPT / Ncell = O (100).

原文English
出版狀態Published - 2015
事件ASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015 - Seoul, Korea, Republic of
持續時間: 2015 七月 262015 七月 31

Other

OtherASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015
國家Korea, Republic of
城市Seoul
期間15-07-2615-07-31

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

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