New Trends in Multiscale and Multiphysics Simulation of Transport Phenomena in Novel Engineering Systems

Publish Year: 1391
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_JAFM-4-2_015

تاریخ نمایه سازی: 5 بهمن 1400

Abstract:

The paper reports on the progress made in predicting large- and small-scale single and two-phase flows with heat transfer using the CMFD code TransAT. In the multi-phase context, the code uses the Level Set approach as the “Interface Tracking Method” of reference. The solver incorporates phase-change capabilities, surface tension and triple-line dynamics models, Marangoni effects, electric and magnetic fields, and a wall micro-film sub-grid scale model for lubrication. Complex ۳D examples shown here were treated using a fully automatized version of the code, using the Immersed Surfaces Technique (IST) to map complex components into a simple rectangular Cartesian grid. It is shown that real coupled two-phase heat transfer (conjugate) problems are within reach of modern CMFD code using interface tracking, with relatively fast response times: ۳D coupled two-phase flow heat transfer can run on a simple Linux PC cluster within ۲۴ H time.

Authors

D. Lakehal

ASCOMP GmbH, Technoparkstrasse ۱, Zurich, ۸۰۰۵, Switzerland