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Projekt Titel
Direkte numerische Simulation und Modellierung transienter Mischkonvektion in porösen Medien
Funding code
945.03-1081
Startdatum
January 1, 2025
Enddatum
December 31, 2026
Gepris ID
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Convection in porous media is an often observed phenomenon in everyday life and also an important process in industry as well. It receives increasing interests in recent years due to its significant applications in some emerging industries, e.g., long term storage of CO2 in deep saline aquifers and thermal energy storage. However, a transient mixed convection in porous media is very complicated while it may be affected by both pore-scale turbulence (due to forced convection) and macroscopic instabilities (due to natural convection). Significant simplifications and strong assumptions have been made in the macroscopic models, causing considerable model errors. In the purposed project, the mixed convection in porous media will be investigated with pore-scale resolved direct numerical simulation methods. Through our research work, we will try to find out how a single-length-scale forced convection transitions to a two-length-scale natural convection. A more accurate macroscopic model will be developed for calculating mixed convection in porous media. The developed model will be validated with our DNS results. A machine-learning method for multi-scale modeling of convection in porous media will be proposed.