Details

Autor(en) / Beteiligte

• Soboleva, E. B.

Titel

Mitigation of Rayleigh–Taylor Convection in a Porous Medium by Initial Periodic Fluctuations

Ist Teil von

• Advanced Hydrodynamics Problems in Earth Sciences, 2023, p.1-9

Ort / Verlag

Switzerland: Springer

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Numerical simulation of gravity-driven convection in a porous medium in application to geological problems is conducted. A stability of two-layered fluid system with the lower layer being a pure fluid and the upper layer being the fluid with dissolved admixture is analyzed. A growth of instability is triggered by initial periodic density fluctuations at the interface. Peculiarities of convective flows and mass transfer depending on the wave length of disturbances are investigated. As obtained, if the wave length of disturbances is of the order of average double width of convective fingers originated under random fluctuations, those disturbances can lead to mitigating of convection. In this case, the prescribed motion cannot develop freely and transit to stochastic mode, that leads to its deceleration and a decrease in convective mixing.