標題: Diffuse-interface approach to rotating Hele-Shaw flows
作者: Chen, Ching-Yao
Huang, Yu-Sheng
Miranda, Jose A.
機械工程學系
Department of Mechanical Engineering
公開日期: 5-十月-2011
摘要: When two fluids of different densities move in a rotating Hele-Shaw cell, the interface between them becomes centrifugally unstable and deforms. Depending on the viscosity contrast of the system, distinct types of complex patterns arise at the fluid-fluid boundary. Deformations can also induce the emergence of interfacial singularities and topological changes such as droplet pinch-off and self-intersection. We present numerical simulations based on a diffuse-interface model for this particular two-phase displacement that capture a variety of pattern-forming behaviors. This is implemented by employing a Boussinesq Hele-Shaw-Cahn-Hilliard approach, considering the whole range of possible values for the viscosity contrast, and by including inertial effects due to the Coriolis force. The role played by these two physical contributions on the development of interface singularities is illustrated and discussed.
URI: http://dx.doi.org/10.1103/PhysRevE.84.046302
http://hdl.handle.net/11536/14745
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.84.046302
期刊: PHYSICAL REVIEW E
Volume: 84
Issue: 4
起始頁: 0
結束頁: 0
顯示於類別:期刊論文


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