Topic
Hele-Shaw flow
About: Hele-Shaw flow is a research topic. Over the lifetime, 5451 publications have been published within this topic receiving 151320 citations.
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TL;DR: In this article, the effects of buoyancy on the stability and morphology of Taylor-Couette flow have been analyzed using a hybrid Chebyshev collocation/Fourier spectral method.
Abstract: Numerical simulations of the effects of buoyancy on the stability and morphology of Taylor–Couette flow have been conducted. The three-dimensional equations of motion are discretized using a hybrid Chebyshev collocation/Fourier spectral method. The problem geometry consists of an air-filled vertical annulus with radius ratio, η=ri/ro=0.5 (where ri and ro are the inner and outer radii, respectively), and aspect ratio, Γ=L/(ro−ri)=10 (where L is the height of the annulus). The flow is generated by combined heating and rotation of the inner cylinder. Results for various values of the Reynolds number, Re, and Grashof number, Gr, show several bifurcations of the system. The most notable change in flow structure with increasing rotational effects is the onset of spiral flow in certain parameter ranges. Compared to existing analytical and experimental results, the current numerical results show good agreement.
44 citations
TL;DR: In this article, a fictitious domain (FD) technique is used for flow calculations inside closed geometries and for compressible flow, which is an interesting method of flow calculation for domains where mesh generation is not straightforward.
44 citations
44 citations
TL;DR: In this paper, a novel Hele-Shaw cell design for accurate experiments in liquid-liquid systems with and without chemical reactions is presented, which allows the formation of a stably pinned, plane liquid and liquid interface in less than one second with a minimum shear flow.
44 citations
TL;DR: In this article, numerical simulations of pneumatic conveying in pipes of circular cross-section are performed using an Euler-Lagrange approach relying on the large-eddy simulation technique for the fluid flow and a particle tracking scheme accounting for all relevant elementary processes (particle rotation, transverse lift forces, inter-particle collisions, particle-wall collisions with smooth and rough walls, coupling between phases) several cases are analyzed in detail to elucidate the origin of secondary flow structures in the pipe crosssection.
44 citations