WebJun 26, 2024 · This is particularly evident when the flow occurs in complex geometries and when major simplifications, such as lubrication approximation, can be applied. … WebMar 1, 2024 · The steady-state Couette flow of a yield-stress material obeying the Bingham-plastic constitutive equation is analyzed assuming that slip occurs when the wall shear stress exceeds a threshold value,… 10 PDF A fast numerical scheme for the Poiseuille flow in a concentric annulus R. Huilgol, G. Georgiou Physics 2024 2
Effective rheology of Bingham fluids in a rough channel
WebA number of geometries and flow conditions have been analyzed representing both attached and separated flows of Bingham and Herschel-Bulkley fluids. The presence of a yield-stress is shown to significantly impact the flow characteristics, as compared to those in the case of a Newtonian fluid, in particular in the cases where separation of the ... WebJul 12, 2024 · The Poiseuille flow of a Bingham fluid with the yield slip condition at the wall is examined. The governing equations are solved employing the accelerated augmented Lagrangian method for both the viscoplastic model and the yield slip equation. the or sound spelt a before l and ll
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WebApr 8, 2024 · This article proposes an analytical methodology for the optimal design of a magnetorheological (MR) valve constrained in a specific volume. The analytical optimization method is to identify geometric dimensions of the MR valve, and to determine whether the performance of the valve has undergone major improvement. Initially, an enhanced … WebApr 7, 2010 · Due to the complex flow geometry of the vane rheometer, relating measured quantities (torque and angular velocity) to rheological properties (yield stress and viscosity), represents a challenge. In this study, the smoothed particle hydrodynamics (SPH) method was used to simulate the flow of Bingham fluids in 2D vane and coaxial cylinders. WebApr 13, 2024 · Hematopoiesis requires a model of the yield stress fluid, and among the available yield stress fluid models for blood flow, the Herschel-Bulkley model is preferred (because Bingham, Power-law and ... the or society birmingham