## What is/are Viscoplastic Fluids?

Viscoplastic Fluids - Turbulent flows of viscoplastic fluids at high Reynolds numbers have been investigated recently with direct numerical simulations (DNS) but experimental results have been limited.^{[1]}This paper presents a series of experiments focused on the displacement of viscoplastic fluids by various Newtonian and non-Newtonian fluids from a long horizontal, eccentric annulus.

^{[2]}A mathematical model of the process of degassing of nonlinear viscoplastic fluids in a cylindrical hydrocyclone is developed, taking account of inertial and Coriolis forces and virtual mass of the fluid.

^{[3]}The nanofluids were either pseudoplastic or viscoplastic fluids.

^{[4]}We present an assessment of viscosity regularization (VR) in predicting transient flows of viscoplastic fluids (VPF).

^{[5]}While Oldroyd’s name will forever be linked with the study of elastic fluids, the purpose of the present paper is to offer a modern perspective on a number of Oldroyd’s papers on viscoplastic fluids from 1947–1951 [1] , [2] , [3] , [4] , [5] , [6] , [7] , [8].

^{[6]}Converging flows of viscoplastic fluids, driven steadily through wedges and axisymmetric cones, are studied analytically and numerically.

^{[7]}Viscoplastic fluids can hold bubbles/particles stationary by balancing the buoyancy stress with the yield stress – the key parameter here is the yield number $Y$, the ratio of the yield stress to the buoyancy stress.

^{[8]}Four aqueous solutions of Carbopol ® 940 with different rheological parameters were used as viscoplastic fluids.

^{[9]}We discuss how our vibrated-drop experiment offers a new and powerful approach to probing the yield transition in elastoviscoplastic fluids.

^{[10]}The present analysis will be beneficial for efficient design of flow channels dealing with viscoplastic fluids in real life applications.

^{[11]}This thesis presents a comprehensive, yet practical, two-dimensional model for the displacement of viscoplastic fluids in eccentric annuli in laminar, turbulent and mixed flow regimes.

^{[12]}Elastoviscoplastic fluids are a class of yield-stress fluids that behave like neoHookean (or viscoelastic) solids when the imposed stress is less than the yield stress whereas after yielding, their behaviour is described by a viscoplastic fluid with an additional elastic history.

^{[13]}The critical value of the perturbation wave number for pseudo- and viscoplastic fluids depends only on the angle of inclination of the vibration axis.

^{[14]}In this paper, a two-dimensional double diffusive natural convection in a porous cavity filled with viscoplastic fluids is simulated.

^{[15]}We present a methodology for simulating three-dimensional flow of incompressible viscoplastic fluids modelled by generalised Newtonian rheological equations.

^{[16]}In many cases they are known as viscoplastic fluids (VPFs).

^{[17]}The main purpose of this work is to study the effects of flow on the Herschel–Bulkley number (HB), a parameter that should account for fluid viscoplasticity, in the optimal designs of elliptical section tubes subjected to forced convection of viscoplastic fluids.

^{[18]}We present a methodology for simulating three-dimensional flow of incompressible viscoplastic fluids modelled by generalised Newtonian rheological equations in non-trivial domains.

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## Incompressible Viscoplastic Fluids

We present a methodology for simulating three-dimensional flow of incompressible viscoplastic fluids modelled by generalised Newtonian rheological equations.^{[1]}We present a methodology for simulating three-dimensional flow of incompressible viscoplastic fluids modelled by generalised Newtonian rheological equations in non-trivial domains.

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## viscoplastic fluids modelled

We present a methodology for simulating three-dimensional flow of incompressible viscoplastic fluids modelled by generalised Newtonian rheological equations.^{[1]}We present a methodology for simulating three-dimensional flow of incompressible viscoplastic fluids modelled by generalised Newtonian rheological equations in non-trivial domains.

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