Results 161 to 170 of about 52,041 (207)
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Close-contact melting of shear-thinning fluids
Journal of Fluid Mechanics, 2023This study aims at establishing a model for close-contact melting (CCM) of shear-thinning fluids. We presented a theoretical framework for predicting the variation of liquid melt film thickness and motion of unmelted solid for both Carreau and power-law fluids.
Nan Hu, Li-Wu Fan
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Chaotic mixing of shear‐thinning fluids
AIChE Journal, 1994AbstractThis article investigates the effect of shear‐thinning viscosity on chaotic mixing when the kinematics first begin to deviate from Newtonian flow. Computations are done for a 2‐D, time‐periodic flow between eccentric cylinders. The effectiveness of mixing is analyzed by examining the asymptotic coverage of a passive tracer, character and ...
Thomas C. Niederkorn, Julio M. Ottino
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Lattice Boltzmann Simulation of Shear-Thinning Fluids
Journal of Statistical Physics, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Pressure-Oscillatory Defoaming for Shear-thinning Fluids
KAGAKU KOGAKU RONBUNSHU, 2007筆者らは，圧力振動場を用い，Shear-thinning性流体中の気泡上昇速度を促進させる方法を検討した．気泡が意図的に膨張・縮小するよう機械的に圧力振動させると，気泡近傍に強い局所剪断流れが生じる．その際，気泡近傍の局所剪断粘度は低下し，気泡上昇速度は促進される．この方法により，Shear-thinning性流体では，自然上昇速度と比較して，400倍を超える気泡上昇速度が得られた．一方，Newton流体では，促進効果はほとんど得られなかった．気泡近傍の剪断粘度を実験的に評価するため，ビデオとストロボスコープを用い，気泡径の時系列変化を調べた．ここで得られた剪断粘度低下から推算した促進効果は，実測値と良好に一致した．
Shuichi Iwata +3 more
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Optimal Control of Shear-Thinning Fluids
SIAM Journal on Control and Optimization, 2012The aim of this paper is to establish necessary optimality conditions for optimal control problems governed by steady, incompressible Navier--Stokes equations with shear-dependent viscosity. The main difficulty is related to the differentiability of the control-to-state mapping and is overcome by introducing a family of smooth approximate control ...
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The rise of bubbles in shear thinning viscoelastic fluids
Journal of Colloid and Interface Science, 2022Bubbles in a liquid rise under gravity and separate to the top. Bubbly liquids exist commonly in nature and play a significant role in energy-conversion, oil and chemical industries. Therefore, understanding how bubbles rise is of great importance. Rheological properties of the fluid have a strong impact on single bubble rise and have been shown to ...
Q, Chen +3 more
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Viscous fingering in a shear-thinning fluid
Physics of Fluids, 2000We study the Saffman–Taylor instability in a rectangular Hele-Shaw cell. The driven fluid is a dilute (or semidilute) polymer solution, with a viscosity that exhibits shear thinning. Other non-Newtonian properties such as elastic effects are negligible under the present experimental conditions; the system thus allows for separate investigation of the ...
Lindner, Anke +2 more
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Soft lubrication of model shear-thinning fluids
Tribology International, 2020Abstract Model non-Newtonian fluids are used to determine the influence of fluid rheology on friction between viscoelastic substrates. We uniquely designed two groups of fluids to be iso-viscous at low- and high-shear rate respectively using nanocellulose dispersions.
Xu, Yuan, Stokes, Jason R.
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Thermal convection of viscoelastic shear-thinning fluids
Fluid Dynamics Research, 2016The Rayleigh–Benard convection for non-Newtonian fluids possessing both viscoelastic and shear-thinning behaviours is examined. The Phan-Thien–Tanner (PTT) constitutive equation is implemented to model the non-Newtonian character of the fluid. It is found that while the shear-thinning and viscoelastic effects could annihilate one another for the steady
Bashar Albaalbaki +2 more
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Distributed Control for Shear-Thinning Non-Newtonian Fluids
Journal of Mathematical Fluid Mechanics, 2012zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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