Results 271 to 280 of about 674,301 (337)
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Nonlinear Analysis: Theory, Methods & Applications, 1985
The paper is concerned with initial boundary value problems for the scalar equation \(u_ t(x,t)+A(u)(x,t)=v(t)\phi (x)\) in \(\Omega\) x(0,T)\(\subset {\mathbb{R}}^ 4,\) where \(A(w)=-\nabla \cdot (| \nabla w|^{p-2}\cdot \nabla w)\), \(\phi\) is given, and v is an L 2-control that is sought to minimize \[ J(v)=\int_{\Omega}| u(\cdot,T)- z(\cdot)| \quad
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The paper is concerned with initial boundary value problems for the scalar equation \(u_ t(x,t)+A(u)(x,t)=v(t)\phi (x)\) in \(\Omega\) x(0,T)\(\subset {\mathbb{R}}^ 4,\) where \(A(w)=-\nabla \cdot (| \nabla w|^{p-2}\cdot \nabla w)\), \(\phi\) is given, and v is an L 2-control that is sought to minimize \[ J(v)=\int_{\Omega}| u(\cdot,T)- z(\cdot)| \quad
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Solution of Unsteady Flow of Power Law Fluids
AIAA Journal, 1972The experimental results have verified the linear behavior of the intensity of Raman scattered light as a function of specie concentration. It can be concluded that the technique is capable of identifying and measuring concentrations of individual gaseous species in a mixture during a single 10-nanosec sampling time.
Chen, Tommy Y. W., Wollersheim, David E.
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Interfacial pattern formation in confined power-law fluids
Physical Review E, 2014The interfacial pattern formation problem in an injection-driven radial Hele-Shaw flow is studied for the situation in which a Newtonian fluid of negligible viscosity displaces a viscous non-Newtonian power-law fluid. By utilizing a Darcy-law-like formulation, we tackle the fluid-fluid interface evolution problem perturbatively, and we derive second ...
Rodolfo, Brandão +2 more
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Marangoni convection of power law fluids driven by power-law temperature gradient
Journal of the Franklin Institute, 2012zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zheng, Liancun +2 more
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Withdrawal of power law fluid films
Chemical Engineering Science, 1970Abstract The thickness of a layer of a power law fluid on a sheet, which is withdrawn from a bath, is determined for the three regimes of withdrawal conditions. The flux in viscous withdrawal is, like for a newtonian liquid, lower than the maximum possible flux on a sheet moving upwards with a certain velocity.
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Consistometers rheometry of power-law viscous fluids
Journal of Non-Newtonian Fluid Mechanics, 2005This work provides a one-dimensional analytical theory for straight and axisymmetric consistometers, and helps with their use as rheometers. It is shown that these very economical and easy-to-use instruments provide an accurate characterisation of the rheological behaviour of shear-thinning, shear thickening and other materials of high apparent ...
J.-M. Piau, K. Debiane
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Boundary-layer analysis of power-law fluids
Korean Journal of Chemical Engineering, 1989An exact numerical solution to the 2-D(Two-Dimensional) laminar boundary-layer equations of power-law non-newtonian fluids is obtained using a finite difference technique. No limitation has been imposed on the flow behavior index(n) or generalized Prandli number As a test case, velocity and temperature fields around a circular cylinder in crossflow ...
Byung Kyu Kim, Hak Sung Lee
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Power law fluid flow over spheroidal particles
Industrial & Engineering Chemistry Research, 1994The equations of motion have been solved numerically for the incompressible power law fluid flow past spherical and spheroidal solid particles. The finite element technique has been employed to obtain the velocity and pressure fields prevailing around a particle. These have been further processed to evaluate the individual contributions of pressure and
Anubhav Tripathi +2 more
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Power‐law fluids flow through multiparticle system
The Canadian Journal of Chemical Engineering, 1968AbstractA study on the flow of power‐law fluids through a multi‐particle system including both fixed bed and fluidized bed is presented. Equations for the pressure drop, the minimum fluidization velocity, and the bed expansion are obtained by extending the Blake‐Kozeny's equation for the pressure drop through packed beds to power‐law fluids.
Y. H. Yu, C. Y. Wen, R. C. Bailie
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Convective wall plume in power-law fluids
International Journal of Heat and Mass Transfer, 1993Abstract This paper considers the steady-state free convection flow arising from a line thermal source positioned at the leading edge of a vertical adiabatic surface embedded in polymeric fluids. The wall plume depends on two parameters : the index of the power-law fluid (n) and the generalized Prandtl number (Pr).
Ioan Pop +2 more
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