The Experts below are selected from a list of 306 Experts worldwide ranked by ideXlab platform
J Sheelafrancisca - One of the best experts on this subject based on the ideXlab platform.
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viscous dissipation effects of power law fluid flow within Parallel Plates with constant heat fluxes
Journal of Non-newtonian Fluid Mechanics, 2010Co-Authors: J Sheelafrancisca, Yew Mun HungAbstract:Abstract Both hydro-dynamically and thermally fully developed laminar heat transfer of non-Newtonian fluids between fixed Parallel Plates has been analyzed taking into account the effect of viscous dissipation of the flowing fluid. Thermal boundary condition considered is that both the Plates kept at different constant heat fluxes. The energy equation, and in turn the Nusselt number, were solved analytically in terms of Brinkman number and power-law index. The findings show that the heat transfer depends on the power-law index of the flowing fluid. Pseudo-plastic and dilatant fluids manifest themselves differently in the heat transfer characteristics under the influence of viscous dissipation. Under certain conditions, the viscous dissipation effects on heat transfer between Parallel Plates are significant and should not be neglected.
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viscous dissipation effects on Parallel Plates with constant heat flux boundary conditions
International Communications in Heat and Mass Transfer, 2009Co-Authors: J SheelafranciscaAbstract:This paper investigates basic analytical expressions for Nusselt number with the effect of viscous dissipation on the heat transfer between infinite fixed Parallel Plates, where the focus is on hydro-dynamically and thermally fully developed flow of a Newtonian fluid with constant properties, neglecting the axial heat conduction. Thermal boundary conditions considered are: both the Plates kept at different constant heat fluxes, both the Plates kept at equal constant heat fluxes, and one plate insulated. From the analysis, new expressions for Nusselt numbers have been found, as a function of various definitions of the Brinkman number.
Robert A Van Gorder - One of the best experts on this subject based on the ideXlab platform.
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analytical solution for the unsteady mhd flow of a viscous fluid between moving Parallel Plates
Communications in Nonlinear Science and Numerical Simulation, 2011Co-Authors: Erik Sweet, K Vajravelu, Robert A Van GorderAbstract:Abstract Two-dimensional unsteady MHD flow of a viscous fluid between two moving Parallel Plates is considered. We allow the Plates to move together as well as apart: When the Plates move together it corresponds to squeezing flow problem. The governing Navier–Stokes equations for the flow are reduced to a fourth order nonlinear ODE and analytical solutions are obtained for the ODE via the homotopy analysis method. We show that the flow is strongly influenced by the strength of the magnetic field and the density of the fluid. Furthermore, an error analysis for the obtained solutions is provided.
Xu Mingyu - One of the best experts on this subject based on the ideXlab platform.
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unsteady flows of a generalized second grade fluid with the fractional derivative model between two Parallel Plates
Acta Mechanica Sinica, 2004Co-Authors: Tan Wenchang, Xu MingyuAbstract:The fractional calculus approach in the constitutive relationship model of a generalized second grade fluid is introduced. Exact analytical solutions are obtained for a class of unsteady flows for the generalized second grade fluid with the fractional derivative model between two Parallel Plates by using the Laplace transform and Fourier transform for fractional calculus. The unsteady flows are generated by the impulsive motion or periodic oscillation of one of the Plates. In addition, the solutions of the shear stresses at the Plates are also determined.
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a note on unsteady flows of a viscoelastic fluid with the fractional maxwell model between two Parallel Plates
International Journal of Non-linear Mechanics, 2003Co-Authors: Tan Wenchang, Pan Wenxiao, Xu MingyuAbstract:Abstract The fractional calculus approach in the constitutive relationship model of viscoelastic fluid is introduced. A generalized Maxwell model with the fractional calculus was considered. Exact solutions of some unsteady flows of a viscoelastic fluid between two Parallel Plates are obtained by using the theory of Laplace transform and Fourier transform for fractional calculus. The flows generated by impulsively started motions of one of the Plates are examined. The flows generated by periodic oscillations of one of the Plates are also studied.
Abiodun O Ajibade - One of the best experts on this subject based on the ideXlab platform.
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effect of viscous dissipation on natural convection flow between vertical Parallel Plates with time periodic boundary conditions
Communications in Nonlinear Science and Numerical Simulation, 2012Co-Authors: Abiodun O AjibadeAbstract:This article investigates the natural convection flow of viscous incompressible fluid in a channel formed by two infinite vertical Parallel Plates. Fully developed laminar flow is considered in a vertical channel with steady-periodic temperature regime on the boundaries. The effect of internal heating by viscous dissipation is taken into consideration. Separating the velocity and temperature fields into steady and periodic parts, the resulting second order ordinary differential equations are solved to obtain the expressions for velocity, and temperature. The amplitudes and phases of temperature and velocity are also obtained as well as the rate of heat transfer and the skin friction on the Plates. In presence of viscous dissipation, fluids of relatively small Prandtl number has higher temperature than the channel Plates and as such, heat is being transferred from the fluid to the plate.
M Sheikholeslami - One of the best experts on this subject based on the ideXlab platform.
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steady nanofluid flow between Parallel Plates considering thermophoresis and brownian effects
Journal of King Saud University - Science, 2016Co-Authors: M Sheikholeslami, M M Rashidi, Dhafer Al M Saad, F Firouzi, Houman B Rokni, G DomairryAbstract:Abstract In this article, heat and mass transfer behavior of steady nanofluid flow between Parallel Plates in the presence of uniform magnetic field is studied. The important effect of Brownian motion and thermophoresis has been included in the model of nanofluid. The governing equations are solved via the Differential Transformation Method. The validity of this method was verified by comparison of previous work which is done for viscous fluid. The analysis is carried out for different parameters namely: viscosity parameter, Magnetic parameter, thermophoretic parameter and Brownian parameter. Results reveal that skin friction coefficient enhances with rise of viscosity and Magnetic parameters. Also it can be found that Nusselt number augments with an increase of viscosity parameters but it decreases with augment of Magnetic parameter, thermophoretic parameter and Brownian parameter.
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heat transfer of cu water nanofluid flow between Parallel Plates
Powder Technology, 2013Co-Authors: M Sheikholeslami, D D GanjiAbstract:Heat transfer of a nanofluid flow which is squeezed between Parallel Plates is investigated analytically using homotopy perturbation method (HPM). Copper as nanoparticle with water as its base fluid has been considered. The effective thermal conductivity and viscosity of nanofluid are calculated by the Maxwell–Garnetts (MG) and Brinkman models, respectively. This investigation is compared with other numerical methods and they were found to be in excellent agreement. The effects of the squeeze number, the nanofluid volume fraction and Eckert number and δ on Nusselt number are investigated. The results show that Nusselt number has direct relationship with nanoparticle volume fraction, δ, the squeeze number and Eckert number when two Plates are separated but it has reverse relationship with the squeeze number when two Plates are squeezed.
