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Roslinda Nazar Mihaela Jaradat Norihan M. Arifin Ioan Pop 《Central European Journal of Physics》2011,9(5):1195-1202
In this paper, the stagnation-point flow and heat transfer towards a shrinking sheet in a nanofluid is considered. The nonlinear
system of coupled partial differential equations was transformed and reduced to a nonlinear system of coupled ordinary differential
equations, which was solved numerically using the shooting method. Numerical results were obtained for the skin friction coefficient,
the local Nusselt number as well as the velocity and temperature profiles for some values of the governing parameters, namely
the nanoparticle volume fraction φ, the shrinking parameter λand the Prandtl number Pr. Three different types of nanoparticles are considered, namely Cu, Al2O3 and TiO2. It was found that nanoparticles of low thermal conductivity, TiO2, have better enhancement on heat transfer compared to nanoparticles Al2O3 and Cu. For a particular nanoparticle, increasing the volume fraction φ results in an increase of the skin friction coefficient and the heat transfer rate at the surface. It is also found that
solutions do not exist for larger shrinking rates and dual solutions exist when λ < −1.0. 相似文献
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We extend the well-known Artstein-Sontag theorem by introducing the concept of control Lyapunov function for the notion of
nonuniform in time global asymptotic stability in probability of stochastic differential system, when both the drift and diffusion
terms are affine in the control. The main results of our work enable us to derive the necessary and sufficient conditions
for feedback stabilization for affine in the control systems. 相似文献
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Fadzilah Md. Ali Roslinda Nazar Norihan Md. Arifin Ioan Pop 《Heat and Mass Transfer》2011,47(2):155-162
In this paper, the problem of steady magnetohydrodynamic boundary layer flow and heat transfer of a viscous and electrically
conducting fluid over a stretching sheet is studied. The effect of the induced magnetic field is taken into account. The transformed
ordinary differential equations are solved numerically using the finite-difference scheme known as the Keller-box method.
Numerical results are obtained for various values of the magnetic parameter, the reciprocal magnetic Prandtl number and the
Prandtl number. The effects of these parameters on the flow and heat transfer characteristics are determined and discussed
in detail. When the magnetic field is absent, the closed analytical results for the skin friction are compared with the exact
numerical results. Also the numerical results for the heat flux from the stretching surface are compared with the results
reported by other authors when the magnetic field is absent. It is found that very good agreement exists. 相似文献
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Khashi’ie Najiyah Safwa Md Arifin Norihan Pop Ioan Nazar Roslinda 《Journal of Thermal Analysis and Calorimetry》2022,147(1):567-578
Journal of Thermal Analysis and Calorimetry - The impact and capability of Cu–Al $$_2$$ O $$_3$$ /water nanoliquid as the heat transfer fluid are numerically investigated along a moving... 相似文献
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