نتایج جستجو برای: local nusselt number

تعداد نتایج: 1631913  

Dariush Bastani Iraj Goodarznia, Mohammad Memari

The aim of this paper is to study the local Nusselt number of the symmetrical liquid-liquid jets emitting from a nozzle. Equations obtained from theoretical works are arranged in the form of a computerized model. The validity of this model was tested by the data from an experimental paper [1]. After few adjustments the model predicted the experimental data with a reasonable accuracy. Making...

Journal: :International Journal of Heat and Mass Transfer 2015

Journal: :journal of particle science and technology 0
aboutaleb ghadami jadval ghadam department of chemical engineering, yasooj branch, islamic azad university, yasooj, iran abed moradi young researchers club, yasooj branch, islamic azad university, yasooj, iran

this article deals with the study of the two-dimensional mixed convection magnetohydrodynamic (mhd) boundary layer of stagnation-point flow over a stretching vertical plate in porous medium filled with a nanofluid. the model used for the nanofluid incorporates the effects of brownian motion and thermophoresis in the presence of thermal radiation. the skin-friction coefficient, nusselt number an...

Journal: :journal of chemical and petroleum engineering 2011
mohammad memari dariush bastani iraj goodarznia

the aim of this paper is to study the local nusselt number of the symmetrical liquid-liquid jets emitting from a nozzle. equations obtained from theoretical works are arranged in the form of a computerized model. the validity of this model was tested by the data from an experimental paper [1]. after few adjustments the model predicted the experimental data with a reasonable accuracy. making sur...

2010
Mostafa Mahmoud Shimaa Waheed Cristian Toma

A theoretical analysis is performed to study the flow and heat transfer characteristics of magnetohydrodynamic mixed convection flow of a micropolar fluid past a stretching surface with slip velocity at the surface and heat generation absorption . The transformed equations solved numerically using the Chebyshev spectral method. Numerical results for the velocity, the angular velocity, and the t...

This article deals with the study of the two-dimensional mixed convection magnetohydrodynamic (MHD) boundary layer of stagnation-point flow over a stretching vertical plate in porous medium filled with a nanofluid. The model used for the nanofluid incorporates the effects of Brownian motion and thermophoresis in the presence of thermal radiation. The skin-friction coefficient, Nusselt number an...

Journal: :مکانیک سازه ها و شاره ها 0
محسن نظری استادیار دانشکده مهندسی مکانیک محمد حسن کیهانی دانشگاه شاهرود حسنی شکری دانشگاه شاهرود

in this paper, two dimensional natural convection heat transfer in non-square cavities such as triangle, trapezoid, quadrant-circle and semi-circular are investigated via lattice boltzmann method. the prandtl number is taken as 0.71 that corresponds to that of air. the results show that, when the flow pattern consists of two rotating cell, there is a extremum point in the variations of the loca...

2015
Ching-Yang Cheng

This work studies the free convection heat transfer from a non-isothermal permeable cone with suction and temperature-dependent viscosity. A suitable coordinate transformation is used to transform the governing equations into nonsimilar boundary layer solutions, and the cubic spline collocation method is then employed to solve the obtained governing equations. The local Nusselt number is presen...

2012
Hema Sundar Raju

Laminar natural-convective heat transfer from a horizontal cylinder is studied by solving the Navier-Stokes and energy equations using higher order compact scheme in cylindrical polar coordinates. Results are obtained for Rayleigh numbers of 1, 10, 100 and 1000 for a Prandtl number of 0.7. The local Nusselt number and mean Nusselt number are calculated and compared with available experimental a...

2013
A. Vanav Kumar M. Kaliyappan

In the present investigation heat transfer character due to viscous dissipation and magnetic field applied to unsteady boundary layer fluid flow past a stretching sheet is investigated. The equations governing the unsteady boundary layer fluid flow are constructed and non-dimensionalized. The non-dimensional equations are discretized using implicit finite difference method of Crank-Nicolson typ...

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