30 research outputs found
Entropy Generation in MHD Flow of a Uniformly Stretched Vertical Permeable Surface under Oscillatory Suction Velocity
This paper reports the analytical calculation of the entropy generation due to heat and mass transfer and fluid friction in steady state of a uniformly stretched vertical permeable surface with heat and mass diffusive walls, by solving analytically the mass, momentum, species concentration and energy balance equation, using asymptotic method. The velocity, temperature and concentration profiles were reported and discussed. The influences of the chemical reaction parameter, the thermal and mass Grashof numbers, heat generation/absorption and Hartmann number on total entropy generation were investigated, reported and discussed
Two Steps Block Method for the Solution of General Second Order Initial Value Problems of Ordinary Differential Equation
In this paper, an implicit block linear multistep method for the solution of ordinary differential equation
was extended to the general form of differential equation. This method is self starting and does not
need a predictor to solve for the unknown in the corrector. The method can also be extended to
boundary value problems without additional cost. The method was found to be efficient after being
tested with numerical problems of second order
Modified Block Method for the Direct Solution of Second Order Ordinary Differential Equations
The direct solution of general second order ordinary differential equations is considered
in this paper. The method is based on the collocation and interpolation of the power series approximate solution to generate a continuous linear multistep method. We modified
the existing block method in order to accommodate the general nth order ordinary differential equation. The method was found to be efficient when tested on second order ordinary
differential equation
Four Steps Implicit Method for the Solution of General Second Order Ordinary Differential Equations
Four steps implicit scheme for the solution of second order ordinary differential equation was derived
through interpolation and collocation method. Newton polynomial approximation method was used to
generate the unknown parameters in the corrector. The method was tested with numerical examples
and it was found to be efficient in solving second order ordinary differential equations
Continuous Implicit method for the Solution of General Second Order Ordinary Differential Equations
Abstract Methods of collocation and interpolation were adopted to generate a continuous
implicit scheme for the solution of second order ordinary differential equation. Newton
polynomial approximation method was used to generate the unknown parameter in the
corrector. This enables us to solve both initial and boundary value problems
One-Step Implicit Hybrid Block Method for The Direct Solution of General Second Order Ordinary Differential Equations
A one-step implicit hybrid block solution method
for initial value problems of general second order ordinary
differential equations has been studied in this paper. The onestep
method is augmented by the inclusion of off step points to
enable the multistep procedure. This guaranteed zero stability
as well as consistency of the resulting method. The convergence
and weak stability properties of the new method have been
established. Results from the new method compared with those
obtained from existing methods show that the new method
gives better accuracy