Journal Vol – 12 No -2, January 2018

Abstract:

In the present numerical study, laminar convection over a plate in a uniform free stream is investigated when the bottom surface of the plate is heated by convection from a hot fluid. It is found that the similarity solution is possible if the convective heat transfer associated with the hot fluid on the lower surface of the plate is proportional to x^1/2. The numerical solutions thus obtained are analyzed for a range of values of the parameter characterizing the hot fluid convection process and for representative Prandtl numbers of 0.1, 0.72 and 10. The results of the present simulation are then compared with the reports published in literature and find a good agreement.

Keywords:

Boundary Layer,Convective Boundary Condition,Horizontal Plate,Matlab,Similarity Solution,

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Abstract:

A set of expressions are presented for the determination of activation energy of thermoluminescence peaks recorded with hyperbolic heating profile. Along with conventional half intensity points the peak widths at signal levels equal to 2/3 and 4/5 of peak height are used to determine the activation energy. A method of determination of order of kinetics of the peak by using its symmetry factor is also proposed. The present method is applied both to numerically computed and experimental TL peaks and encouraging results have been obtained.

Keywords:

Thermoluminescence,activation energy,order of kinetics,hyperbolic heating profile,

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Abstract:

In this paper, we have developed an inventory model for deteriorating item with permissible delay in payment. Demand function dependent on the selling price and frequency of advertisement cost. Partially backlogged shortages are allowed and backlogged rate dependent on the duration of waiting time up to arrival of next lot. The corresponding model have been formulated and solved. Three numerical examples have been considered to illustrate the model. Finally sensitivity analyses have been carried out taking one parameter at a time and other parameters as same.     

Keywords:

Inventory,deterioration,partially backlogged shortages,permissible delay in payment,

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