http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/1568 Thu, 09 Apr 2026 03:23:46 GMT 2026-04-09T03:23:46Z http://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/537 AN EXPERIMENTAL INVESTIGATION OF POOL BOILING AT ATMOSPHERIC PRESSURE Islam, Md. Saimon; Haque, Khadija Taslima; Saha, Suman Chandra This paper deals with an experimental investigation of pool boiling of water and methanol at atmospheric pressure from small horizontal heat sources. The heat sources are inserted into the copper tube submerged in a laterally-confined, finite pool of liquid. The saturated pool boiling heat transfer characteristics and the critical heat flux (CHF) condition were determined in the experiments. In the experiment, an attempt has been made to estimate the heat flux for pool boiling of Water and Methanol at atmospheric pressure. An indoor experiment was conducted to measure (i) the heat flux of water and methanol, (ii) the temperature of the working fluids, (iii) the wall superheat temperatures, (iv) the temperatures at the bottom and side of the pot, (v) time required to be superheated at definite time intervals for a given heat input. The heat input has been varied by changing the voltage with the help of a voltage regulator. A regression analysis has been performed by using the experimental data in the correlation of Rohsenow for pool boiling. Sat, 01 Jan 2011 00:00:00 GMT http://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/537 2011-01-01T00:00:00Z http://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/536 CONVECTIVE FLOW OF MICROPOLAR FLUIDS ALONG AN INCLINED FLAT PLATE WITH VARIABLE ELECTRIC CONDUCTIVITY AND UNIFORM SURFACE HEAT FLUX Uddin, Md. Jashim Magnetohydrodynamic (MHD) twodimensional steady convective flow and heat transfer of micropolar fluids flow along an inclined flat plate with variable electric conductivity and uniform surface heat flux has been analyzed numerically in the presence of heat generation. With appropriate transformations the boundary layer partial differential equations are transformed into nonlinear ordinary differential equations. The local similarity solutions of the transformed dimensionless equations for the velocity flow, microrotation and heat transfer characteristics are assessed using Nachtsheim- Swigert shooting iteration technique along with the sixth order Runge-Kutta-Butcher initial value solver. Numerical results are presented graphically in the form of velocity, microrotation, and temperature profiles within the boundary layer for different parameters entering into the analysis. The effects of the pertinent parameters on the local skin-friction coefficient (viscous drag), plate couple stress and the rate of heat transfer (Nusselt number) are also discussed and displayed graphically Sat, 01 Jan 2011 00:00:00 GMT http://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/536 2011-01-01T00:00:00Z http://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/535 AN APPLICATION OF PDE TO PREDICT BRAIN TUMOR GROWTH USING HIGH PERFORMANCE COMPUTING SYSTEM Islam, Md. Rajibul; Alias, Norma; Ping, Siew Young This study is to predict two-dimensional brain tumors growth through parallel algorithm using the High Performance Computing System. The numerical finite-difference method is highlighted as a platform for discretization of twodimensional parabolic equations. The consequence of a type of finite difference approximation namely explicit method will be presented in this paper. The numerical solution is applied in the medical field by solving a mathematical model for the diffusion of brain tumors which is a new technique to predict brain tumor growth. A parabolic mathematical model used to describe and predict the evolution of tumor from the avascular stage to the vascular, through the angiogenic process. The parallel algorithm based on High Performance Computing (HPC) System is used to capture the growth of brain tumors cells in two-dimensional visualization. PVM (Parallel Virtual Machine) software is used as communication platform in the HPC System. The performance of the algorithm evaluated in terms of speedup, efficiency, effectiveness and temporal performance. Sat, 01 Jan 2011 00:00:00 GMT http://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/535 2011-01-01T00:00:00Z http://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/534 DISSIPATION EFFECT ON A FREE CONVECTION FLOW PAST A POROUS VERTICAL PLATE Ferdousi, Amena; Alim, M. A. A Numerical study on the effect of dissipation on a steady free convection flow through a porous vertical plate is made. The relevant non-leaner boundary equations are made dimensionless using specific non-dimensional variables. The corresponding non-similar partial differential equations are solved using implicit finite difference method with Keller-Box scheme. The results are then presented graphically and discussed thereafter. Sat, 01 Jan 2011 00:00:00 GMT http://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/534 2011-01-01T00:00:00Z