Shafie, Sharidan (2009) Algorithm of the Effect of gjittren on free convection adjacent to a stretching sheet. Project Report. Faculty of Science, Skudai, Johor. (Unpublished)

PDF
678kB 
Abstract
gJitter characterizes a small fluctuating gravitational field brought about, among others, by crew movements and machine vibrations aboard spacecrafts or in other lowgravity environments such as the droptower and parabolic flights. Experimental studies have shown that in these lowgravity environments, gjitter can induce appreciable convective flow that can be detrimental to certain experiments such as crystal growths and solidification processes. In this research, mathematical models to study the effect of gjitter on heat and mass transfer is developed. Specific problem considered revolve around the effect of gjitter induced free convection, on the flow and heat transfer characteristics associated with a stretching vertical surface in a viscous and incompressible fluid. The velocity and temperature of the sheet are assumed to vary linearly with x, where x is the distance along the sheet. It is assumed that the gravity vector modulation is given by g *(t) = go [1+Îµ cos (Ï€ Ï‰ t)]k , and the resulting nonsimilar boundary layer equations are solved numerically using an implicit finitedifference scheme. Results presented include fluid flow and heat transfer characteristics for various parametric physical conditions such as the amplitude of modulation, frequency of the singleharmonic component of oscillation, buoyancy force parameter and Prandtl number on the skin friction and Nusselt number. This theoretical investigation is useful in providing estimates of the tolerable effects of gjitter which will help to ensure the design of successful experiments in lowgravity environments.
Item Type:  Monograph (Project Report) 

Subjects:  Q Science > Q Science (General) 
Divisions:  Science 
ID Code:  9706 
Deposited By:  Noor Aklima Harun 
Deposited On:  22 Jun 2010 02:56 
Last Modified:  22 Jun 2010 02:56 
Repository Staff Only: item control page