000			01711nam a22001697a 4500
082			_a671.3 _bC512M
100			_aChawla, Oaj _926254
245			_aModelling of shrinkage induced flow during the Solidification of a pure material _cby Oaj Chawla
260			_aIIT Jodhpur _bDepartment of Mechanical Engineering _c2018
300			_axvi,49p. _bHB
520			_aA new volume fraction formulation based fixed grid approach is developed for the numerical solu-tion of phase change problems. Instead of the traditional energy conservation equation where density wasconstant, a revised energy conservation equation is formulated where density varies with phase change. Avolume fraction updating scheme is proposed which is capable of evaluating the solid and liquid volumefractions during solidification and melting process. For the analysis, a two-dimensional rectangular cavitywith the riser is considered and cooling initiates from the bottom surface. Comparative analysis is carriedout for different aspect ratio of the cavity for the following case:- interaction between the shrinkage-inducedfluid flow and the natural convection due to temperature gradient. A comparison is also made by solvingthe system of governing equations using SIMPLE and SIMPLER algorithm. The results obtained via thesetwo algorithms are analyzed. A particular attention was given to the implementation of pressure boundarycondition at the top face of the riser which is connected to a source filled with molten metal.
650			_a Solidification of a pure material _926255
650			_aMTech Theses _926256
650			_aDepartment of Mechanical Engineering _926257
700			_aChakraborty, Prodyut Ranjan _926258
942			_cTH
999			_c14717 _d14717