Browsing by Author "Shrikantha, S.R."

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Experimental studies of flow patterns of different fluids in a partially filled rotating cylinder
(2009) Mukunda, P.G.; Shailesh, R.A.; Kiran, A.S.; Shrikantha, S.R.
An attempt has been made to investigate the various parameters affecting the fluid behaviour, partially filled in a rotating cylinder. When the cylinder is rotating at 'high' speed, a liquid forms a hollow cylinder. Different patterns are observed in the fluids for the rotatioal speeds below a critical speed. This study should give us some insight into molten metal behaviour during centrifugal casting. An extensive experimental investigation is required to obtain an appropriate functional relationship by knowing and understanding some dimensionless parameters. Here the effect of dimensionless parameters ? (which is 2 g/?2d, where g, ? and d denotes gravitational acceleration, container rotation rate and inner diameter of liquid cylinder) and G (number of times the gravity) was studied as variation of rotation speed, viscosity and aspect ratio of the mould.
Experimental studies of flow patterns of different fluids in a partially filled rotating cylinder
(Isfahan University of Technology, 2009) Mukunda, P.G.; Rao, S.; Kiran Aithal, A.S.; Shrikantha, S.R.
An attempt has been made to investigate the various parameters affecting the fluid behaviour, partially filled in a rotating cylinder. When the cylinder is rotating at 'high' speed, a liquid forms a hollow cylinder. Different patterns are observed in the fluids for the rotatioal speeds below a critical speed. This study should give us some insight into molten metal behaviour during centrifugal casting. An extensive experimental investigation is required to obtain an appropriate functional relationship by knowing and understanding some dimensionless parameters. Here the effect of dimensionless parameters ? (which is 2 g/?2d, where g, ? and d denotes gravitational acceleration, container rotation rate and inner diameter of liquid cylinder) and G (number of times the gravity) was studied as variation of rotation speed, viscosity and aspect ratio of the mould.
Influence of teeming temperature of molten tin in centrifugal casting
(2010) Mukunda, P.G.; Shrikantha, S.R.; Shailesh, A.R.; Aithal, S.K.
During centrifugal casting, when a mould is rotated at very low and very high speeds, defects are found in the final castings. Obtaining the critical speed for sound castings should not be a matter of guess or based on experience. The defects in the casting are mainly due to the behaviour of the molten metal during teeming and solidification process. The studies of melt flow in partially filled rotating cylinders have indicated many features, which were not mentioned in the literatures of centrifugal casting. Motion of molten metal at various speeds and its effect during casting are addressed in this paper. Molten tin has been taken for the experiments, and its behaviour during various rotational speeds is explained. 2010 W. S. Maney & Son Ltd.
Influence of teeming temperature of molten tin in centrifugal casting
(2010) Mukunda, P.G.; Shrikantha, S.R.; Rao, S.; Kiran Aithal, A.S.
During centrifugal casting, when a mould is rotated at very low and very high speeds, defects are found in the final castings. Obtaining the critical speed for sound castings should not be a matter of guess or based on experience. The defects in the casting are mainly due to the behaviour of the molten metal during teeming and solidification process. The studies of melt flow in partially filled rotating cylinders have indicated many features, which were not mentioned in the literatures of centrifugal casting. Motion of molten metal at various speeds and its effect during casting are addressed in this paper. Molten tin has been taken for the experiments, and its behaviour during various rotational speeds is explained. © 2010 W. S. Maney & Son Ltd.