{"title":"Dynamics of a Vapour Bubble inside a Vertical Rigid Cylinder in the Absence of Buoyancy Forces","authors":"S. Mehran, S. Rouhi, F.Rouzbahani, E. Haghgoo","country":null,"institution":"","volume":39,"journal":"International Journal of Mechanical and Mechatronics Engineering","pagesStart":304,"pagesEnd":310,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/2236","abstract":"In this paper, growth and collapse of a vapour bubble\r\ngenerated due to a local energy input inside a rigid cylinder and in\r\nthe absence of buoyancy forces is investigated using Boundary\r\nIntegral Equation Method and Finite Difference Method .The fluid is\r\ntreated as potential flow and Boundary Integral Equation Method is\r\nused to solve Laplace-s equation for velocity potential. Different\r\nratios of the diameter of the rigid cylinder to the maximum radius of\r\nthe bubble are considered. Results show that during the collapse\r\nphase of the bubble inside a vertical rigid cylinder, two liquid micro\r\njets are developed on the top and bottom sides of the vapour bubble\r\nand are directed inward. It is found that by increasing the ratio of the\r\ncylinder diameter to the maximum radius of the bubble, the rate of\r\nthe growth and collapse phases of the bubble increases and the life\r\ntime of the bubble decreases.","references":null,"publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 39, 2010"}