Paper Details

New computational methods are continuously developed in order to solve problems in different engineering fiel ds.One of these fields is centrifugal pump, where the challenge is to make centrifugal pump more efficient and to reducecavitation in the pump. One of the main parts of a centrifugal pump that can be improved is the impeller. In order to optimiz ethe centrifugal pump, both experimental and numerical methods are called for. An important topic is here to perform gridsensitivity studies to make sure that the model yields mesh independent results. Another topic of interest is the choice ofturbulence model and how this choice affects the grid sensitivity. After this project we made a model that is numericallyreliable, mesh independent and fast.This thesis presents a computational study of the flow field generated in centrifugal pump and how that flow fieldconvicts through the impeller. Specifically, the effect that the flow fied acting on the impeller was studied. Data from amodern centrifugal pump manufacturer was used to design a realistic, low speed, large scale efficiency test section. Thispaper presents the results of computational simulations done in parallel with experimental simulations of the impeller flowfield.In comparisons of computational predictions with experimental data, reasonable agreement of the mean flow andgenerates cavitation in the centrifugal pump. After finding the cavitation area by numerical method, changing the angle ofthe blade or changing the number of blade the direction of the inlet and outlet flow has been changed.

Eshant S. Rami, A.M.Pathan, “NUMERICAL INVESTIGATION OF CAVITATION OF CENTRIFUGAL PUMP”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 1, Issue 12, pp. 68-72, December 2014.