Analysis of Centrifugal Pump in Diffuser Vane By Using CFD
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 3, Issue 3
Abstract
pumps, CFD, flow analysis, numerical simulation, radial gab, part load performance. Introduction A centrifugal pump is dynamic machine that uses impeller to increase the pressu They are widely used for liquid tra different sectors. Their operating ran full-load down to close to the shut-off to develop a reliable machine for demanding operation, the behavior of the entire pump has to be predicted befor in actual use. This requires critical analysis complex flow in the pump which is three dimensional in nature. The through experiments or model testing to be time consuming, tedious and ex is the present day state-of-art technique analysis. In recent years, most of the using CFD as a numerical simulation analysis of centrifugal pumps. development of CFD code, one ca ISSN: 2277 Impact Factor: 1.852 International Journal of Engineering Sciences & Research Technology [1346-1353] INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY Analysis of Centrifugal Pump in Diffuser Vane By Using CFD Dr. V.R.Sivakumar*1, Mr.Satheesh Kumar2 , Jacob Mathews3 Head of the Department of Mechanical Engineering, Assistant Professor –Department of Mechanical Engineering, Thermal Engineering -Department of Mechanical Engineering vs College of engineering and technology, Coimbatore, Tamilnadu, India Abstract Flow analysis in centrifugal pumps has long been an intensive subject of research. Computational Fluid Dynamics (CFD) is the present day state-of-art technique for fluid flow analysis. It was found that non created in different parts of the pump at off-design conditions which result in the decrease in efficiency different radial gaps. The operating characteristic curves predicted by the numerical simulation were compared with the are found in good agreement. The test case consists of an enshrouded centrifugal impeller with seven blades and a radial vane diffuser with 7 vanes. A large number of measurements are available in the radial gap between the impeller and the diffuse, making this case ideal for validating numerical methods. Results of steady and unsteady calculations of the flow in the pump are compared with the experimental ones, and four different turbulent models are analyzed. The steady K-£ RNG is wall defined equation function simulation uses the frozen rotor concept, while the unsteady simulation uses a fully resolved sliding grid approach. The comparisons show that the unsteady numerical results accurately predict the unsteadiness of the flow, demonstrating the validit and applicability of that methodology for unsteady incompressible turbo machinery flow computations. The steady approach is less accurate, with an unphysical advection of the impeller wakes, but accurate enough for a crude rbulence models predict the flow at the same level of accuracy, with slightly : Centrifugal pumps, CFD, flow analysis, numerical simulation, radial gab, part load performance. is a rotos a rotating ssure of a fluid. ransportation in nge spans from head. In order or this highly of the flow in the re they are put analysis of highly turbulent and The flow analysis sting is considered xpensive. CFD hnique in fluid flow of the industries are tion tool for flow Due to the can predict the efficiency of the system as well behavior. One can find the root performance b y using CFD anal Figure 1.1 centrifugal pump with diffuser vane Many researchers have numerical simulation of centr and Ramakrishnan carried out mixed flow pump (Nsq. =46.00 point and also at part load conditions. ISSN: 2277-9655 Impact Factor: 1.852 International Journal of Engineering Sciences & Research Technology ENCES & RESEARCH Analysis of Centrifugal Pump in Diffuser Vane By Using CFD Department of Mechanical Engineering, Tamilnadu, India F
Authors and Affiliations
Dr. V. R. Sivakumar
Keywords
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