Design And Flow Through CFD Analysis Of Enclosed Impeller Ashish J. Patel 1 , Bhaumik B. Patel 2 1 M.E (Machine Design) Student, Mechanical Engineering, Kalol Institute of Technology and Research Centre, Kalol, Gujarat, India 2 Assistant Professor, Mechanical Engineering Department, Kalol Institute of Technology and Research Centre, Kalol, Gujarat, India, Gujarat Technological University Abstract -- The Impeller of Centrifugal Pump is one of most Critical Component to be designed. The Flow through Centrifugal Pump impeller is three dimensional and fully turbulence model. The present work describes the design and flow through CFD analysis of enclosed impeller of the centrifugal Pump. The model of impeller was generated using SOLIDWORKS and analyzed in ANSYS (Workbench) Fluid Flow (CFX). The numerical solution of the discredited three dimensional, incompressible Navier-Stokes equations over an unstructured grid is accomplished with an ANSYS-CFX. The design of enclosed impeller is done by using various input data, the value of head is determined by theoretical as well as CFD value. The CFD analysis of Enclosed impeller has been carried out at various inlet and outlet blade angles of the impeller and number of blades of impeller to investigate the changes in head as well as efficiencies. Keywords – Impeller Design, Solid Works, CFD, Pressure Distribution, Efficiency 1. INTRODUCTION A pump is a machinery or device for raising, compressing or transferring fluid. A fluid can be gasses or any liquid. Pumps are one of the most often sold and used mechanical devices and can be found in almost every industry. Pumps alone do not create pressure; they only displace fluid, causing a flow. Adding resistance to flow causes pressure. Pumps fall into five major groups: direct lift, velocity, buoyancy and gravity pumps. A centrifugal pump is a kinetic device. Liquid entering the pump receives kinetic energy from the rotating impeller. The centrifugal action of the impeller accelerates the liquid to a high velocity, transferring mechanical (rotational) energy to the liquid. That kinetic energy is available to the fluid to accomplish work. The centrifugal pumps act as a reversed of an inward radial flow reaction turbine. Centrifugal pumps consist of a set of rotating vanes, enclosed within a housing or casing, used to impart energy to a fluid through centrifugal force. 2. OBJECTIVE To Perform Design and Flow through CFD analysis of the Enclosed impeller in Ansys software with modification in inlet and outlet blade angles of the impeller and number of blades of the impeller to investigate the changes in head as well as efficiencies. 3. LITERATURE REVIEW E.C. Bcharoudis et. al. [1] have contributed to reveal the flow mechanisms inside centrifugal impellers and studied performance by varying outlet blade angle. They observed a gain in head more than 7 % with increase in outlet blade angle from 20 degree to 45 degree. K. M. Pandey et. al. [2] have performed two-dimensional steady numerical analysis for centrifugal pumps with impeller blades 7, 8 and 9 using Ansys Fluent 6.3 software for inlet diameter 80 mm and outlet diameter 168 mm at 2500 rpm rotational speed also to investigate the changes in head as well as efficiencies with the increase of blade number. S.Rajendran et. al. [3] have performed the simulation of the flow in the impeller of a centrifugal pump. The flow pattern, pressure distribution in the blade passage, blade loading and pressure plots are discussed. 4. Design of Enclosed Impeller For design calculation, the design Parameters of CROMPTON SRAM-400 Pump are taken as follows: Table 4.1 Design Data for Pump Sr. No Parameters Value 1 Flow rate 0.5 m 3 /s 2 Head 30 m 3 Pump Speed 735 rpm 4 Gravitational Acceleration 9.81 m/s 2 5 Density of Sewage Water 1050 kg/m 3 International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181 www.ijert.org Vol. 3 Issue 7, July - 2014 IJERTV3IS071198 (This work is licensed under a Creative Commons Attribution 4.0 International License.) 1366
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Design And Flow Through CFD Analysis Of Enclosed Impeller · 2019-07-01 · Design And Flow Through CFD Analysis Of Enclosed Impeller Ashish J. Patel1, Bhaumik B. Patel2 1 M.E (Machine
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