The Numerical Simulation And Experimental Analysis Of Inner Flow Field Of Centrifugal Pump

Centrifugal pump is widely applied equipment which needs more energy but has low efficiency. In recent years, along with the rapid development of computer technology, we can achieve internal flow field value simulation of centrifugal pump by FLUENT. It opens a new avenue mastering internal flow field of centrifugal pump and makes up for the lack of design. It has very important significance on the optimization design of the centrifugal pump、hydraulic performance improvement、improving efficiency.This paper firstly set up a3D entity model based on the Pro/E. Then the numerical simulation of the centrifugal pump for internal flow field by using the software of FLUENT can get the centrifugal pump internal flow field of velocity distribution and stress distribution of different working conditions and time. Through this, we can analyze the internal law of the centrifugal pump and calculate the performance. Based on it, we optimize RY centrifugal pump and perform the numerical simulation of the flow field under different working conditions. Through the comparison between the calculation results and experimental results, verifying the correctness and feasibility of the way to calculate internal flow of centrifugal pump. This paper mainly does the following jobs:1. Introducing current research development at home and abroad about centrifugal pump. It also introduces the development of the software on CFD and the turbulent flow numerical simulation theory based on the control equations, putting forward turbulence model of the problem and the solving methods, turbulent model post-processing and so on.2. Introducing the basic theory knowledge of computational fluid dynamics-. expounding basic characteristics of the flow of fluid and giving the basic control equations of the flow of fluid.3. Establishing the three-dimensional entity model of centrifugal pump using Pro/E4. Introducing numerical calculation of centrifugal pump based on FLUENT. We can get velocity distribution and stress distribution of different working conditions and time by performing the numerical simulation of the flow field using sliding grid technology. Through the flow field calculation results, we can get flow law.5. Based on the result of numerical simulation, we optimize RY centrifugal pump and then test its performance. Analysising forecasted results and test results to demonstrate the correctness and feasibility of the method.