Design and Optimization of a Centrifugal Pump for Slurry Transport Using the Response Surface Method

Abstract

Since centrifugal pumps consume a mammoth amount of energy in various industrial applications, their design and optimization are highly relevant to saving maximum energy and increasing the system’s efficiency. In the current investigation, a centrifugal pump has been designed and optimized. The study has been carried out for the specific application of transportation of slurry at a flow rate of m3/hr to a head of 20 m. For the optimization process, a multi-objective genetic algorithm (MOGA) and response surface methodology (RSM) have been employed. The process is based on the mean line design of the pump. It utilizes six geometric parameters as design variables, i.e., number of vanes, inlet beta shroud, exit beta shroud, hub inlet blade draft, Rake angle, and the impeller’s rotational speed. The objective functions employed are pump power, hydraulic efficiency, volumetric efficiency, and pump efficiency. In this reference, five different software packages, i.e., ANSYS Vista, ANSYS DesignModeler, response surface optimization software, and ANSYS CFX, were coupled to achieve the optimized design of the pump geometry. Characteristic maps were generated using simulations conducted for 45 points. Additionally, erosion rate was predicted using 3-D numerical simulations under various conditions. Finally, the transient behavior of the pump, being the highlight of the study, was evaluated. Results suggest that the maximum fluctuation in the local pressure and stresses on the cases correspond to a phase angle of 0°–30° of the casing that in turn corresponds to the maximum erosion rates in the region.

Optimization Design for the Centrifugal Pump under Non-Uniform Elbow Inflow Based on Orthogonal Test and GA_PSO

“…The orthogonal experimental design is used to study the primary and secondary order of geometric parameters of the centrifugal pump under non-uniform elbow inflow, to judge the significance of each factor on the pump efficiency, and to prepare sample points for further GA_PSO optimization. Eight dimensionless factors for the centrifugal pump are selected in the orthogonal experiment, and their specific definitions are shown in the following entry (1)-entry (8). Each factor contains three levels as shown in Table 5.…”

“…The design of the centrifugal pump is generally based on the uniform inflow. The velocity of each fluid particle in the inlet section of the impeller is approximately the average velocity on the flow surface, while the direction is perpendicular to the outlet section of the suction chamber [7][8][9]. Under this ideal environment, the blade design makes the impeller achieve the best work.…”

Structural Weight and Stiffness Optimization of a Midibus Using the Reinforcement and Response Surface Optimization (RSO) Method in Static Condition

“…Response surface optimization method is used for parametric optimization by considering the effect of design variables on the objective function [39]. Response surface optimization (RSO) procedures were conducted to increase the bending stiffness and weight reduction of the structure in pure bending, as shown in Figure 9.…”

Modeling, Kinematic Characteristics Analysis and Experimental Testing of an Elliptical Rotor Scraper Pump

“…As an essential fluid power device, the pump is a component that uses mechanical energy to raise fluid pressure [1,2]. It is extensively used in machinery, hydraulics, automobiles, and other applications.…”