Authors

1 1Department of Mechanical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran

2 School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 111554563, Iran

3 School of Chemical Engineering, Iran University of Science and Technology, Tehran, Iran

4 university of Tehran

5 Department of Mechanical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran

6 Head of research and technology at Alborz province gas company

7 Metering Senior Engineering in NIGC, APGC

10.22034/ijche.2020.129379

Abstract

Magnetorheological fluids contain suspended magnetic particles that will arrange in chains in the presence of a magnetic field and causing conversion of the fluid from a liquid state to a quasi-solid state. These fluids can be used in valves as a cause of pressure drop and flow interruption. The purpose of this research is to investigate the feasibility of using magnetorheological fluid (MRF) in the industrial valve. At first, the suitable magnetorheological fluid for industrial valve applications was prepared. The rheological properties of the MRF sample were measured with the MCR300 rheometer in the presence of a magnetic field. The Bingham plastic continuous model is presented to predict fluid behavior. Model coefficients were obtained using MATLAB software. Then, the coefficients of the model were used to simulate the behavior of the magnetorheological fluid in the presence of the magnetic field in the valve. The geometry and dimensions of the valve were designed according to the dimensions of the industrial sample. Then the CFD simulation with Fluent software was done by using the Bingham model and fluid characteristics obtained from experimental results. The effect of the magnetic field on the fluid flow velocity in the sleeve valve has been investigated. The results showed that the effects of the magnetic field on the pressure at the center of the sleeve, with the increase of the magnetic field, increased significantly and also its amplitude became shorter with the increase of the magnetic field. The magnetic field up to 0.5 Tesla increased pressure and decreased amplitude. Therefore, as the magnetic field increased, the amplitude of the maximum pressure on the sleeve was greatly reduced.
 

Keywords