Numerical Simulation of Argon Flows In Cylindrical Self-Field MPD Thrusters
- Paper number
IAC-08.C4.4.9
- Author
Mr. Rouhallah khoshkhoo, Iran
- Coauthor
Dr. Mahmood Adami, MUT University, Iran
- Coauthor
Dr. Ahmad Sedaghat, Esfahan university of technology, Iran
- Year
2008
- Abstract
In this paper the fluid flow of Self-Field MPD thruster is analyzed. The MHD equations in which the gas is considered to be fully ionized is used. Equations are developed by the method of finite difference. The flow solver is used an explicit and Total Variation Diminishing (TVD) Scheme. Navier-Stokes equations are solved by TVD method and induced magnetic equations are solved by SOR method. Numerical results are presented for argon for a mass flow rate of 2.25 gr/s , and electrical currents of 4-7 kA. Also, interaction between fluid flow and magnetic field is analyze, variation of speed, density, and temperature at thruster exit and effect of magnetic field on fluid flow exiting from the MPD thruster is analyzed as well. In this paper the effort has been to analyze the effect of Lorentz force resulted from magnetic field over fluid flow. This force causes the increase of plasma fluid velocity. It has more effect on upstream flow with respect to downstream one. Plasma flow modeling is done compressible, independent of time, entrance Mach number of 1 and Reynolds number of 270 over the surface of two coaxial cylindrical compared to results of references. Most important results are that fluid flow density is suddenly increased at the beginning of entrance and also increased over the cathode surface. The fluid flow temperature increased on the cathode surface. The maximum thrust has happened for mass flow of 2.25 gr/s in radial of 3 centimeter. As it is known, the increase of velocity causes the increase of thrust resulting from magnetic field. Maximum velocity has occurred at radial of 3 centimeter which is matched with maximum temperature and reduction of density
- Abstract document
- Manuscript document
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