Flow development and analysis of MHD generators and seawater thrusters

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Journal of Fluids Engineering; (United States)

DOI:https://doi.org/10.1115/1.2910002· OSTI ID:7049702

Doss, E D ^[1]; Roy, G D ^[2]

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1. Argonne National Lab., Argonne, IL (US)
2. Office of Naval Research, Arlington, VA (US)

In this paper, the flow characteristics inside magnetohydrodynamic (MHD) plasma generators and seawater thrusters are analyzed and are compared using a three-dimensional computer model that solves the governing partial differential equations for fluid flow and electrical fields. Calculations have been performed for a Faraday plasma generator and for a continuous electrode seawater thruster. The results of the calculations show that the effects caused by the interaction of the MHD forces with the fluid flow are strongly manifested in the case of the MHD generator as compared to the flow development in the MHD thruster. The existence of velocity overshoots over the sidewalls confirm previously published results for MHD generators with strong MHD interaction. For MHD thrusters, the velocity profile is found to be slightly flatter over the sidewall as compared to that over the electrode wall. As a result, distinct enhancement of the skin friction exists over the sidewalls of MHD generators in comparison to that of MHD thrusters. Plots of velocity profiles and skin friction distributions are presented to illustrate and compare the flow development in MHD generators and thrusters.

• OSTI ID: 7049702
• Journal Information: Journal of Fluids Engineering; (United States), Journal Name: Journal of Fluids Engineering; (United States) Vol. 114:1; ISSN JFEGA; ISSN 0098-2202
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300104* -- MHD Generators-- Duct Engineering & Fluid Dynamics
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMPUTERIZED SIMULATION
DIFFERENTIAL EQUATIONS
DIRECT ENERGY CONVERTERS
ELECTRIC FIELDS
ELECTRODES
EQUATIONS
FARADAY EFFECT
FLUID FLOW
FRICTION
HYDROGEN COMPOUNDS
MHD GENERATORS
OXYGEN COMPOUNDS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA PRODUCTION
SEAWATER
SIMULATION
SKIN EFFECT
THREE-DIMENSIONAL CALCULATIONS
THRUSTERS
VELOCITY
WALLS
WATER