CFD & AMP Center
Department of Mechanical & Aerospace Engineering
West Virginia University

Magnetohydrodynamic (MHD) power generation – Development of Wall Functions

Simulation and Model Validation for Innovative Energy Concepts (S&V-IEC) Magnetohydrodynamic (MHD) power generation – Development of Wall Functions
National Energy Technology Laboratory (NETL)
Dr. Ismail B. Celik
Jose Escobar
Sergio Escobar

Executive Summary

MHD technology converts thermal energy directly into electricity without the need of including the conventional steam generator-steam turbine-electric generator. Such process requires that combustion gases be used as a medium to conduct electricity. In order to increase the electric conductivity the combustion gases must be at very high temperatures (up to 3,000 K). The combustion gas is then passed at a high velocity across a high magnetic field.

Current research is focused on the simulation of a compressible turbulent flow through a simple MHD channel with variable Lorentz force, and to investigate its effect on turbulent boundary layer. The aim of this study is to formulate empirical wall functions that can be used in more complex computational fluid dynamics (CFD) simulations of MHD power plants.

Validation of turbulent compressible flow through a convergent-divergent nozzle has been achieved. Also the effect of the magnetic field has been successfully predicted. The development of the wall functions for turbulent compressible flow across a magnetic field is a work in progress.