Numerical modeling of power generation from high-speed flows. II. Application, analysis, and design

Heath Lorzel, Pavlos Mikellides

Research output: Contribution to journalArticle

Abstract

The upgraded nonequilibrium magnetohydrodynamics (MHD) solver MACH2 is applied to the modeling of an annular, Hall-type MHD generator that can be employed upstream of a turbojet engine at freestream conditions corresponding to Mach 5 flight at an altitude of 20 km. The simulations demonstrate the feasibility of converting inlet kinetic power to storable electric power on aircraft traveling at supersonic to hypersonic speeds. Using ionization provided by electron-beam guns and a radial magnetic field B 3T, the generator is shown to produce a maximum of 4.8 MW of electric power while reducing the total kinetic power of the flow by 31. Optimizing the loading parameter, K Load, across the electrodes demonstrates that the generator could produce 1.54 MW of excess electric power that can be stored and used for on-board power requirements. Additionally, the reduction in flow kinetic power results in an increase in static pressure of 30 and a reduction in stagnation temperature of 3 at the turbojet's compressor inlet, aiding the subsequent process of combustion and allowing for operation of the turbojet at higher velocities.

Original languageEnglish (US)
Article number093302
JournalJournal of Applied Physics
Volume109
Issue number9
DOIs
StatePublished - May 1 2011

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electric power
high speed
kinetics
generators
turbojet engines
hypersonic speed
magnetohydrodynamic generators
stagnation temperature
static pressure
compressors
magnetohydrodynamics
upstream
aircraft
flight
electron beams
ionization
requirements
electrodes
magnetic fields
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Numerical modeling of power generation from high-speed flows. II. Application, analysis, and design. / Lorzel, Heath; Mikellides, Pavlos.

In: Journal of Applied Physics, Vol. 109, No. 9, 093302, 01.05.2011.

Research output: Contribution to journalArticle

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