Three-Dimensional Numerical Modeling of the Magnetohydrodynamic Augmented Propulsion Experiment

Turner, Matthew; Hawk, Clark W.; Litchford, Ron J.

doi:10.2514/6.2008-1072

Cited by 8 publications

(4 citation statements)

References 12 publications

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“…This is the case when particle collisions occur very often so that they cannot even complete one cycle of their drift motion due to the presence of electric and magnetic fields perpendicular to each other and to the plasma velocity. Hence, the Hall effect term and electron pressure term can be neglected [21]. The equation is simplified as follows:…”

Section: Governing Equationsmentioning

confidence: 99%

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Numerical simulation of diverging plasma magneto-hydrodynamic acceleration channels

Wei,

Lu,

Yan

et al. 2023

Phys. Scr.

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This paper presents a numerical study of plasma flow in a magneto-hydrodynamic acceleration channel. The results show that in the channel with equal electrode pair spacing, increasing the magnetic field strength reduces the Joule heat dissipation and the temperature.Increasing the applied voltage increases the external energy input, increasing both the exitMach number and the internal temperature. Reducing the electrical conductivity achieves a balance between acceleration and temperature rise. For acceleration channels of different shapes, a constant cross section channel can only accelerate the fluid to near sonic speeds, whereas a diverging channel can achieve supersonic speeds. In addition, maintaining constant electrode spacing in the diverging channel effectively prevents fluid deceleration at the rear of the acceleration channel caused by the reverse Lorentz force under high magnetic field strength.

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Section: Governing Equationsmentioning

confidence: 99%

“…Channel geometry can lead to the development of a wide variety of hydrodynamic and thermal patterns [20]. An optimal channel shape can improve power conversion efficiency by 50%, velocity by 80% and total pressure by 50% [21]. Active energy input can effectively increase the performance of accelerators.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of diverging plasma magneto-hydrodynamic acceleration channels

Wei,

Lu,

Yan

et al. 2023

Phys. Scr.

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“…In recent years, the fundamental performance of MHD accelerator has been evaluated with different electrode connection. 10,11) The Faraday-type configuration has the best acceleration efficiency; whereas optimal acceleration efficiency is difficult to achieve with the Hall connection. The diagonal connection can be a cascade electrode, which improves the acceleration efficiency when operated with only one power source.…”

Section: Introductionmentioning

confidence: 99%

“…These studies reported that the diagonal angle of 45 should be utilized for the electrode pairs. 11) The performance of diagonal-type MHD accelerator with an air plasma as a working gas and a one-dimensional numerical simulation with the thermal-equilibrium condition was relatively performed to the basic MHD accelerator channel. The results confirmed that the best performance was obtained by setting a constant diagonal angle.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Current Distribution and Thrust in Diagonal Pulsed Magnetohydrodynamic Accelerator

Promson

Sugawara

Takahashi

et al. 2018

Trans. Japan Soc. Aero. S Sci.

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This study aims to investigate the incremental thrust in a diagonal magnetohydrodynamic (MHD) accelerator as a function of the number of segmented electrodes, the applied magnetic-flux density, and the different setting of diagonal angle. The peak incremental thrust obtained from the numerical result was agreement with that of the experimental result. For understanding the characteristics of current vector distribution in a diagonal MHD accelerator, we calculated the current vector as the function of a number of segmented electrodes, the applied magnetic-flux density and the different setting of diagonal angle. The simulations showed the current vector distribution inside the MHD channel as well as the current flow crossed into tungsten wires as a diagonal connection of the MHD channel. From these numerical simulations, the tilt angle of current vector distribution was changed by Faraday current in the MHD channel, which was controlled by the magnetic field.

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Performance Analysis of a Diagonal MHD Accelerator for Space Propulsion

Anwari

Sukarsan

2010

IEEE Trans. Plasma Sci.

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Three-Dimensional Numerical Modeling of the Magnetohydrodynamic Augmented Propulsion Experiment

Cited by 8 publications

References 12 publications

Numerical simulation of diverging plasma magneto-hydrodynamic acceleration channels

Numerical simulation of diverging plasma magneto-hydrodynamic acceleration channels

Numerical Study of Current Distribution and Thrust in Diagonal Pulsed Magnetohydrodynamic Accelerator

Performance Analysis of a Diagonal MHD Accelerator for Space Propulsion

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