Performance Study of a Diagonal Conducting Wall MHD Power Generation

Hardianto, Triwahju; Sakamoto, Nobuomi; Harada, Nobuhiro

doi:10.2514/6.2007-4016

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…This system is a scramjet-driven MHD generator in which the MHD generator is directly integrated into the propulsion system. The peak scramjet-driven MHD generator performance achieved at near maximum power operating conditions was at a level of 14.8 kW of electric power output [3], [4].…”

Section: Introductionmentioning

confidence: 97%

Three-Dimensional Flow Analysis in a Faraday-Type MHD Generator

Hardianto

Sakamoto

Harada

2008

IEEE Trans. on Ind. Applicat.

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This paper studies the development and analysis of the 3-D flow fields in a Faraday-type magnetohydrodynamic (MHD) generator. A large-scale pulsed MHD generator with a Faraday channel of 4.5 m has demonstrated the maximum electric power output of 510 MW. The results of the present development and simulation are compared with the experimental results of the pulsed "Sakhalin" MHD Generator power generation system. As a result, they show close agreement with experimental ones. The development of the 3-D flow, current density distribution, and generated power are presented as well.Index Terms-Faraday channel type, induced magnetic field, MHD generator, three-dimensional analyses.

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Section: Introductionmentioning

confidence: 97%

Three-Dimensional Flow Analysis in a Faraday-Type MHD Generator

Hardianto

Sakamoto

Harada

2008

IEEE Trans. on Ind. Applicat.

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“…From these reasons, a disk-shaped MHD accelerator can be used as an assisted system for a scramjet or single engine. For example, it can be applied to a combined system with a scramjet [1][2][3][4][5] because the MHD accelerator system produces thrust efficiently (greater than ion engine but lower than chemical systems). However to produce thrust, a 90 degree nozzle attached as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…A magnetohydrodynamics (MHD) accelerator is a significant candidate for a space propulsion system using a scramjet MHD bypass system. [1][2][3][4][5][6][7][8] This MHD bypass system is simple in principle and useful because part of the MHD accelerator can generate considerable acceleration and high-speed gas (plasma) due largely to the interaction of the working gas and the applied magnetic field when supplying an electric field (extracted energy from MHD generator part). However, most of published works focus on the linear MHD accelerator, [1][2][3][4][5][6][7][8] which has some disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Fundamental Performance of Disk-shaped Magnetohydrodynamics Accelerator

Takeshita

Buttapeng

Furuya

et al. 2011

Trans. Japan Soc. Aero. S Sci.

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This paper investigates the acceleration performance of a disk-shaped magnetohydrodynamics (MHD) accelerator. Quasi-1-dimensional (Q1D) numerical simulation employing the MacCormack scheme was developed. For the longer channel length of 0.9 m, thermal loss was estimated at over 60% and effective acceleration could not be achieved owing to large heat loss and large friction loss. For shorter channel lengths, thermal loss can be reduced below 20% owing to the smaller heat and the friction losses. However, with too short a channel length, accelerator performance was decreased by the MHD compression due to excessive Faraday current density. The effect of ratio of cross sectional area on performance was also studied. For a larger area ratio, the gas can be accelerated smoothly throughout the MHD channel. However, for the excessive expansion case of a sevenfold channel, gas velocity near the exit decreased due to transition to a ''generator mode''. For the best acceleration performance, the design channel length should be as short as possible preventing compression at the channel inlet. The area ratio should be large enough to prevent the compression but not too large, to prevent transition to a ''generator mode''.

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