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Improvement in the Performance of Nonequilibrium Plasma MHD Generator Based on the Development Road Map

基于发展路线图的非平衡等离子体磁流体发生器性能改进

基本信息

批准号：
16360134
负责人：
OKUNO Yoshihiro
金额：
$ 6.72万
依托单位：
Tokyo Institution of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360134/
关键词：
MHD Generator Disk Generator Non-equilibrium Plasma High Efficiency Power Generation High Power Density High Magnetic Flux Density rf Electromagnetic Field Pre-ionization

项目摘要

The aim of the present research is to clarify the necessary requirements which should be fulfilled in a highly efficient non-equilibrium plasma MHD generator. The following approaches have been attempted in order to reduce fluid-dynamical and electrical dissipations in the MHD generator ; (1) the optimization of the generator shape (the reduction of fluid-dynamical dissipation), (2) the improvement of electrical efficiency by applying a high magnetic flux density (the reduction of electrical dissipation), (3) the suppression of the ionization instability by applying a radio-frequency electromagnetic field (plasma stabilization), and (4) the estimate and evaluation from the numerical simulation.It has been successfully demonstrated in the electrical power generation experiments that the improvement in the isentropic efficiency along the development road map of the MHD generator are achievable by means of the optimization of the generator shape. Furthermore, a high power density has been recorded under high magnetic flux density, and the nonequilibrium plasma in the MHD generator is controllable and stabilized by applying radio-frequency electromagnetic field, which surely result in the improvement in the generator performance. These encouraging experimental results have been confirmed and supported from the corresponding numerical simulations with two-dimensional LES (Large Eddy Simulation) model.As a result of the present research, "Improvement in the performance of nonequilibrium plasma MHD generator based on the development road map" was successfully demonstrated, and the fruitful results obtained here surely contribute to the advancement in the research and development of the non-equilibrium plasma MHD electrical power generation.

本研究的目的是阐明在一个高效的非平衡等离子体磁流体发电机应满足的必要要求。为了减少磁流体动力发电机中的流体动力耗散和电耗散，已经尝试了以下方法：（1）发电机外形的优化（2）通过施加高磁通密度来提高电效率（3）通过施加射频电磁场来抑制电离不稳定性发电实验结果表明，通过优化发电机的形状，沿着MHD发电机的发展路线，等熵效率的提高是可以实现的。此外，在高磁通密度下，已经记录了高功率密度，并且通过施加射频电磁场，MHD发生器中的非平衡等离子体是可控的和稳定的，这必将导致发生器性能的改善。这些令人鼓舞的实验结果已经得到了相应的二维大涡模拟数值模拟的证实和支持（大涡模拟）模型。作为本研究的结果，“基于开发路线图的非平衡等离子体MHD发电机性能的改进”被成功地证明，所取得的丰硕成果必将推动非平衡等离子体磁流体发电技术的研究和发展。