搜索结果: 1-14 共查到“工学 MHD”相关记录14条 . 查询时间(0.069 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Structure-Preserving Spectral Method for Large-Scale MHD System Simulation
MHD 系统仿真 保结构谱
2023/11/6
Structure-preserving numerical methods are crucial for achieving long-time accurate, stable, consistent and physically meaningful simulations. In this talk, we present H^1 and H(div) conforming spectr...
反常热输运是核聚变研究的核心问题之一，微湍流被普遍认为是导致反常热输运的主要因素。微湍流可以被常共存于等离子体中的MHD不稳定性所调制（平衡调制或非线性耦合），进而影响等离子体反常热输运水平。中高波数微湍流被MHD不稳定性调制的成果鲜有实验报道，鉴定及进一步的理解这种非线性相互作用不仅有助于预测以及改善将来聚变装置如ITER、CFETR等离子体的约束行为，也有利于其的安全运行及理论模型的完善。
Eigenvalues, Eigenvectors and Symmetrization of the Magneto-Hydrodynamic (MHD) Equations
Eigenvalues Eigenvectors MHD
2015/6/23
Eigenvalues, Eigenvectors and Symmetrization of the Magneto-Hydrodynamic (MHD) Equations。
Long-time properties of MHD turbulence and the role of symmetries
Long-time properties MHD turbulence the role of symmetries Fluid Dynamics
2012/4/20
We investigate long-time properties of three-dimensional MHD turbulence in the absence of forcing and examine in particular the role played by the quadratic invariants of the system and by the symmetr...
MHD控制超声速边界层的理论研究和数值分析
MHD流动控制 边界层加速 低频近似 超声速边界层
2014/3/7
对MHD(mechanisms of magnetohy drodynamics)控制超声速平板湍流边界层的机理 进行了理论研究和数值模拟. 理论上,采用等离子体低频近似碰撞频率模型，建立 等离子体中电子和离子的力平衡方程，得到等离子体速度、极化电场以及边界层速 度. 数值上，通过空间HLLE格式、LU--SGS时间推进求解时均磁流体动 力学湍流方程，其中湍流模型采用sst--k\omega双方程...
MHD加速器模式磁控进气道的优化设计
超燃冲压发动机 磁流体动力学 磁控进气道 磁流体加速器
2010/9/7
为提高超燃冲压发动机进气道在非设计状态下的性能,对磁控进气道进行了研究。采用二维磁流体动力学(MHD)模型对加速器模式的磁控进气道进行了数值模拟和参数优化。分析了电磁作用使空气流率增加的原因，选取了一组优化的设计参数进行数值模拟，确定了磁流体关键参数与进气道主要性能参数的匹配原则。分析表明磁场的大小和方向以及电磁作用的位置对进气道性能有重要影响；唇口附近及上方的电磁作用对增加空气流率起到了关键的作...
RADIATION AND MASS TRANSFER EFFECTS ON MHD FREE CONVECTION FLOW PAST AN IMPULSIVELY STARTED ISOTHERMAL VERTICAL PLATE WITH DISSIPATION
thermal radiation mass transfer MHD
2009/10/14
This paper is focused on the study of effects of thermal radiation on the natural convective heat and mass transfer of a viscous, incompressible, gray absorbing-emitting fluid flowing past an impulsiv...
COMPUTATIONAL ANALYSIS OF MHD FLOW, HEAT AND MASS TRANSFER IN TRAPEZOIDAL POROUS CAVITY
double diffusion porous media heat and mass transfer
2009/10/14
Numerical simulations are conducted for two-dimensional steady-state double diffusive flow in a trapezoidal porous cavity, submitted to axial magnetic field. The Darcy equation, including Brinkmamn an...
EFFECTS OF OHMIC HEATING AND VISCOUS DISSIPATION ON STEADY MHD FLOW NEAR A STAGNATION POINT ON AN ISOTHERMAL STRETCHING SHEET
steady stagnation point stretching sheet
2009/10/14
Aim of the paper is to investigate effects of ohmic heating and viscous dissipation on steady flow of a viscous incompressible electrically conducting fluid in the presence of uniform transverse magne...
非结构网格高超声速化学非平衡MHD流场数值模拟
非结构网格 MHD方程 化学非平衡
2009/3/9
在非结构网格上对考虑化学非平衡效应的二维高超声速磁流体绕钝头体流动进行了数值模拟。控制方程由二维理想磁流体动力学（MHD）方程和组元连续方程两部分组成，化学动力学模型为5组元17反应模型。MHD方程空间离散采用AUSM格式，时间推进采用显式5步龙格-库塔格式，并通过弱耦合的方式与化学反应控制方程结合在一起。计算模型为二维钝头体，外加磁场为偶极子场，磁场源位于钝头体内部。在高超声速来流条件下，对有、...
为了提高冲压发动机在更高速度区内的性能，扩展发动机的运行速度范围，需要在并行于发动机的燃烧室处附加一套能量旁路系统。从能量旁路系统技术实现的角度，分析AJAX(俄罗斯学者提出的一种带有能量旁路的冲压发动机)中能量注入方式的缺点，改用电弧式能量注入方式，形成一种新型的高超声速推进系统——磁流体-电弧-冲压发动机（MHD-Arc-Ramjet）联合循环。热力分析表明：MHD-Arc-Ramjet联合循...
Effect of MHD on edge electrostatic fluctuation with lower hybrid current drive in the HT-7 tokamak
2007/7/28
专著信息
书名
Effect of MHD on edge electrostatic fluctuation with lower hybrid current drive in the HT-7 tokamak
语种
英文
撰写或编译
作者
B. J. Ding,G. L. Kuang,J. F. Shan,et al.
第一作者单位
出版社
Plasma Phys. Contr. Fusio...
Similarity solution for MHD flow through vertical porous plate with suction
magneto-hydrodynamics forced and free convection porous plate magnetic field
2010/3/11
In this paper a similarity analysis is made for the forced and free convection boundary layer flow in a semi-infinite expanse of an electrically conducting viscous incompressible fluid past a semi-inf...