h***o
发帖数: 539 | 1 大家都是做什么的？互相都了解得多了，可能更有得聊
我的大方向是空间物理，也就是研究日地空间，小方向
就是做模式，模拟各种带电离子在近地电场和磁场作用
下的运动，研究范围是两个到七个地球半径的区域。应
用上，可以帮助了解地面磁场的扰动，跟无线电通讯
有那么一丝关系。另一方面是防止高能粒子击穿人造太
空飞行器或者宇航员。
具体的说，就是用数字方法解离子运动方程。现在搞的
都还是线性的，下一步要考虑self-consistency, i.e.,
带电离子运动同时会改变周围的电磁场，改变的电磁场
反过来又要影响离子运动。考虑了这个以后，问题就有
点复杂了。
说完了，希望能抛砖引玉呀 | h***o
发帖数: 539 | 2 I need to solve Vlasov equation. For some kinds of particles, e.g. electrons,
I have to add a loss term at the LHS of Vlasov equation. It may be similar
to your flux eqs. In my case the ambient E and B fields vary with
time as well as with position. And they are also modified by particles'
motion.
I don't know what's your case, and how you make your eqs self-consistent.
What I know is in my area, if electrons and ions move together, e.g.,only
E cross B drift matters, you can treat them as fluid. | w*******g
发帖数: 99 | 3 I am working on computational fluid dynamics, mainly incompressible flow.
Numerical technique, such as grid generation, multigrid, hybrid grid are
my research interest. Using these techniques, I calculate the flow and heat
mass transfer in crystal growth process, certainly electromagnetic field is
also included in the model but I am not an expert on that topic.
It seems you guys have as pretty good idea about EM, maybe I will ask you some
questions later on... Let's together make this board more
【在 h***o 的大作中提到】
: I need to solve Vlasov equation. For some kinds of particles, e.g. electrons,
: I have to add a loss term at the LHS of Vlasov equation. It may be similar
: to your flux eqs. In my case the ambient E and B fields vary with
: time as well as with position. And they are also modified by particles'
: motion.
: I don't know what's your case, and how you make your eqs self-consistent.
: What I know is in my area, if electrons and ions move together, e.g.,only
: E cross B drift matters, you can treat them as fluid.
| h*******m
发帖数: 772 | 4 我们需要求解地震波方程.!!
some
electrons,
and
you).
【在 w*******g 的大作中提到】
: I am working on computational fluid dynamics, mainly incompressible flow.
: Numerical technique, such as grid generation, multigrid, hybrid grid are
: my research interest. Using these techniques, I calculate the flow and heat
: mass transfer in crystal growth process, certainly electromagnetic field is
: also included in the model but I am not an expert on that topic.
: It seems you guys have as pretty good idea about EM, maybe I will ask you some
: questions later on... Let's together make this board more
| h*******m
发帖数: 772 | 5 我们需要求解地震波方程.同时需要求解大型稀疏矩阵方程,所以需要用到并行计算!!
some
electrons,
and
you).
【在 w*******g 的大作中提到】
: I am working on computational fluid dynamics, mainly incompressible flow.
: Numerical technique, such as grid generation, multigrid, hybrid grid are
: my research interest. Using these techniques, I calculate the flow and heat
: mass transfer in crystal growth process, certainly electromagnetic field is
: also included in the model but I am not an expert on that topic.
: It seems you guys have as pretty good idea about EM, maybe I will ask you some
: questions later on... Let's together make this board more
| h***o
发帖数: 539 | 6 现在做计算的很少不用parallel computing的
【在 h*******m 的大作中提到】
: 我们需要求解地震波方程.同时需要求解大型稀疏矩阵方程,所以需要用到并行计算!!
:
: some
: electrons,
: and
: you).
| h***o
发帖数: 539 | 7
这个得要求workstation本身有多cpu吧
这个"算法上想办法"怎么说? 大家讨论讨论 | w*******g
发帖数: 99 | 8 I dl empire before and it uses FDTD... If you are really interested in
using commercial software, you can try to search soft.jx163.com or
www.taishen.net/soft. Good luck! | d***q
发帖数: 1119 | 9 欧准备研究随机微分方程
数值解法的。hoho【 在 hanzo (英雄本"色") 的大作中提到: 】 |
|
