Visualization to Various 3-Dimensional
MHD Models of Earth's Magnetosphere
We will show how to use the graphics programs to make VRML files of various 3-Dimensional MHD models of Earth”Ēs Magnetosphere. The output binary files produced by various MHD simulation codes by using modified leap-frog scheme are used as input.
execution of VRML graphics program
1. f77 -c -O zvrsubb.f 2. f77 -O zvrmagb.f zvrsubb.o
where file must be defined in open statement like c open(10,file='earthb10.data', c 1 access='sequential',form='unformatted') open(11,file='earthb11.data', 1 access='sequential',form='unformatted') c
3. a.out & : output is written in fort.10 4. mv fort.10 fort.102
1. f77 -c -O zvrsubb.f 5. f77 -O zvrcrob.f zvrsubb.o 6. a.out & : output is written in fort.10 7. mv fort.10 fort.101 8. cat fort.101 fort.102 > zvrml01.wrl
Summary of parameters in MHD Simulation Code
(nx,ny,nz) = (180,60,60) | grid number without boundary | |
(nx,ny,nz) = (180,60,60) | grid number without boundary | |
nxp=30 | parameter to determine earth position | |
(xxl,yyl,zzl) = (90.5,30.5,30.5)Re | length in each direction | |
hx=xxl/float(nx+1)=0.5Re | grid interval in x direction | |
hy=yyl/float(ny+1)=0.5Re | grid interval in y direction | |
hz=zzl/float(nz+1)=0.5Re | grid interval in z direction |