wiki:u/madams/WireTurbulenceStudies

Version 12 (modified by madams, 10 years ago) ( diff )

2D, Low Resolution Simulations

Here is the problem.data for these simulations:

&ProblemData
spacing=.2           ! Lattice constant
thickness=0.01        ! Radius of wire: 0.01, 0.03, 0.06
beta=10             ! magnetic beta: 0.1, 10
mach=20              ! mach number: 3, 20
screen_x=.25         ! location of screen in x
rho_wire=1000d0       ! peak density of screen
rho_wind=1d0     ! density of wind
rho_amb=.01          ! ambient density
/

Note that the values of thickness, beta, and mach, are listed in the comment. Thus we have a total if 8 simulations.

Here is a copy of the space parameters in the global.data:

&GlobalData

!=============================================================================================
! Parameters Related to Space
!=============================================================================================
nDim     = 2                            ! number of dimensions for this problem (1-3)
GmX      = 3200,160,160                 ! Base grid resolution [x,y,z]
MaxLevel = 1                            ! Maximum level for this simulation (0 is fixed grid)
LastStaticLevel = -1                    ! Use static AMR for levels through LastStaticLevel [-1]
GxBounds = 0d0,0d0,0d0,4d0,.2d0,.2d0    ! Problem boundaries in computational units,format:
                                        ! (xlower, ylower, zlower, xupper, yupper, zupper)
                                        ! For 2D problems, set zlower and zupper to 0.d0.

Gmthbc   = 1,2,2,1,2,2                  ! Sets the physical boundary conditions at the edge of the problem domain
                                        ! format:  (x1, y1, z1, x2, y2, z2)
                                        ! 1-Extrapolated,
                                        ! 2-Periodic,
                                        ! 3-ReflectingWall (Field lines do not penetrate)
                                        ! 4-Reflect_BParallel (Field lines held normal
                                        ! 5-Reflect_Cylindrical (Like reflect wall, but also changes sign of phi
                                        !                        components of velocity and magnetic fields)
                                        ! [1,1,1,1,1,1]

In summary we have 8 2D simulations with 1 level of AMR with periodic boundary conditions. We expect the simulation box to be very long and thin. MHD is turned on.

Beta=.1, Mach=20

Thickness Frame Comp. on (04-10-2015) Full (x=4.0) Clipped (x=2.5)
0.01 73
GIF
Clipped GIF
0.03 45
GIF
Clipped GIF

Beta=10, Mach=20

Thickness Frame Comp. on (04-10-2015) Full (x=4.0) Clipped (x=2.5)
0.01 158
GIF
No Clipped GIF
0.03 90
GIF
No Clipped GIF
0.06 96
GIF
No Clipped GIF

Beta=10, Mach=3

Thickness Frame Comp. on (04-10-2015) Full (x=4.0) Clipped (x=2.5)
0.01 200
GIF
Clipped GIF
0.03 200
GIF
Clipped GIF
0.06 200
GIF
Clipped GIF

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