Basics : Thermal flow
This LS-DYNA simulation shows a simple ICFD forced convection input deck with a coarse mesh. Compared to the basic cylinder flow problem, this problem adds the keywords to solve the heat equation. A 20 degree cooling wave flows over a hot cylinder that maintains a constant temperature of 80 degrees. The domain is initialized at 10 degrees.
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Basics : Thermal flow
This LS-DYNA simulation shows a simple ICFD forced convection input deck with a coarse mesh. Compared to the basic cylinder flow problem, this problem adds the keywords to solve the heat equation. A 20 degree cooling wave flows over a hot cylinder that maintains a constant temperature of 80 degrees. The domain is initialized at 10 degrees.
This LS-DYNA simulation shows a simple ICFD forced convection input deck with a coarse mesh. Compared to the basic cylinder flow problem, this problem adds the keywords to solve the heat equation. A 20 degree cooling wave flows over a hot cylinder that maintains a constant temperature of 80 degrees. The domain is initialized at 10 degrees.
Fluid velocity fringes
*KEYWORD *TITLE *DATABASE_BINARY_D3PLOT *DEFINE_CURVE_TITLE *ICFD_BOUNDARY_FREESLIP *ICFD_BOUNDARY_PRESCRIBED_PRE *ICFD_BOUNDARY_PRESCRIBED_TEMP *ICFD_BOUNDARY_PRESCRIBED_VEL *ICFD_BOUNDARY_NONSLIP *ICFD_CONTROL_TIME *ICFD_DATABASE_DRAG *ICFD_INITIAL *ICFD_MAT *ICFD_PART *ICFD_PART_VOL *ICFD_SECTION *INCLUDE *MESH_BL *MESH_SURFACE_ELEMENT *MESH_SURFACE_NODE *MESH_VOLUME *PARAMETER *END
$-----------------------------------------------------------------------------
$
$ Example provided by Iñaki (LSTC)
$
$ E-Mail: info@dynamore.de
$ Web: http://www.dynamore.de
$
$ Copyright, 2015 DYNAmore GmbH
$ Copying for non-commercial usage allowed if
$ copy bears this notice completely.
$
$X------------------------------------------------------------------------------
$X
$X 1. Run file as is.
$X Requires LS-DYNA MPP R8.0.0 (or higher) with double precision
$X
$X------------------------------------------------------------------------------
$# UNITS: Dimensionless.
$X------------------------------------------------------------------------------
$X
*KEYWORD
*TITLE
ICFD Cylinder flow
*INCLUDE
mesh.k
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
$ $
$ PARAMETERS $
$ $
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*PARAMETER
R T_end 100.0
R dt_plot 1.00
$
$--- Fluid
$
R v_inlet 1.0
Rrho_fluid 1.0
R mu_fluid 0.005
R dt_fluid 0.000
RTemp_init 10.000
RTemp_inle 20.000
R Temp_cyl 80.000
R HC_fluid 1000.
R TC_fluid 200.
$
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
$ $
$ ICFD CONTROL CARDS $
$ $
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*ICFD_CONTROL_TIME
$# ttm dt
&T_end &dt_fluid
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
$ $
$ ICFD PARTS/ SECTION/ MATERIAL $
$ $
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*ICFD_SECTION
$# sid
1
*ICFD_MAT
$# mid flg ro vis
1 1&rho_fluid &mu_fluid
$# hc tc
&HC_fluid &tc_fluid
*ICFD_PART
$# pid secid mid
1 1 1
*ICFD_PART
$# pid secid mid
2 1 1
*ICFD_PART
$# pid secid mid
3 1 1
*ICFD_PART
$# pid secid mid
4 1 1
*ICFD_PART_VOL
$# pid secid mid
10 1 1
$# spid1 spid2 spid3 spid4
1 2 3 4
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
$ $
$ ICFD BOUNDARY/INITIAL CONDITIONS $
$ $
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*ICFD_BOUNDARY_PRESCRIBED_VEL
$# pid dof vad lcid
1 1 1 1
*ICFD_BOUNDARY_PRESCRIBED_VEL
$# pid dof vad lcid
1 2 1 2
*ICFD_BOUNDARY_PRESCRIBED_TEMP
$# pid lcid
1 3
*ICFD_BOUNDARY_PRESCRIBED_PRE
$# pid lcid
2 2
*ICFD_BOUNDARY_FREESLIP
$# pid
3
*ICFD_BOUNDARY_NONSLIP
$# pid
4
*ICFD_BOUNDARY_PRESCRIBED_TEMP
$# pid lcid
4 4
*ICFD_INITIAL
$# pid vx vy vz temp
0 10.
*DEFINE_CURVE_TITLE
Velocity inlet
$# lcid sidr sfa sfo offa offo dattyp
1 &v_inlet
$# a1 o1
0.0 1.0
10000.0 1.0
*DEFINE_CURVE_TITLE
Pressure outlet
$# lcid sidr sfa sfo offa offo dattyp
2
$# a1 o1
0.0 0.0
10000.0 0.0
*DEFINE_CURVE_TITLE
Temp inlet
$# lcid sidr sfa sfo offa offo dattyp
3 &Temp_inle
$# a1 o1
0.0 1.0
10000.0 1.0
*DEFINE_CURVE_TITLE
Temp cylinder
$# lcid sidr sfa sfo offa offo dattyp
4 &Temp_cyl
$# a1 o1
0.0 1.0
10000.0 1.0
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
$ $
$ ICFD MESH KEYWORDS $
$ $
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*MESH_VOLUME
$# volid
1
$# pid1 pid2 pid3 pid4
1 2 3 4
*MESH_BL
$# pid nelth
4 2
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
$ $
$ DATABASE (OUTPUT) $
$ $
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*ICFD_DATABASE_DRAG
$# pid
4
*DATABASE_BINARY_D3PLOT
&dt_plot
*END