Basics : Rotating reference frame II
The free surface of a spinning half filled tank adopts a parabolic profile following an analytical law. This examples highlights this behavior by using the non inertial reference frame feature.
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Basics : Rotating reference frame II
The free surface of a spinning half filled tank adopts a parabolic profile following an analytical law. This examples highlights this behavior by using the non inertial reference frame feature.
Fluid velocity fringes
*KEYWORD *TITLE *DATABASE_BINARY_D3PLOT *DEFINE_CURVE_TITLE *ICFD_BOUNDARY_NONSLIP *ICFD_CONTROL_OUTPUT *ICFD_CONTROL_TIME *ICFD_DEFINE_NONINERTIAL *ICFD_DEFINE_POINT *ICFD_MAT *ICFD_PART *ICFD_PART_VOL *ICFD_SECTION *INCLUDE *LOAD_BODY_Z *MESH_INTERF *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: (kg/m/s)
$X------------------------------------------------------------------------------
$X
*KEYWORD
*TITLE
ICFD Rotating sloshing
*INCLUDE
mesh.k
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
$ $
$ PARAMETERS $
$ $
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*PARAMETER
R T_end 5.0
R dt_plot 0.05
$
$--- Fluid
$
R w_spin 9.00
Rrho_fluid 1.00000
R mu_fluid 0.01
R dt_fluid 1e-2
R grav 9.81
$
$---+----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
*ICFD_CONTROL_OUTPUT
$# mslv
3
$---+----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
*ICFD_MAT
$# mid flg ro vis
2 0
*ICFD_PART
$# pid secid mid
1 1 1
*ICFD_PART
$# pid secid mid
2 1 1
*ICFD_PART
$# pid secid mid
3 1 2
*ICFD_PART_VOL
$# pid secid mid
10 1 1
$# spid1 spid2
1 2
*ICFD_PART_VOL
$# pid secid mid
20 1 2
$# spid1 spid2
1 3
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
$ $
$ ICFD BOUNDARY/INITIAL CONDITIONS $
$ $
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*ICFD_BOUNDARY_NONSLIP
$# pid
2
*ICFD_BOUNDARY_NONSLIP
$# pid
3
*ICFD_DEFINE_NONINERTIAL
$# w1 w2 w3 r ptid l lcid relv
0. 0. 1 1 1 10 1 0
*ICFD_DEFINE_POINT
$# poid x y z
1 0 0 0
*DEFINE_CURVE_TITLE
Rotation velocity
$# lcid sidr sfa sfo offa offo dattyp
1 &w_spin
$# a1 o1
0.0 1.0
10000.0 1.0
*LOAD_BODY_Z
$# lcid sf
2 1
*DEFINE_CURVE_TITLE
Gravity force
$# lcid sidr sfa sfo offa offo dattyp
2 &grav
$# 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
4
$# pid1 pid2
3 2
*MESH_INTERF
$# volid
4
$# pid1
1
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
$ $
$ DATABASE (OUTPUT) $
$ $
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*DATABASE_BINARY_D3PLOT
&dt_plot
*END
The free surface of a spinning half filled tank adopts a parabolic profile following an analytical law. This examples highlights this behavior by using the non inertial reference frame feature.