CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Capillary empty: works but if intially set to fill: crashes

Register Blogs Members List Search Today's Posts Mark Forums Read

Like Tree1Likes
  • 1 Post By mcfdma

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 26, 2019, 10:28
Default Capillary empty: works but if intially set to fill: crashes
  #1
Member
 
X
Join Date: Jan 2019
Posts: 63
Rep Power: 6
mcfdma is on a distinguished road
Hello.

I am working on electrospray (electrohydrodynamic).

Solver - modified interFoam (which includes electric equations)
OF 2.3.1
Processor - 24
2D axisymmetric model

I inject fluid into the capillary (with a given electric potential/voltage) and further downstream, a ground plate to generate electric field.

Since the experimental flow rate of the fluid flow is extremely slow, I am trying to fill the capillary with the fluid using setFields. However, the simulation does not run and crashes (after several hours and the residual is decreasing but not a single timestep created). This is not the case when the capillary is empty - works perfectly fine.

I have even tried changing my writeFormat from binary to ascii since I got a similar error.
Parallel error

Error message
Code:
[14] #0  Foam::error::printStack(Foam::Ostream&)--------------------------------------------------------------------------
A process has executed an operation involving a call to the
"fork()" system call to create a child process.  Open MPI is currently
operating in a condition that could result in memory corruption or
other system errors; your job may hang, crash, or produce silent
data corruption.  The use of fork() (or system() or other calls that
create child processes) is strongly discouraged.

The process that invoked fork was: **************************

If you are *absolutely sure* that your application will successfully
and correctly survive a call to fork(), you may disable this warning
by setting the mpi_warn_on_fork MCA parameter to 0.
--------------------------------------------------------------------------
 at ??:?
[14] #1  Foam::sigFpe::sigHandler(int) at ??:?
[14] #2   in "/lib64/libc.so.6"
[14] #3  Foam::GAMGSolver::scale(Foam::Field<double>&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const at ??:?
[14] #4  Foam::GAMGSolver::Vcycle(Foam::PtrList<Foam::lduMatrix::smoother> const&, Foam::Field<double>&, Foam::Field<double> const&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const at ??:?
[14] #5  Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
[14] #6  Foam::fvMatrix<double>::solveSegregated(Foam::dictionary const&) at ??:?
[14] #7  Foam::fvMatrix<double>::solve(Foam::dictionary const&) at ??:?
[14] #8  
[14]  at ??:?
[14] #9  __libc_start_main in "/lib64/libc.so.6"
[14] #10  
[14]  at ??:?
[node734:104299:0:104299] Caught signal 8 (Floating point exception: tkill(2) or tgkill(2))
==== backtrace ====
    0  /opt/apps/libs/ucx/1.5.0/lib/libucs.so.0(+0x1b960) [0x2ab3dbfb6960]
    1  /opt/apps/libs/ucx/1.5.0/lib/libucs.so.0(+0x1bcd3) [0x2ab3dbfb6cd3]
    2  /lib64/libc.so.6(+0x35270) [0x2ab3c2aed270]
    3  /lib64/libc.so.6(gsignal+0x37) [0x2ab3c2aed1f7]
    4  /lib64/libc.so.6(+0x35270) [0x2ab3c2aed270]
    5  /opt/apps/apps/gcc/openfoam/2.3.1/OpenFOAM-2.3.1/platforms/linux64GccDPOpt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver5scaleERNS_5FieldIdEES3_RKNS_9lduMatrixERKNS_10FieldFieldIS1_dEERKNS_8UPtrListIKNS_17lduInterfaceFieldEEERKS2_h+0x99) [0x2ab3c1a580f9]
    6  /opt/apps/apps/gcc/openfoam/2.3.1/OpenFOAM-2.3.1/platforms/linux64GccDPOpt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver6VcycleERKNS_7PtrListINS_9lduMatrix8smootherEEERNS_5FieldIdEERKS8_S9_S9_S9_S9_S9_RNS1_IS8_EESD_h+0x20ba) [0x2ab3c1a5c74a]
    7  /opt/apps/apps/gcc/openfoam/2.3.1/OpenFOAM-2.3.1/platforms/linux64GccDPOpt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver5solveERNS_5FieldIdEERKS2_h+0x656) [0x2ab3c1a5da06]
    8  /opt/apps/apps/gcc/openfoam/2.3.1/OpenFOAM-2.3.1/platforms/linux64GccDPOpt/lib/libfiniteVolume.so(_ZN4Foam8fvMatrixIdE15solveSegregatedERKNS_10dictionaryE+0x15d) [0x2ab3bfdbd46d]
    9  new1interFoam(_ZN4Foam8fvMatrixIdE5solveERKNS_10dictionaryE+0x12c) [0x4a75cc]
   10  new1interFoam() [0x43a1b9]
   11  /lib64/libc.so.6(__libc_start_main+0xf5) [0x2ab3c2ad9c05]
   12  new1interFoam() [0x43efb1]
===================
--------------------------------------------------------------------------
Primary job  terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
mpirun noticed that process rank 14 with PID 0 on node node734 exited on signal 8 (Floating point exception).
--------------------------------------------------------------------------
mcfdma is offline   Reply With Quote

Old   September 26, 2019, 10:44
Default
  #2
Member
 
X
Join Date: Jan 2019
Posts: 63
Rep Power: 6
mcfdma is on a distinguished road
Empty capillary
empty.jpg

Filled capillary
filled.jpg
mcfdma is offline   Reply With Quote

Old   September 27, 2019, 08:15
Default
  #3
Senior Member
 
Arjun
Join Date: Mar 2009
Location: Nurenberg, Germany
Posts: 1,134
Rep Power: 29
arjun will become famous soon enougharjun will become famous soon enough
On this site openfoam has the maximum number of fourms.


Why it is so hard to post the openfoam related questions in one of them?
arjun is offline   Reply With Quote

Old   September 27, 2019, 08:43
Default
  #4
Member
 
X
Join Date: Jan 2019
Posts: 63
Rep Power: 6
mcfdma is on a distinguished road
Quote:
Originally Posted by arjun View Post
On this site openfoam has the maximum number of fourms.


Why it is so hard to post the openfoam related questions in one of them?
I tried posting on the OpenFOAM thread but got an error
FORBIDDEN

"You dont have permission to access /Forums/newthread.php on this server", which is why I posted it here.
arjun likes this.
mcfdma is offline   Reply With Quote

Old   April 10, 2021, 05:21
Default
  #5
New Member
 
Adil A
Join Date: Oct 2015
Posts: 3
Rep Power: 9
aadil is on a distinguished road
How are you applying the electric field forces? Are you accounting for charge distribution is only on the free-surface of the liquid?
aadil is offline   Reply With Quote

Reply

Tags
capillary flow, electrohydrodynamic, fluid flow, interfoam surface tension

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[ICEM] ICEM Scripting Issues tylerplowright ANSYS Meshing & Geometry 33 September 27, 2021 17:35
Slip BC works but fixedValue for U crashes. Potential solutions? be_inspired OpenFOAM Running, Solving & CFD 0 March 6, 2015 20:25
Dynamic mesh crashes in parallel, but works in serial 86lolo FLUENT 7 June 24, 2014 06:24
Parallel runs with sonicDyMFoam crashes (works fine with sonicFoam) jnilsson OpenFOAM Running, Solving & CFD 0 March 9, 2012 07:45
Help with GNUPlot Renato. Main CFD Forum 6 June 6, 2007 20:51


All times are GMT -4. The time now is 21:49.