CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Pre-Processing

PimpleDyMFoam --Simulate turbulence caused by moving object

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 13, 2018, 06:10
Default PimpleDyMFoam --Simulate turbulence caused by moving object
  #1
Member
 
Join Date: Jan 2018
Location: Malaysia
Posts: 58
Rep Power: 8
jiahui_93 is on a distinguished road
Hi, I would like to simulate the turbulence and airflow caused by the movement of elevator car in the shaft, including the airflow surrounding the car and within the whole shaft.

I set my initial condition as:
U
internalField uniform (0 0 0);

boundaryField
{
carTop
{
type movingWallVelocity;
value $internalField;
}
carSide
{
type movingWallVelocity;
value $internalField;
}
carBase
{
type movingWallVelocity;
value $internalField;
}


shaftTop
{
type zeroGradient;
}
shaftSide
{
type fixedValue;
value uniform (0 0 0);
}
shaftBase
{
type fixedValue;
value uniform (0 0 0);
}

P
internalField uniform 0;

boundaryField
{
carTop
{
type zeroGradient;
}
carSide
{
type zeroGradient;
}
carBase
{
type zeroGradient;
}

shaftTop
{
type totalPressure;
p0 uniform 0;
}
shaftSide
{
type zeroGradient;
}
shaftBase
{
type zeroGradient;
}

k
internalField uniform 0.375;

boundaryField
{
carTop
{
type kqRWallFunction;
value uniform 0.375;
}
carSide
{
type kqRWallFunction;
value uniform 0.375;
}
carBase
{
type kqRWallFunction;
value uniform 0.375;
}

shaftTop
{
type zeroGradient;
}
shaftSide
{
type kqRWallFunction;
value uniform 0.375;
}
shaftBase
{
type kqRWallFunction;
value uniform 0.375;
}

epsilon
internalField uniform 14.855;

boundaryField
{
carTop
{
type epsilonWallFunction;
value uniform 14.855;
}
carSide
{
type epsilonWallFunction;
value uniform 14.855;
}
carBase
{
type epsilonWallFunction;
value uniform 14.855;
}

shaftTop
{
type zeroGradient;
}
shaftSide
{
type epsilonWallFunction;
value uniform 14.855;
}
shaftBase
{
type epsilonWallFunction;
value uniform 14.855;
}

nut
internalField uniform 0;

boundaryField
{
carTop
{
type nutkWallFunction;
value uniform 0;
}
carSide
{
type nutkWallFunction;
value uniform 0;
}
carBase
{
type nutkWallFunction;
value uniform 0;
}
shaftTop
{
type zeroGradient;
}
shaftSide
{
type nutkWallFunction;
value uniform 0;
}
shaftBase
{
type nutkWallFunction;
value uniform 0;
}

I expect to see some velocity or pressure contour, but the U and P is uniform along the shaft and throughout car surface. I had attached the picture for results.
U.jpg

P.jpg

k.jpg

epsilon.jpg

nut.jpg

Sorry for my dummy question. I would be very grateful if there's someone to suggest any correction to be done. Thanks
jiahui_93 is offline   Reply With Quote

Old   January 13, 2018, 06:17
Default Velocity contour aimed to get
  #2
Member
 
Join Date: Jan 2018
Location: Malaysia
Posts: 58
Rep Power: 8
jiahui_93 is on a distinguished road
simplecar.PNG

movingcone.jpg
I'm sorry. But my post had limited 5 attachments. So I posted another to attach the picture i aim to get. Thanks
Attached Images
File Type: png movingcone.PNG (41.3 KB, 13 views)

Last edited by jiahui_93; January 14, 2018 at 11:42.
jiahui_93 is offline   Reply With Quote

Reply


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
A problem using reactingParcelFoam to simulate turbulence liyuthu OpenFOAM Running, Solving & CFD 1 February 3, 2016 11:43
Is OpenFOAM capable to simulate a floating object with variable density? Idosar OpenFOAM 0 September 29, 2015 17:13
Compilation error OF1.5-dev on Suse10.3 darenyang OpenFOAM Installation 0 April 29, 2009 05:55
object moving in a pipe david chua FLUENT 0 November 25, 2005 03:50
A moving object within a chamber Whitaker FLUENT 5 October 10, 2000 23:02


All times are GMT -4. The time now is 18:53.