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Search: Posts Made By: sunliming
Forum: OpenFOAM Announcements from ESI-OpenCFD March 26, 2013, 07:11
Replies: 13
Views: 2,819
Posted By sunliming
Thank you for your reply!

Thank you for your reply!
Forum: OpenFOAM Announcements from ESI-OpenCFD March 24, 2013, 08:44
Replies: 13
Views: 2,819
Posted By sunliming
channelFoam gone?

Hello,

I'm concerned with channelFoam solver, but it's gone in OF-2.2.0 &2.2.x, could anybody explain why it is removed? The new item fvOptions(U) appears, I don't know how to form a new...
Forum: OpenFOAM Post-Processing January 3, 2013, 23:19
Replies: 5
Views: 524
Posted By sunliming
Hi, Zhou As far as I know, there is no such...

Hi, Zhou

As far as I know, there is no such function available. If there is any, please let me know!

I think "probe on a line" is less flexible than providing points directly, since the...
Forum: OpenFOAM Post-Processing January 3, 2013, 12:59
Replies: 5
Views: 524
Posted By sunliming
Hi, It's convenient to use #include...

Hi,
It's convenient to use #include "fliename":
[probes]
Then in "system" folder, create a new file named probeLocations where you can put your points there, any point within the domain is...
Forum: OpenFOAM January 3, 2013, 09:03
Replies: 0
Views: 396
Posted By sunliming
Question Update internal mesh with a predicting equation instead of motion solver with diffus?

Update internal mesh with a predicting equation instead of motion solver with diffusivity?

Hi, everybody!

My channel has a wavy bottom wall, which can be described as...
Forum: OpenFOAM January 3, 2013, 08:11
Replies: 2
Views: 706
Posted By sunliming
Hi burt If I'm right, you want a motion...

Hi burt
If I'm right, you want a motion like v(t)=a*sin(omega*t). There are some motion types available, just use oscillatingVelocity. You can make a reference to this web page:...
Forum: OpenFOAM Bugs January 1, 2013, 10:32
Replies: 21
Views: 3,722
Posted By sunliming
Hi Bruno, Actually, I'm doing research on...

Hi Bruno,

Actually, I'm doing research on wind-wave interaction. I'm a graduate student of wind engineering, my final goal is to study mean wind profiles over the ocean under strong wind and give...
Forum: OpenFOAM Programming & Development January 1, 2013, 03:11
Replies: 6
Views: 1,489
Posted By sunliming
Hi Niels, Thank you! It's cool and...

Hi Niels,
Thank you! It's cool and convenient to use "*" for scalarField multiply. Sometimes it is just hard to access OpenFOAM for there are so few documents about how to operate field. And...
Forum: OpenFOAM Bugs December 31, 2012, 02:57
Replies: 21
Views: 3,722
Posted By sunliming
Two more pictures attached for the lower part of...

Two more pictures attached for the lower part of inlet at 4s and outlet at 4s.
Forum: OpenFOAM Bugs December 31, 2012, 02:52
Replies: 21
Views: 3,722
Posted By sunliming
Bug lies in waveDisplacement due to update the internalFields alone without other BCs

Hi Bruno,

Thank you for the quick reply and good advice!

I'll make a report to the bug centre later. I guess it is not a problem with the cyclicAMI BC, for when I replace 'cyclic'...
Forum: OpenFOAM Programming & Development December 31, 2012, 02:02
Replies: 6
Views: 1,489
Posted By sunliming
Can cmptMultiply be used for scalarField, e.g....

Can cmptMultiply be used for scalarField, e.g. cmptMultiply(points1,points2) where type of points1 and points2 is scalarField?
Forum: OpenFOAM December 31, 2012, 01:48
Replies: 2
Views: 327
Posted By sunliming
Lin, Thank you for the quick reply, does...

Lin,
Thank you for the quick reply, does cmptMultipy apply for two scalarFields, namely cmptMultipy(points1,points2) where points1 and points2 are both scalarFields?
Best wishes!
Nick
Forum: OpenFOAM December 30, 2012, 08:17
Replies: 2
Views: 327
Posted By sunliming
The scale function cannot be found anywhere in OF although mentioned in the userguide

scale(a,b) = (a1b1,a2b2,a3b3) where a,b are vectors. This is describes on page 20 of the programmer's guide, but when I use it for programming, the terminal says there is no such function. I tried to...
Forum: OpenFOAM Bugs December 27, 2012, 09:21
Replies: 21
Views: 3,722
Posted By sunliming
Mesh goes into a mess with cyclicAMI

Hi Bruno,
Thank you for the supplement!

I tried cyclicAMI for my case, and found the mesh intersects using cyclicAMI which will not happen with cyclic.

Attacted are my cyclic and cyclicAMI...
Forum: OpenFOAM Bugs December 23, 2012, 00:28
Replies: 21
Views: 3,722
Posted By sunliming
cyclicAMI works for parallel running where cyclic cannot

OH MY GOD, it works!!! You've solved the problem that has bothered me for months! Great great thanks to you, Bruno! Come to China the othet day and let me treat you to dinner!:)
A few days ago, I...
Forum: OpenFOAM Bugs December 19, 2012, 10:02
Replies: 21
Views: 3,722
Posted By sunliming
I'm now more sure about the existence of bugs,...

I'm now more sure about the existence of bugs, since it runs well in parallel mode with the same BCs(2 pair of cyclics,i.e. channel395 case) for static mesh and runs well in serial mode but crashes...
Forum: OpenFOAM Bugs December 16, 2012, 23:00
Replies: 21
Views: 3,722
Posted By sunliming
I guess there must be something wrong with the...

I guess there must be something wrong with the updatecoeffs() in the source code of e.g. oscillatingDisplacement. So when running in parallel one processor updated the coordinates and set the switch...
Forum: OpenFOAM Bugs December 16, 2012, 05:26
Replies: 21
Views: 3,722
Posted By sunliming
parallel running error with cyclic BCs for pimpleDyMFoam

Problem remains unsolved, here is the case file, hope anyone can check it and give some help!
Just run the following applications:
blockMesh
decomposePar
mpirun -np 2 pimpleDyMFoam -parallel
Forum: OpenFOAM Bugs December 4, 2012, 11:16
Replies: 21
Views: 3,722
Posted By sunliming
I think serial run is running with several cores...

I think serial run is running with several cores one after another rather than parallel, so I run "mpirun -np 2 channelFoam (here -parallel is removed so that it becomes serial mode)". But I think...
Forum: OpenFOAM Bugs December 4, 2012, 03:12
Replies: 21
Views: 3,722
Posted By sunliming
What is serial mode? I'v never heard of that...

What is serial mode? I'v never heard of that before, could you explain a little bit? And is it ok to replace cyclic bc with cyclicAMI since the latter stands for cyclic arbitrary moving interface?...
Forum: OpenFOAM Pre-Processing November 28, 2012, 08:10
Replies: 20
Views: 2,709
Posted By sunliming
Thank you Lieven, I tried it and succeeded!

Thank you Lieven, I tried it and succeeded!
Forum: OpenFOAM Bugs November 28, 2012, 07:51
Replies: 21
Views: 3,722
Posted By sunliming
parallel error with cyclic BCs for pimpleDyMFoam and trouble in resuming running

Two problems found when using pimpleDyMFoam and waveDisplacement:

1. When I use pimpleDyMFoam together with cyclic boundary conditions,(actually I use waveDisplacement, you can try the...
Forum: OpenFOAM Pre-Processing November 25, 2012, 12:55
Replies: 20
Views: 2,709
Posted By sunliming
How to set fixed pressure gradient instead of fixed flow rate in channelFoam?

I need to fix pressure gradient rather than flow rate which is adopted in channelFoam, does anyone know how to achieve this?Thank you for giving help.
Forum: OpenFOAM Running, Solving & CFD October 24, 2012, 23:30
Replies: 992
Views: 61,578
Posted By sunliming
Dave and Niels, Thank you for your advice, I'll...

Dave and Niels,
Thank you for your advice, I'll try it out.
Forum: OpenFOAM Running, Solving & CFD October 22, 2012, 23:47
Replies: 992
Views: 61,578
Posted By sunliming
Hi, Dave: Thank you for your reply! But I'm...

Hi, Dave:
Thank you for your reply! But I'm still a little bit confused of "swak4foam to produce a wind gradient", I want to add uniform pressure gradient as a driving force for wind (like in...
Showing results 1 to 25 of 33

 
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