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

dns in a round pipe

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 8, 2019, 09:56
Default dns in a round pipe
  #1
Member
 
EM
Join Date: Sep 2019
Posts: 58
Rep Power: 6
gnwt4a is on a distinguished road
hello,

i am looking for a shortcut to my search for a
numerical method for dns in a straight round pipe
as papers go back decades.

low order fd methods (ie 4th order or less) are out as
they are only good for very low Res.

there is also the problem of the centreline singularity.
fourier in the homogeneous direction is standard and
so for the azimuthal.

so, what would be the best (yes, it is vague) method for
higher Re pipe dns and is suitable for gpu acceleration.

has anyone any ideas (and references)?
--
gnwt4a is offline   Reply With Quote

Old   September 8, 2019, 12:06
Default
  #2
Senior Member
 
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,737
Rep Power: 71
FMDenaro has a spectacular aura aboutFMDenaro has a spectacular aura aboutFMDenaro has a spectacular aura about
Quote:
Originally Posted by gnwt4a View Post
hello,

i am looking for a shortcut to my search for a
numerical method for dns in a straight round pipe
as papers go back decades.

low order fd methods (ie 4th order or less) are out as
they are only good for very low Res.

there is also the problem of the centreline singularity.
fourier in the homogeneous direction is standard and
so for the azimuthal.

so, what would be the best (yes, it is vague) method for
higher Re pipe dns and is suitable for gpu acceleration.

has anyone any ideas (and references)?
--



This flow problem is largely presented in the literature (just google about) and is one of the problems considered also in the well-known AGARD report https://www.google.com/url?sa=t&rct=...FApPb9USUQbkCY


Generally a pseudo-spectral formulation is used, a radial spatial discretization is used. The problem of the singularity at r=0 is only a false problem.
FMDenaro is offline   Reply With Quote

Reply

Tags
dns, numerical methods

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
[DesignModeler] DesignModeler Pipe within pipe shields ANSYS Meshing & Geometry 13 November 25, 2018 23:14
DNS of supercritical CO2 flow in a heated pipe calf.Z OpenFOAM Programming & Development 1 November 11, 2018 04:05
DNS of a Fully Developed Turbulent Pipe Flow abdulra5 OpenFOAM Running, Solving & CFD 2 August 30, 2018 07:15
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 10:11
fluid flow fundas ram Main CFD Forum 5 June 17, 2000 22:31


All times are GMT -4. The time now is 14:35.