[philippose]

Hello and a Good Evening...!

Just wanted to inform the OpenFOAM community that Netgen-4.9.12 is now available for download on the Sourceforge project page.

Some of the changes in the version are:
1. Meshes can now be directly exported in the OpenFOAM 1.5+ Format
2. Improved Colourisation of meshes as a function of mesh size
3. Bugfixes for surface mesh size specification in OpenCascade Geometry
4. Netgen now also works with the Windows SDK v7.0
5. Improvements to the mesh optimisation core system
6. Various fixes to the higher order meshing core system
7. Mesh refinement functions added to nglib


I guess the direct export to OpenFOAM format would be quite interesting... :-)! Hope there are no bugs which I did not catch!

Windows installers are also available for 32-bit and 64-bit with OpenCascade support.

Unfortunately, "official" versions of Linux RPMs are not yet out, but I guess (hope ;-)!) Alberto will update his Linux RPM to the 4.9.12 version.

If anyone finds any critical bugs it will be nice if I could be informed, and ofcourse, "realistic" feature requests are always welcome :-)!

Have a nice day!

Philippose

[alberto]

Originally Posted by philippose

Unfortunately, "official" versions of Linux RPMs are not yet out, but I guess (hope ;-)!) Alberto will update his Linux RPM to the 4.9.12 version.

It all depends on the number of dependencies that changed, and how many weird libraries were included in addition to the previous version

Best,

[philippose]

Hello Alberto :-)!

Nice to hear from you so soon :-)!

I guess I have good news for you.... we have made no changes to any of the dependencies for Netgen-4.9.12... everything is as it has always been. The only changes made are internal to Netgen itself.

I am quite sure the SPEC file that you used for Netgen-4.9.11 should work without any modifications for Netgen-4.9.12 too....

Have a nice evening !

Philippose

[alberto]

Originally Posted by philippose

Hello Alberto :-)!

Nice to hear from you so soon :-)!

I guess I have good news for you.... we have made no changes to any of the dependencies for Netgen-4.9.12... everything is as it has always been. The only changes made are internal to Netgen itself.

I am quite sure the SPEC file that you used for Netgen-4.9.11 should work without any modifications for Netgen-4.9.12 too....

Have a nice evening !

Philippose

You're correct :-)

At the moment I just packaged it for openSUSE 11.2 in my home repository. Packages for the supported versions (11.0 and newer) of openSUSE will come soon.

[alberto]

The new version of netgen is now available for the following platforms (both 32 and 64 bit):

• openSUSE 11.0: http://software.opensuse.org/ymp/hom...1.0/netgen.ymp
• openSUSE 11.1: http://software.opensuse.org/ymp/hom...1.1/netgen.ymp
• openSUSE 11.2: http://software.opensuse.org/ymp/hom...1.2/netgen.ymp

Simply click on the corresponding link and the usual 1-click guided installation procedure will appear.

Notes:

1. I did not test the packages, so, if they do not work, please report it.
2. As soon as the packages will be approved, they'll become part of the openSUSE/science repository

Thanks Philippose for informing me of the new version, and to openSUSE, who offer the amazing build service

[linnemann]

Hi

and thx for the big effort.

I'm uploading a freshly compiled Netgen, with OCC included, to my centFOAM SF page.

again this is verified to work on CentOS/SL/RHEL and derivations from 5.x 64bit.

[philippose]

Hey guys,

Thanks a million Alberto and Linnemann..... for creating and maintaining the OpenSUSE and CentOS binary versions of Netgen :-)!

I shall link to these files from the Netgen Mediawiki site as contributed linux binaries.... I am sure there are a lot of people who would prefer the ease of an automated install !!

Currently I am back to my efforts of putting together an RPM version for Fedora :-)! I had done this earlier (as Alberto might remember), but then I got stuck with some issues with paths and install philosophies......

I am tinkering with the idea of creating a "plugin" in netgen specifically for OpenFOAM :-)! Lets see how that pans out....

Have a nice day!

Philippose

[vaina74]

Granted that I've been learning OpenFOAM (and Ubuntu) since March and I'm a beginner, I have a problem with Netgen installing - and it could be a stupid question.

First I added PPA CAE Team to my system (Lucid Lynx) and tried to install Netgen and all dependencies, but I got the output:

netgen:
Depends: libtogl1  but it is not installable

So I tried the manual installation, according to this procedure. I think I had a problem in Togl compiling or in the last commands (and Netgen doesn't find Toegl library):

/opt/netgen/bin/netgen

Please, can anyone help me?

Maurizio

UPDATE1

There was a stupid error: the right path is /usr/lib/Togl1.7 and not /usr/lib/Togl-1.7. Netgen seems to start but I immediately have an other error:

/opt/netgen/bin/netgen
NETGEN-4.9.12
Developed at RWTH Aachen University, Germany
and Johannes Kepler University Linz, Austria
Error in Tcl-Script:
result = couldn't read file "./ng.tcl": no such file or directory

Any idea?

UPDATE2

I added the command

export NETGENDIR=/opt/netgen/bin

and finally I can start Netgen. It only complains that

optfile ./ng.opt does not exist - using default value

but I think it's not a critical error.

[philippose]

Hello there,

A Good Evening to you :-)!

Looks like you finally solved the problem without any external help :-)! Thanks for sharing the steps required on the forum here for others....

I am not sure who maintains the Ubuntu packages, so I don't know how the installation looks finally, but as you rightly found out, you need to necessarily use Togl-1.7 (Netgen does not work with the latest version Togl-2.0 yet).

In addition, unless the .tcl files which netgen uses are not located in the folder in which the netgen executable is present, you need to set the environment variable "NETGENDIR" to the correct location.

If you have further questions, you can always pop by the Netgen Sourceforge page and post your query in the discussion board there....

Have a nice day ahead!

Philippose

[vaina74]

My compiled Netgen can't import IGES geometries and I'd manually compile OpenCascade geometry kernel. Quite a mess for me, I'm not a linux expert. In the meantime I reported PPA CAE Team Togl bug and Mr Taverne fixed it. Then I installed NETGEN via PPA CAE Team and it works, now I can import IGES geometries without other compiling operations and so on. I recommend PPA CAE Team to all Ubuntu newbie users.

[ggruber]

Originally Posted by vaina74

My compiled Netgen can't import IGES geometries and I'd manually compile OpenCascade geometry kernel. Quite a mess for me, I'm not a linux expert. In the meantime I reported PPA CAE Team Togl bug and Mr Taverne fixed it. Then I installed NETGEN via PPA CAE Team and it works, now I can import IGES geometries without other compiling operations and so on. I recommend PPA CAE Team to all Ubuntu newbie users.

Installing Netgen from the PPA CAE Team works fine. But every time I select an item from the Menu Bar i get the following error:

ggruber@vostro1710:~$ netgen
NETGEN-4.9.12
Developed at RWTH Aachen University, Germany
and Johannes Kepler University Linz, Austria
Including OpenCascade geometry kernel
Parsing ng.tcl
optfile ./ng.opt does not exist - using default values
ERROR: can't read "data(isActive)": no such element in array
errinfo: can't read "data(isActive)": no such element in array
    while executing
"if {$data(isActive)} {
    tixBalloon:Deactivate $w
    } else {
    set data(cancel) 1
    }"
    (procedure "tixBalloon:XXButton" line 8)
    invoked from within
"tixBalloon:XXButton $w $rootX $rootY $b"
    (procedure "tixBalloon_XXButton" line 5)
    invoked from within
"tixBalloon_XXButton   667 251 1"
    (command bound to event)

[vaina74]

Sorry, I can't help you :-(
Post your problem in the Netgen forum (if you don't find any similar thread) or contact the CAE Team to report your bug (you must register to Launchpad).

[vaina74]

I installed NETGEN via PPA CAE Team on Ubuntu 10.04 LTS, but I have a problem with the GUI. The terminal output is:

NETGEN-4.9.12
Developed  at RWTH Aachen University, Germany
and  Johannes Kepler University Linz, Austria
Including OpenCascade  geometry kernel
Parsing ng.tcl
optfile ./ng.opt does not exist -  using default values
ERROR: can't read "data(isActive)": no such  element in array
errinfo: can't read "data(isActive)": no such  element in array
    while executing
"if {$data(isActive)} {
      tixBalloon:Deactivate $w
    } else {
    set data(cancel) 1
      }"
    (procedure "tixBalloon:XXButton" line 8)
    invoked from  within
"tixBalloon:XXButton $w $rootX $rootY $b"
    (procedure  "tixBalloon_XXButton" line 5)
    invoked from within
"tixBalloon_XXButton     872 563 1"
    (command bound to event)
ERROR: can't read  "data(isActive)": no such element in array
errinfo: can't read  "data(isActive)": no such element in array
    while executing
"if  {$data(isActive)} {
    tixBalloon:Deactivate $w
    } else {
      set data(cancel) 1
    }"
    (procedure "tixBalloon:XXButton"  line 8)
    invoked from within
"tixBalloon:XXButton $w $rootX  $rootY $b"
    (procedure "tixBalloon_XXButton" line 5)
     invoked from within
"tixBalloon_XXButton   1222 927 1"
     (command bound to event)
ERROR: can't read "data(isActive)": no such  element in array
errinfo: can't read "data(isActive)": no such  element in array
    while executing
"if {$data(isActive)} {
      tixBalloon:Deactivate $w
    } else {
    set data(cancel) 1
      }"
    (procedure "tixBalloon:XXButton" line 8)
    invoked from  within
"tixBalloon:XXButton $w $rootX $rootY $b"
    (procedure  "tixBalloon_XXButton" line 5)
    invoked from within
"tixBalloon_XXButton     1222 927 1"
    (command bound to event)

I already installed NETGEN on a notebook without troubles, with the same OS. I was suggested I miss Tix package but I checked it out but I have already Tix 8.4.0 installed. Please, can you help me?

[vaina74]

I noticed that Ubuntu 'standard' repositories - and my pc too - include Tix 8.4.0 and not Tix 8.4.3. On the base of this guide, I installed the required packages (some of them already installed):

sudo apt-get 
install build-essential tcl8.5 tcl8.5-dev tk8.5 tk8.5-dev glutg3 
glutg3-dev libxmu-dev liblapack-dev

and downloaded Tix8.4.3-src.tar.gz

tar xfs 
Tix8.4.3-src.tar.gz
cd Tix8.4.3
./configure --with-tcl=/usr/lib/tcl8.5/ --with-tk=/usr/lib/tk8.5/
make
sudo make install

So I installed again NETGEN via PPA CAE Team and now everything is ok.

[zhuqin]

I want to write .in2d format file as my input file in Netgen.

Is there a detailed description of this file format? such as "# dl dr np p1 p1 flaglist" in "Segments", how many flags int the "flaglist" totally? What they mean?

Aslo, Is there a flaglist in "materials"? What are they?

[philippose]

Hi there,

This is a Netgen specific question, and should be posted as a question on the Netgen Mesher forum available at the following link:

Netgen Help Forum

Anyway, I shall see if I can find something regarding this particular file format.

Have a great day ahead!

Philippose

[zhuqin]

Thanks very much for your reply! I will see the link: Netgen Help Forum.

Also, I am expecting a detailed description of in2d file format!

Best wishes!

zhuqin

[philippose]

Hello again,

A Good Day to you!

I was just looking up, and I found that the ".in2d" file format has been described in sufficient detail on pages 17 and 18 of the Netgen user manual "ng4.pdf" which is provided within the "doc" folder of a normal Netgen installation (in Windows and Linux).

In addition, there are a couple of examples of ".in2d" files in the samples folder (called "tutorials" in Windows and "share\netgen" in Linux) to illustrate the explanation in the PDF file.

Hope this helps!

Have a nice day!

Philippose

[run_cfd]

Hi Philipose,

Greetings!!!

I installed Netgen 4.9.13 on windows x32, I have to import *.iges file, and for that it asks for Opencascade library. I downloaded OpenCASCADE650.exe from the OpenCascade website and installed, but still not able to load iges file in Netgen. Could you please help me in getting the OpenCascade library & Clubbing it with Netgen installation?

thanks in advance,
Regards,

MLD

[philippose]

Hello and a Good Evening :-)!

Great to see that you are trying out Netgen :-)!

Did you install Netgen for windows using the Installer, or did you compile it yourself? If you used the installer, you can ask it to install the version of Netgen with OpenCascade support by selecting the right option in the GUI of the Installer.

When you choose to install Netgen with OpenCascade support, the Installer also automatically installs the required OpenCascade DLLs too.... Then things should work automatically.

- Philippose