Good morming
We are studying the flow of water through a pipe (in 3D) with PFEM.
In order to evaluate the discharge in a section, we need to know the
velicity distribution in that section. We have been serching for the
rigt tool in GiD and we have got to the procedure I´m describing
below. We would like to know if there could be an easier way to do
this.
We tried to make a cut in the section to analyze, and then to draw a
line diagram following a diameter of this section, but it doesn't work
(the message "Sorry, but a line graph could not be created" appears).
So, we make as follows.
- Transform the cut to a surface set (Do cuts/Convert cuts to
surface sets).
- Cut the new surface set created witha a diameter, so that we get
half section (approximately, because it doesn't cut it in a straigth
line).
- Draw a border diagram, and extract the information along the
diameter, discarding the nodes at the outside border of the pipe,
whose velocity is zero.
- Work with the data in EXCEL.
This procedure takes some time, but is enough when the velocity
distribution has radial symmetry. Otherwise we would need to repeat it
cutting the setion in different directions.
As I said before, we would like to know if there could be a better
way to do this.
In 2D, a line graph can be created directly over the surface layer
of water, thus it is easier.
Thanks.
Fernando Salazar González
Ingeniero de Caminos, Canales y Puertos
Director de CIMNE-Madrid
Paseo Gral Martínez Campos, 41, 9º Izq.
Madrid 28010.
Tel. +34 91 319 13 59
Tel. +34 610 234 477
Fax: +34 91 319 13 59
fsalazar at cimne.upc.edu
www.cimne.com
AVISO IMPORTANTE
Los datos de carácter personal contenidos en el mensaje, se
registrarán enun fichero para facilitar la gestión de
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por escrito, dirigiéndose a nuestras oficinas de CIMNE, Gran
Capitán s/n, Edificio C1 - Campus Norte UPC, 08034 Barcelona,
España.
AVIS IMPORTANT
Les dades de caràcter personal contingudes en aquest missatge
es registraran en un fitxer per facilitar la gestió de les
comunicacions del CIMNE. Es poden exercir els drets d'accés,
rectificació, cancel·lació i oposició, per
escrit a les nostres oficines del CIMNE, Gran Capità s/n,
Edifici C1, Campus Nord UPC, 08034 Barcelona, Espanya.
IMPORTANT NOTICE
All personal data contained in this mail will be processed
confidentially andstored in a file property of CIMNE in order to
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rectification, deletion and objection by letter sent to CIMNE, Gran
Capitán, Edificio C1 - Campus Norte UPC, 08034 Barcelona,
Spain.
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[GiDlist] Postprocess. Velocity distribution
Moderator: GiD Team
[GiDlist] Postprocess. Velocity distribution
Some comments:
1- You can use 'Line graph' to do a graph in a straight segment between two coordinates, without need to explicitly do the double cut.
(e.g. selecting two points of your diameter is what you want not?)
2- You can set the option: Do cuts-Automatically convert cut to set
Then all cuts are automatically converted to sets (as you know some utilities, like do another cut, are available for sets, but no for cuts)
3- We are adding to post tools to Integrate results along some meshes, without the need to export the graph to excel or other utiltites.
For next beta versions you will be able to integrate some result, like the velocity on a mesh (e.g. the velocity vector on a cutting section), or along a graph (e.g. the a velocity component along a diameter cut)
Enrique Escolano
----- Original Message -----
From: fsalazar at cimne.upc.edu
To: gidlist at gatxan.cimne.upc.edu
Sent: Thursday, January 21, 2010 11:14 AM
Subject: [GiDlist] Postprocess. Velocity distribution
Good morming
We are studying the flow of water through a pipe (in 3D) with PFEM. In order to evaluate the discharge in a section, we need to know the velicity distribution in that section. We have been serching for the rigt tool in GiD and we have got to the procedure I´m describing below. We would like to know if there could be an easier way to do this.
We tried to make a cut in the section to analyze, and then to draw a line diagram following a diameter of this section, but it doesn't work (the message "Sorry, but a line graph could not be created" appears). So, we make as follows.
- Transform the cut to a surface set (Do cuts/Convert cuts to surface sets).
- Cut the new surface set created witha a diameter, so that we get half section (approximately, because it doesn't cut it in a straigth line).
- Draw a border diagram, and extract the information along the diameter, discarding the nodes at the outside border of the pipe, whose velocity is zero.
- Work with the data in EXCEL.
This procedure takes some time, but is enough when the velocity distribution has radial symmetry. Otherwise we would need to repeat it cutting the setion in different directions.
As I said before, we would like to know if there could be a better way to do this.
In 2D, a line graph can be created directly over the surface layer of water, thus it is easier.
Thanks.
Fernando Salazar González
Ingeniero de Caminos, Canales y Puertos
Director de CIMNE-Madrid
Paseo Gral Martínez Campos, 41, 9º Izq.
Madrid 28010.
Tel. +34 91 319 13 59
Tel. +34 610 234 477
Fax: +34 91 319 13 59
fsalazar at cimne.upc.edu
www.cimne.com
AVISO IMPORTANTE
Los datos de carácter personal contenidos en el mensaje, se registrarán enun fichero para facilitar la gestión de las comunicaciones de CIMNE. Se pueden ejercitar los derechos de acceso, rectificación, cancelación y oposición por escrito, dirigiéndose a nuestras oficinas de CIMNE, Gran Capitán s/n, Edificio C1 - Campus Norte UPC, 08034 Barcelona, España.
AVIS IMPORTANT
Les dades de caràcter personal contingudes en aquest missatge es registraran en un fitxer per facilitar la gestió de les comunicacions del CIMNE. Es poden exercir els drets d'accés, rectificació, cancel·lació i oposició, per escrit a les nostres oficines del CIMNE, Gran Capità s/n, Edifici C1, Campus Nord UPC, 08034 Barcelona, Espanya.
IMPORTANT NOTICE
All personal data contained in this mail will be processed confidentially andstored in a file property of CIMNE in order to manage corporate communications. You may exercise the right of access, rectification, deletion and objection by letter sent to CIMNE, Gran Capitán, Edificio C1 - Campus Norte UPC, 08034 Barcelona, Spain.
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1- You can use 'Line graph' to do a graph in a straight segment between two coordinates, without need to explicitly do the double cut.
(e.g. selecting two points of your diameter is what you want not?)
2- You can set the option: Do cuts-Automatically convert cut to set
Then all cuts are automatically converted to sets (as you know some utilities, like do another cut, are available for sets, but no for cuts)
3- We are adding to post tools to Integrate results along some meshes, without the need to export the graph to excel or other utiltites.
For next beta versions you will be able to integrate some result, like the velocity on a mesh (e.g. the velocity vector on a cutting section), or along a graph (e.g. the a velocity component along a diameter cut)
Enrique Escolano
----- Original Message -----
From: fsalazar at cimne.upc.edu
To: gidlist at gatxan.cimne.upc.edu
Sent: Thursday, January 21, 2010 11:14 AM
Subject: [GiDlist] Postprocess. Velocity distribution
Good morming
We are studying the flow of water through a pipe (in 3D) with PFEM. In order to evaluate the discharge in a section, we need to know the velicity distribution in that section. We have been serching for the rigt tool in GiD and we have got to the procedure I´m describing below. We would like to know if there could be an easier way to do this.
We tried to make a cut in the section to analyze, and then to draw a line diagram following a diameter of this section, but it doesn't work (the message "Sorry, but a line graph could not be created" appears). So, we make as follows.
- Transform the cut to a surface set (Do cuts/Convert cuts to surface sets).
- Cut the new surface set created witha a diameter, so that we get half section (approximately, because it doesn't cut it in a straigth line).
- Draw a border diagram, and extract the information along the diameter, discarding the nodes at the outside border of the pipe, whose velocity is zero.
- Work with the data in EXCEL.
This procedure takes some time, but is enough when the velocity distribution has radial symmetry. Otherwise we would need to repeat it cutting the setion in different directions.
As I said before, we would like to know if there could be a better way to do this.
In 2D, a line graph can be created directly over the surface layer of water, thus it is easier.
Thanks.
Fernando Salazar González
Ingeniero de Caminos, Canales y Puertos
Director de CIMNE-Madrid
Paseo Gral Martínez Campos, 41, 9º Izq.
Madrid 28010.
Tel. +34 91 319 13 59
Tel. +34 610 234 477
Fax: +34 91 319 13 59
fsalazar at cimne.upc.edu
www.cimne.com
AVISO IMPORTANTE
Los datos de carácter personal contenidos en el mensaje, se registrarán enun fichero para facilitar la gestión de las comunicaciones de CIMNE. Se pueden ejercitar los derechos de acceso, rectificación, cancelación y oposición por escrito, dirigiéndose a nuestras oficinas de CIMNE, Gran Capitán s/n, Edificio C1 - Campus Norte UPC, 08034 Barcelona, España.
AVIS IMPORTANT
Les dades de caràcter personal contingudes en aquest missatge es registraran en un fitxer per facilitar la gestió de les comunicacions del CIMNE. Es poden exercir els drets d'accés, rectificació, cancel·lació i oposició, per escrit a les nostres oficines del CIMNE, Gran Capità s/n, Edifici C1, Campus Nord UPC, 08034 Barcelona, Espanya.
IMPORTANT NOTICE
All personal data contained in this mail will be processed confidentially andstored in a file property of CIMNE in order to manage corporate communications. You may exercise the right of access, rectification, deletion and objection by letter sent to CIMNE, Gran Capitán, Edificio C1 - Campus Norte UPC, 08034 Barcelona, Spain.
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