Difference between revisions of "OpenFOAM/C3/Installing-and-running-Gmsh/English-timed"

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(Created page with "{|border=1 |'''Time''' |'''Narration''' |- | 00:01 | Hello and welcome to the spoken tutorial on '''Installing and running''' '''Gmsh.''' |- |00:08 | In this tutorial we wil...")
 
 
(2 intermediate revisions by one other user not shown)
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|-
 
|-
 
| 00:01
 
| 00:01
−
| Hello and welcome to the spoken tutorial on '''Installing and running''' '''Gmsh.'''
+
| Hello and welcome to the '''spoken tutorial''' on '''Installing and running Gmsh.'''
  
 
|-
 
|-
 
|00:08
 
|00:08
−
| In this tutorial we will learn how to  
+
| In this tutorial, we will learn how to:
−
* Install and run '''Gmsh''' and
+
Install and '''run''' '''Gmsh''' and
−
* Create a basic geometry in '''Gmsh'''
+
Create a '''basic geometry''' in '''Gmsh'''.
  
 
|-
 
|-
 
| 00:18
 
| 00:18
−
| As a pre-requisite, the user should have basic knowledge about '''mesh'''.
+
| As a prerequisite, the user should have basic knowledge about '''mesh'''.
  
 
|-
 
|-
 
| 00:24
 
| 00:24
−
| To record this tutorial, I am using  
+
| To record this tutorial, I am using:
−
* '''Ubuntu Linux''' Operating system version 12.04 and
+
'''Ubuntu Linux Operating system''' version 12.04 and
−
* '''Gmsh''' version 2.8.5
+
'''Gmsh''' version 2.8.5
  
 
|-
 
|-
 
| 00:34
 
| 00:34
−
| Let me introduce you to '''Gmsh'''.'''Gmsh '''is  
+
| Let me introduce you to '''Gmsh'''. '''Gmsh '''is an automatic '''3-D finite element mesh generator''' with built-in pre and post-processing facilities.
−
* an automatic 3-D finite element mesh generator,
+
It's an '''open-source''' software.
−
* with built-in pre and post-processing facilities.
+
−
* It's an Open-source software.
+
  
 
|-
 
|-
 
| 00:51
 
| 00:51
−
|It is advantageous in creating complex geometries in '''gmsh''' than '''blockmesh utility''' of '''OpenFOAM'''.
+
|It is advantageous creating complex geometries in '''gmsh''' than '''blockmesh''' utility of OpenFOAM like '''blades, aerofoil.'''
−
*like '''blades''', '''aerofoil.'''
+
OpenFOAM supports importing mesh from third party meshing software like '''Gmsh.'''
−
*'''OpenFOAM '''supports importing mesh from third party meshing software like '''Gmsh.'''
+
  
 
|-
 
|-
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|-  
 
|-  
 
|01:15
 
|01:15
−
|Let me open '''Synaptic Package Manager''' for you.It will ask for your password. Type in your password.
+
|Let me open '''Synaptic Package Manager''' for you. It will ask for your password. Type in your password.
  
 
|-
 
|-
 
|01:25
 
|01:25
−
|In the search box type '''gmsh''' and  Click on the checkbox in front of '''gmsh'''. And click on '''Mark for installation'''.Click on '''Apply'''.
+
|In the '''search box''', type "gmsh" and  click on the checkbox in front of '''gmsh'''. And, click on '''Mark for installation'''. Click on '''Apply'''.
  
 
|-
 
|-
 
|01:40
 
|01:40
−
|Again click  '''Apply'''.This might take some time. Your '''Gmsh '''is now installed.
+
|Again, click  '''Apply'''. This might take some time. Your '''Gmsh '''is now installed.
  
 
|-
 
|-
 
| 01:50
 
| 01:50
−
| Alternately, you can also download '''Gmsh '''from the '''Gmsh '''website.Let me open the '''browser''' for you.
+
| Alternately, you can also download '''Gmsh '''from the '''Gmsh '''website. Let me open the browser for you.
  
 
|-
 
|-
 
| 01:59
 
| 01:59
−
| In the address bar, type: '''http://geuz.org/gmsh/ and'''Press '''Enter.'''
+
| In the '''address bar''', type: '''http://geuz.org/gmsh/''' and press '''Enter.'''
  
 
|-
 
|-
 
| 02:09
 
| 02:09
−
| Scroll down to Downloads and select the current stable '''release''' according to your operating system.I will select '''Linux 64-bit'''. Click on '''Save file''' and press '''Ok'''.
+
| Scroll down to the '''Download''' and select the '''current stable release''' according to your operating system. I will select '''Linux 64-bit'''. Click on '''Save file''' and press '''OK'''.
  
 
|-
 
|-
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|-
 
|-
 
| 02:31
 
| 02:31
−
| Here you can see the '''tar file'''. Extract this file.A new folder will be created.
+
| Here you can see the '''tar file'''. '''Extract''' this file. A new folder will be created.
  
 
|-
 
|-
 
| 02:41
 
| 02:41
−
| Open the folder. Go to '''bin''' and click on '''gmsh '''icon.
+
| Open the folder. Go to '''bin''' and click on the '''gmsh '''icon.
  
 
|-
 
|-
 
| 02:49
 
| 02:49
−
| You can see the '''Gmsh '''start screen.Now we will create a cube using '''Gmsh'''.
+
| You can see the '''Gmsh '''start screen. Now we will create a cube using '''Gmsh'''.
  
 
|-
 
|-
 
| 02:57
 
| 02:57
−
| Here you can see the cube with side equal to one unit.
+
| Here you can see the cube with sides equal to one unit.
  
 
|-
 
|-
 
| 03:03
 
| 03:03
−
| Let me switch back to '''Gmsh'''.On the left hand side, you can see the '''module tree''' with '''Geometry, Mesh''' and '''Solver'''.
+
| Let me switch back to '''Gmsh'''. On the left hand side, you can see the '''module tree''' with '''Geometry, Mesh''' and '''Solver'''.
  
 
|-
 
|-
 
| 03:14
 
| 03:14
−
| Go to '''Geometry - Elementary entitites Click on Add.'''Click on '''Point. '''A new window will appear.
+
| Go to '''Geometry >> Elementary entities'''. Click on '''Add'''. Click on '''Point. '''A new '''window''' will appear.
  
 
|-
 
|-
 
| 03:25
 
| 03:25
−
| Enter the '''X,Y '''and '''Z''' '''coordinates''' starting with (0 0 0) and press '''Enter'''.
+
| Enter the X, Y and Z coordinates starting with (0 0 0) and press '''Enter'''.
  
 
|-
 
|-
 
| 03:34
 
| 03:34
−
| Enter the second coordinate as (1 0 0) and press '''Enter.'''third coordinate as (1 1 0) and press '''Enter'''.fourth coordinate as (0 1 0) and press '''Enter'''.
+
| Enter the second coordinate as (1 0 0) and press '''Enter''', third coordinate as (1 1 0) and press '''Enter''', fourth coordinate as (0 1 0) and press '''Enter'''.
  
 
|-
 
|-
 
|03:53
 
|03:53
−
|Similarly, Add the '''coordinates''' for the positive z-direction starting with point (0 0 1) and press '''Enter'''.Enter the remaining three coordinates and close the window.
+
|Similarly, add the coordinates for the positive z-direction starting with point (0 0 1) and press '''Enter'''. Enter the remaining three coordinates and close the window.
  
 
|-
 
|-
 
| 04:10
 
| 04:10
−
| I have entered all the eight coordinates. Use the left mouse click to move the points.
+
| I have entered all the eight coordinates. Use the left '''mouse''' click to move the points.
  
 
|-
 
|-
 
| 04:18
 
| 04:18
−
| You can see all the 8 '''coordinates '''as points.
+
| You can see all the 8 coordinates as points.
  
 
|-
 
|-
 
| 04:23
 
| 04:23
−
| Now, click on '''Straight line'''. It will ask for a '''start point '''.Select the first point.
+
| Now, click on '''Straight line'''. It will ask for a '''start point'''. Select the first point.
  
 
|-
 
|-
 
| 04:33
 
| 04:33
−
| It will ask for '''end point '''.Select the end point.
+
| It will ask for an '''end point'''. Select the end point.
  
 
|-
 
|-
 
| 04:37
 
| 04:37
−
| A line will be drawn between the two points.Similarly, join all the points.
+
| A line will be drawn between the two points. Similarly, join all the points.
  
 
|-
 
|-
 
| 04:45
 
| 04:45
−
| Press '''q''' to abort.
+
| Press 'q' to '''abort'''.
  
 
|-
 
|-
 
| 04:49
 
| 04:49
−
| Now we will define the faces of the cube.Click on plain surface.It will ask for the surface boundary.
+
| Now, we will define the faces of the cube. Click on '''plane surface'''. It will ask for the '''surface boundary'''.
  
 
|-
 
|-
 
| 04:59
 
| 04:59
−
| Select the edges of the bottom face first.You will notice that the edge we select, turns red in color.
+
| Select the edges of the bottom face first. You will notice that the edge we select, turns red in color.
  
 
|-
 
|-
 
| 05:08
 
| 05:08
−
|It will ask for '''hole''' boundaries, if any.Since we do not have any '''hole''' in the boundary, press '''e''' to end the selection.
+
|It will ask for '''hole''' boundaries, if any. Since we do not have any '''hole''' in the boundary, press 'e' to end the selection.
  
 
|-
 
|-
 
| 05:19
 
| 05:19
−
| You will notice that the the face will appear with dashed centre lines. Now define the top face.
+
| You will notice that the face will appear with dashed centre lines. Now define the '''top face'''.
  
 
|-
 
|-
 
| 05:29
 
| 05:29
−
| Similarly, define the remaining faces.I have defined all the faces. Press '''q''' to abort.
+
| Similarly, define the remaining faces. I have defined all the faces. Press 'q' to abort.
  
 
|-
 
|-
 
| 05:39
 
| 05:39
−
| Now, we will define the volume of the cube.It will ask for the '''volume'''boundary.
+
| Now, we will define the volume of the cube. It will ask for the '''volume''' boundary.
  
 
|-
 
|-
 
| 05:47
 
| 05:47
−
| Select any of the surface boundary and press '''e '''to end selection.
+
| Select any of the surface boundary and press 'e' to end selection.
  
 
|-
 
|-
 
| 05:55
 
| 05:55
−
| A yellow dot appears at the centre of the cube, which represents the volume.Press '''q''' to abort.
+
| A yellow dot appears at the centre of the cube which represents the volume. Press '''q''' to abort.
  
 
|-
 
|-
 
| 06:04
 
| 06:04
−
| Now, we will define the physical groups, which will be used in exporting the geometry to '''OpenFOAM.'''
+
| Now, we will define the physical groups which will be used in exporting the geometry to '''OpenFOAM.'''
  
 
|-
 
|-
 
| 06:13
 
| 06:13
−
| Go to '''Physical Group - Add''' and click on '''Surface.'''
+
| Go to '''Physical Groups >> Add''' and click on '''Surface.'''
  
 
|-
 
|-
 
| 06:19
 
| 06:19
−
| Select the front surface first and press '''e''' to end the selection.Select the back surface and press '''e '''to end the selection.
+
| Select the front surface first and press '''e''' to end the selection. Select the back surface and press '''e '''to end the selection.
  
 
|-
 
|-
 
| 06:31
 
| 06:31
−
| Similarly, select the remaining surfaces. I have selected all the surfaces. Press '''q''' to abort.
+
| Similarly, select the remaining surfaces. I have selected all the surfaces. Press '''q''' to abort.
  
 
|-
 
|-
 
| 06:41
 
| 06:41
−
| Now, we'll define the physical '''volume.'''Click on '''Volume.''' It will ask for volume.Click on the yellow dot at the centre of the cube.
+
| Now, we'll define the physical '''volume.''' Click on '''Volume.''' It will ask for volume. Click on the yellow dot at the centre of the cube.
  
 
|-
 
|-
 
| 06:53
 
| 06:53
−
|The yellow dot will turn red in color.  Press '''e '''to end selection. Press '''q''' to abort.
+
|The yellow dot will turn red in color.  Press '''e '''to end selection. Press '''q''' to abort.
  
 
|-
 
|-
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|-
 
|-
 
| 07:07
 
| 07:07
−
| Go to '''File''' - '''Save as.'''We will name our file as '''cube.geo'''
+
| Go to '''File >> Save as.''' We will name our file as '''cube.geo'''.
  
 
|-
 
|-
 
| 07:15
 
| 07:15
−
|Note that here '''geo '''stands for '''geometry'''. Click '''Ok'''.Again click '''Ok'''.
+
|Note that here "geo" stands for '''geometry'''. Click '''Ok'''. Again click '''Ok'''.
  
 
|-
 
|-
 
| 07:23
 
| 07:23
−
| This brings us to the end of this tutorial.As an '''assignment''', create other simple geometry in '''Gmsh''' like cylinder and sphere.
+
| This brings us to the end of this tutorial. As an assignment, create other simple geometry in '''Gmsh''' like cylinder, sphere.
  
 
|-
 
|-
 
| 07:35
 
| 07:35
−
| In this tutorial we learnt :
+
| In this tutorial We:Learnt to install and run '''Gmsh''' using '''Synaptic Package Manager''' and website. Created a cube using '''Gmsh'''.
−
* To install and run '''Gmsh''' using Synaptic Package Manager and website.
+
−
* Created a cube using '''Gmsh'''.
+
  
 
|-
 
|-
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|-
 
|-
 
|07:56
 
|07:56
−
| We conduct workshops using spoken tutorials and give certificates Please contact us at this URL contact@spoken-tutorial.orgSpoken Tutorial is funded by NMEICT, MHRD, Government of India.  
+
| We conduct workshops using spoken tutorials and give certificates. Please contact us at this URL:'''contact@spoken-tutorial.org'''
 +
Spoken Tutorial is funded by NMEICT, MHRD, Government of India.  
  
 
|-
 
|-
 
| 08:11
 
| 08:11
−
| The script was created by Gautam Sharma and this is Rahul Joshi from IIT BOMBAY signing off.Thanks for joining.
+
| The script was created by Gautam Sharma and this is Rahul Joshi from '''IIT Bombay''', signing off. Thanks for joining.
  
 
|}
 
|}

Latest revision as of 18:39, 20 February 2017

Time Narration
00:01 Hello and welcome to the spoken tutorial on Installing and running Gmsh.
00:08 In this tutorial, we will learn how to:

Install and run Gmsh and Create a basic geometry in Gmsh.

00:18 As a prerequisite, the user should have basic knowledge about mesh.
00:24 To record this tutorial, I am using:

Ubuntu Linux Operating system version 12.04 and Gmsh version 2.8.5

00:34 Let me introduce you to Gmsh. Gmsh is an automatic 3-D finite element mesh generator with built-in pre and post-processing facilities.

It's an open-source software.

00:51 It is advantageous creating complex geometries in gmsh than blockmesh utility of OpenFOAM like blades, aerofoil.

OpenFOAM supports importing mesh from third party meshing software like Gmsh.

01:08 Let me show you how to install Gmsh.

Gmsh can be installed using Synaptic Package Manager.

01:15 Let me open Synaptic Package Manager for you. It will ask for your password. Type in your password.
01:25 In the search box, type "gmsh" and click on the checkbox in front of gmsh. And, click on Mark for installation. Click on Apply.
01:40 Again, click Apply. This might take some time. Your Gmsh is now installed.
01:50 Alternately, you can also download Gmsh from the Gmsh website. Let me open the browser for you.
01:59 In the address bar, type: http://geuz.org/gmsh/ and press Enter.
02:09 Scroll down to the Download and select the current stable release according to your operating system. I will select Linux 64-bit. Click on Save file and press OK.
02:26 After finishing your download, go to the Downloads folder.
02:31 Here you can see the tar file. Extract this file. A new folder will be created.
02:41 Open the folder. Go to bin and click on the gmsh icon.
02:49 You can see the Gmsh start screen. Now we will create a cube using Gmsh.
02:57 Here you can see the cube with sides equal to one unit.
03:03 Let me switch back to Gmsh. On the left hand side, you can see the module tree with Geometry, Mesh and Solver.
03:14 Go to Geometry >> Elementary entities. Click on Add. Click on Point. A new window will appear.
03:25 Enter the X, Y and Z coordinates starting with (0 0 0) and press Enter.
03:34 Enter the second coordinate as (1 0 0) and press Enter, third coordinate as (1 1 0) and press Enter, fourth coordinate as (0 1 0) and press Enter.
03:53 Similarly, add the coordinates for the positive z-direction starting with point (0 0 1) and press Enter. Enter the remaining three coordinates and close the window.
04:10 I have entered all the eight coordinates. Use the left mouse click to move the points.
04:18 You can see all the 8 coordinates as points.
04:23 Now, click on Straight line. It will ask for a start point. Select the first point.
04:33 It will ask for an end point. Select the end point.
04:37 A line will be drawn between the two points. Similarly, join all the points.
04:45 Press 'q' to abort.
04:49 Now, we will define the faces of the cube. Click on plane surface. It will ask for the surface boundary.
04:59 Select the edges of the bottom face first. You will notice that the edge we select, turns red in color.
05:08 It will ask for hole boundaries, if any. Since we do not have any hole in the boundary, press 'e' to end the selection.
05:19 You will notice that the face will appear with dashed centre lines. Now define the top face.
05:29 Similarly, define the remaining faces. I have defined all the faces. Press 'q' to abort.
05:39 Now, we will define the volume of the cube. It will ask for the volume boundary.
05:47 Select any of the surface boundary and press 'e' to end selection.
05:55 A yellow dot appears at the centre of the cube which represents the volume. Press q to abort.
06:04 Now, we will define the physical groups which will be used in exporting the geometry to OpenFOAM.
06:13 Go to Physical Groups >> Add and click on Surface.
06:19 Select the front surface first and press e to end the selection. Select the back surface and press e to end the selection.
06:31 Similarly, select the remaining surfaces. I have selected all the surfaces. Press q to abort.
06:41 Now, we'll define the physical volume. Click on Volume. It will ask for volume. Click on the yellow dot at the centre of the cube.
06:53 The yellow dot will turn red in color. Press e to end selection. Press q to abort.
07:02 Our cube is complete. Let us save our work.
07:07 Go to File >> Save as. We will name our file as cube.geo.
07:15 Note that here "geo" stands for geometry. Click Ok. Again click Ok.
07:23 This brings us to the end of this tutorial. As an assignment, create other simple geometry in Gmsh like cylinder, sphere.
07:35 In this tutorial We:Learnt to install and run Gmsh using Synaptic Package Manager and website. Created a cube using Gmsh.
07:48 This video summarizes the Spoken Tutorial project. If you do not have good bandwidth, you can download and watch it.
07:56 We conduct workshops using spoken tutorials and give certificates. Please contact us at this URL:contact@spoken-tutorial.org

Spoken Tutorial is funded by NMEICT, MHRD, Government of India.

08:11 The script was created by Gautam Sharma and this is Rahul Joshi from IIT Bombay, signing off. Thanks for joining.

Contributors and Content Editors

PoojaMoolya, Pratik kamble, Sandhya.np14

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