introduction to star

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Tutorial 1:

Introduction to STAR-CCM+

Introduction:

The intention of this tutorial is to get the user familiar with the STAR-CCM environment and getting

him on track and enjoying CFD as soon as possible. Initially at the moment you will use a ready made

file to start. While the next tutorial will be guiding you on how to make your mesh to processed later

on to the calculation stage. Read both the steps and the figure notes because they ideas spread out

throughout the tutorial.

Step1: Launch START-CCM by double clicking on its icon on the desktop.

Figure1: a reminder that not all lab machines have the STAR-CCM software installed on them.

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Step2: Once the program is launched it should look like as shown below. Go to file and choose new

simulation.

Figure2: You might have to wait a bit till STAR-CCM gets running.

Step3: This is where the location of the new simulation.

Figure3: At the moment the illustration are a bit simplified for the user and will get complex with

time.

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Step4: Once you have selected new simulation choose serial and press ok.

Figure4: Depending on your studied case the selection of serial or parallel is taken, also depending

on the hardware provided in the computer lab dual core or quad core etc.

Step5: When you get to this stage now you can choose to load a previous project or start working on

a new one.

Figure5: Just by looking at the Output Star 1 , and reading the comments the arrow is pointing at,

you can make sure that things are alright.

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Step6: Now for the case of this tutorial we will rely on a previously prepared file, just to get things

kicking off. Go to file, import and choose import volume mesh. The file needed for this tutorial is

called mixing_pipe.ccm its link will be provided with this tutorial.

Figure6: Because this is a previously made mesh you are importing the mesh as a volume mesh, but

at more advanced stages of your project you will need to generate your own volume mesh.

Step7: Create a folder and call it star and copy the file called mixing_pipe.ccm, so that when you

choose import you can find the required file.

Figure7: Select the file mixing_pipe.ccm and press open.

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Step8: The part should look as shown below after the file has been opened.

Figure8: Notice that the view of the part is in perspective view and its in shaded mode without

edges.

Rotation of View (Left Button):

Press once and the specified

point on the screen and move

mouse you can rotate your view.

angle.

Zoom of View (Middle Button):



mouse you can zoom your view.

.angle.

Pan View (Right Button):



mouse you pan your view angle.

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Step9: Press on the shown icon that has a picture of a sphere and choose grid on, a question that

comes to the mind of the student is why do I care wither the grid is on or off, the answer: it’s

because to check that the mesh has the required structure to perform a calculation on it by the

software solver any discontinuity would cause a problem later as the project progresses.

Figure9: Choose grid on after pressing on the sphere icon.

Step10: Pressing on icon that has a camera on it opens up a wide variety of viewing options. These

options provide all sorts of top , down,…etc, with compound actions where you will get to choose a

top view with a zoom in or out , I will leave it to the user to try these commands out.

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Figure10: choose the parallel option in the projection mode, which will come handy later on, when

you want to use the measure command or choosing the appropriate slice plane for your study.

Step11: The parallel projection view as can be seen.

Figure11: This prepares the view for later wanted operations.

Step12: The standard views of top, bottom, left and right can be accessed from the camera icon.

Figure12: Try using the +Y right zoom in or –Y right zoom out.

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Step13: During a certain stage of your project you will need to take a certain measurement on the

geometry. This is done through pressing the icon that has a scaled ruler on it.

Figure13: For our case we will want to now the dimensions of the inflow section of the pipe.

Step14: Press the left button on the bottom edge of the inflow tube and you will see that you get a

line created with a red text illustrating the measured distance.

Figure14: Press again the left button on the top half of the tube to specify the second point.

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Step15: After the previous steps have been done you will see on the screen a red text with the

measured distance.

Figure15: Looking at the Output-star 1 you will see the coordinates of the points that you selected.

Note that the formula for distance is:

Step16: Changing the transparency of the mesh is essential to identify if there are any defects in the

internal structure of the studied mesh.

Figure16: The transparency icon is shown by an icon that has different plans with different colours in

a Cartesian coordinate’s system space.

Step17: Try using the rotate, pan or zoom view to get a view that looks something like this.

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Figure17: Once you’re happy with it processed to the next step.

Step18: Go to the camera icon and chose the store current view.

Figure18: As much as these steps seem simple at the moment as much as you will feel they are

essential to master for later stages of STAR-CCM applications.

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Step19: Selecting the restore view can be helpful in cases where you want to check the pattern of

the flow from a certain angle after changing the simulation parameters.

Figure19: As shown by selecting the view 1 you will get to the pre-stored camera angle.

Step20: After selecting restore view, view 1 you should get something related to what view angle

you had previously specified.

Figure20:

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Step21: Choose Front view, please make sure that your camera projection is parallel so that you can

make the proper cross section plane.

Figure21: Looking at the front view try to see what are the most suitable points to conduct the cross

section so that you can satisfy symmetry.

Step22: Once you have chosen what points you want, press on the icon that the arrow is pointing at

Then press the left button to select the first point and press again to select the second point.

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Figure22: when the two points are selected the program will enter their coordinates into a plane

formula and creates a plane automatically.

Step23: Select New Geometry Displayer and press ok.

Figure23: The software will in its black box code select all the points of the domain that the plane

intersects with and stores them in a different section to acsess later for data analysis and

visulization.

Step24: After pressing ok, you will get a plane section as shown below.

Figure24:

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Step25: By selecting on the derived parts and pressing on plane section right click and chose edit.

Figure25:

Step26: By right clicking on the mouse on the plane section you can edit the name of the selected

plane and that’s important for advanced stages of your project to rename the cross section due to

search for the cross section your interested to look at.

Figure26: choose whatever name you see practical for your case, you can call it inflow plane, or

inflow test plane, ……. Input_your_desired_Name_plane ……etc.

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Step27: Just by pressing on the derived parts plane section, the section will be highlighted in purple

showing the needed slice plane.

Figure27: Taking the perspective view of the part helps the user in clarifying that the cross section

plane is conducting on the required parts of the mesh.

That’s the end of the first tutorial I hope that was helpful please feel free to contact me regarding

any mistakes or recommendations for the tutorial.

Ahmed Al Makky

[email protected]

http://www2.warwick.ac.uk/fac/sci/eng/pg/students/esrhaw

mailto:[email protected]