SURFACE WRAPPER USING STAR CCM+ - Students Project

1) Need of wrapping

We do wrapping when there is lot of surface errors & which cannot be rectified in less time

For example - A ford engine before & after surface wrapping

Surface errors before wrapping

Surface errors after wrapping

If you see the above photos in the first photo we have a huge number of errors if we try to repair it, it would have taken a lot of time & if you see the second photo there are no surface errors & time consumed is relatively lesser than of that of the surface repair.

2) Surface wrapping for a engine

Aim

To surface wrap a ford engine

Procedure

• Open Star CCM+ and click Import Mesh in the toolbar and select the required file from your library.
• Expand Geometry and right click on Operation > New > Surface Preparation > Surface wrapping.
• Right click on Surface wrapper and choose Leak Detection.
• A new window will appear, then choose where the Source Point should, then select Target Point and put it inside the model and click Recompute Template & Paths.
• If there is any leak detection it would appear on the screen, if there is a error choose the corresponding face and fill the hole.
• Expand Surface Wrapping, Expand Default controls & select Base Size.
• When Selected in Properties Window give value as 0.005 m.
• Select CAD Projection below Base size & Ckeck the Project to CAD Check Box.
• Select Volume of Interest and select External.
• Next select Custom Control > New > Curve Control.
• Select Curve Control & in Part Curves select the curves which should be controled according to your need.
• Select Contact prevention > One group contact prevention set.
• Contact prevention will open right click on that & click on Select Part surfaces and select the parts which should have contact prevention.
• Then Right click on Surface Wrapper under Operations and click Execute.
• If the surface isn't wrapped properly,change the parameters and execute again.