CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > Siemens > STAR-CCM+

Error Messages: Self intersecting faces, Solid Part is not closed, Floating point.

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   March 3, 2016, 19:46
Default Error Messages: Self intersecting faces, Solid Part is not closed, Floating point.
New Member
Join Date: Mar 2016
Posts: 2
Rep Power: 0
bigtoasty is on a distinguished road
So I have been working on this project for a while. It is a thermal analysis of a thermo-forming/blow forming machine. The process includes preheating up a plastic tape(up to 200*C) , high temp tape moves on to the next stage which is the front of the male mould. Pressure of air is then applied to the opposite side of the tape blowing it into the mould and deforming its shape. I have the model of the tool and the deformed tape. Mould part is set to 75*C which also aids in cooling the tape and also the cycle time of the system happens within 500 miliseconds. I wanted to run a thermal analysis on the system to observe the following:
The effect in of the Preheat element on the mould (Preheat and mould is near each other)
The heat transfer between the tape and the mould during the cycle.

What I have done so far:
Import stp model to star, Created a subtract part of a block to the tool(this will be the external fluid part) modelling so that the effect of heat transfer between each part can be observed.
Boolean Imprint for contacts/interfaces between parts
After this part I have tried meshing it using a polyhedral mesher, surface remesher and prism layer for the fluid part. For the solid part I used polyhedral mesher and Surface remesher.

When I create the volume mesh I get the following error due to:

Self intersecting faces.
Solid part is not closed.
Error due to a floating point.

Any advice on how to deal with these errors?
Ps. Im able to mesh the parts without the fluid region that I added, but the heat transfer only affects the connected faces. So maybe there might be a way to model the heat transfer between parts without using a subtracted block as fluid interface between parts? Any suggestions?
Thank you
bigtoasty is offline   Reply With Quote

Old   March 4, 2016, 06:05
Join Date: Sep 2011
Posts: 40
Rep Power: 13
Eike is on a distinguished road
As a first step you could do an analysis via "Surface Repair". Set "Geometry Description" to "Latest". If you keep "Root" you may get the status before the imprint.

Btw, did you set interfaces between solid and fluid and solid/solid if they are connected? You'll need them if you want to model heat transfer and get a conformal mesh ...

Attached Images
File Type: jpg 001.jpg (66.2 KB, 161 views)
Eike is offline   Reply With Quote


floating point error, self intersecting faces, thermal analysis

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
[snappyHexMesh] Add Mesh Layers doesnt work on the whole surface Kryo OpenFOAM Meshing & Mesh Conversion 13 February 17, 2022 08:34
decomposePar -allRegions stru OpenFOAM Pre-Processing 2 August 25, 2015 04:58
Compressor Simulation using rhoPimpleDyMFoam Jetfire OpenFOAM Running, Solving & CFD 107 December 9, 2014 14:38
[snappyHexMesh] snappyHexMesh and cyclic boundaries Ruli OpenFOAM Meshing & Mesh Conversion 2 December 9, 2013 07:51
CFX4.3 -build analysis form Chie Min CFX 5 July 13, 2001 00:19

All times are GMT -4. The time now is 07:56.