CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

Modelling Heat Transfer with a slow, discretely changing geometry/mesh

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

LinkBack Thread Tools Search this Thread Display Modes
Old   June 20, 2016, 18:10
Default Modelling Heat Transfer with a slow, discretely changing geometry/mesh
New Member
Adam Lewis
Join Date: Jun 2015
Posts: 1
Rep Power: 0
balast is on a distinguished road
Hi, Iíve been a member for a while, but this is my first time posting. Letís see how it goes.

So Iím trying to model the heat transfer in a SLS 3D Printer. Pictured below is a build box where Iíve cut the geometry along 2 symmetry planes. The green volume is a powder. The powder is heated up to just below the melting point of the powder and then a laser scans the powder in the shape of the cross section of the object that you want to build. This melts that powder together. The part piston (bottom left most object) is then lowered very slightly, a new layer of powder is spread, and the process is repeated. This is repeated many times yielding your finished part.

I want to do a transient heat transfer simulation. Iíll model the convection and radiation on the top surface of the powder as boundary conditions. My problem is that my geometry (and therefore my mesh) must change very slightly as each new layer is added. Do I need to create new geometries for each new powder layer in order to model the heat transfer or is there some better way to do this? I am most familiar with the ANSYS suite of products, but Iím open to other tools as well. Iíd really appreciate it if anyone can point me in the right direction.
Attached Images
File Type: png Capture.PNG (108.2 KB, 4 views)
balast is offline   Reply With Quote


3d printing, dynamic meshing, heat transfer

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
heat transfer modelling of reciprocatingcompressor Ramandeep singh FLUENT 2 April 12, 2015 03:59
Heat transfer from a heated plate using fins pathakamit FLUENT 1 April 30, 2013 04:07
[DesignModeler] Modelling of Heat transfer Turtle ANSYS Meshing & Geometry 5 September 9, 2012 07:30
Solid to Fluid Heat Transfer Modelling Problem bortonj88 Main CFD Forum 3 November 14, 2011 14:21
Convective / Conductive Heat Transfer in Hypersonic flows enigma Main CFD Forum 2 November 1, 2009 22:53

All times are GMT -4. The time now is 02:53.