is there a way to show how materials are removed continuously under the influence of a heat flux in COMSOL. Say for example, consider a 2-d plate(10mm by 10mm) and a heat flux of intensity 10^9 W/m2 is given on the top face in a length of 1mm for a period of 30 micro seonds. Let us consider the melting point of the plate material is 1500K. Under the application of the heat flux, heat will be transferred to the work piece and a temperature profile will be generated. How can we model so as to remove the section of the material that is above the melting point once it reaches the melting point even before the actual completion of the time frame over which the heat flux is supplied.
Hallo,
First you have to model a phase change behavior using phase change node in the heat transfer interface. This is done so that the melting enthalpy and temperature dependent material properties is taken into consideration.
I advise you to simulate the first part before going to the second one.
For the second part, set up a deformed mesh interface and describe the surface deformities as temperature dependent function (i.e., remove if T>T_melt) along the Euler space, I believe this link will help you in setting that:
https://www.youtube.com/watch?v=B6z8zVBtixk
Finally, I want to point out that although your model set up correctly, you need a bit of playing around to get the correct time-stepping algorithm and step-size. Not forgetting to mention the time-dependent mesh consideration as mentioned in here:
http://www.comsol.com/community/forums/general/thread/16808/
Good luck and have fun modelling.
Regards,
Zaid
- Badges
- Science topic