April 7, 2023 at 5:39 pmMohamed HASSANSubscriber
I am interested in simulating the transient temperature field of the melt pool and the heat-affected zone during the LPBF and DED.
Which Ansys Modules is suited for this?
Is there any material to start with?
April 10, 2023 at 1:31 pmAshish KhemkaAnsys Employee
Please see if the following link helps:
Prediction and validation of melt pool dimensions and geometric distortions of additively manufactured AlSi10Mg | SpringerLink
April 16, 2023 at 12:52 amMohamed HASSANSubscriber
Thank you for your prompt response and for providing the reference to the paper on predicting and validating melt pool dimensions in additively manufactured AlSi10Mg. I have reviewed the paper, and while the FE thermomechanical model using Abaqus is certainly insightful, it appears that their approach is focused on the thermal analysis of a meso-scale model without taking into account fluid dynamics, right?
I am particularly interested in simulating the transient temperature field of the melt pool and the heat-affected zone in LPBF and DED processes using computational fluid dynamics. I believe considering phenomena such as Marangoni flow, capillary flow, recoil pressure, and melt pool turbulence, as well as modeling two-phase flow, phase change, and the volume of fluid (VOF) method can significantly enhance the accuracy of our simulation results, right?
To this end, I would like to inquire about Ansys modules specifically designed for CFD simulations of additive manufacturing processes, including modules that can handle complex multiphysics interactions such as fluid-structure interactions, heat transfer, and phase changes. Furthermore, I would appreciate any learning materials or tutorials that could help me get started with these Ansys modules.
Looking forward to your guidance on this matter.
Best regards, Mohamed
April 17, 2023 at 3:27 amAshish KhemkaAnsys Employee
Thanks for the update. I will ask CFD members to look into this and may be forum members with expertise in CFD can comment more on this.
April 19, 2023 at 12:49 pmSRPSubscriber
In ANSYS Fluent, multiphase model that best represents the process. For DED, the Eulerian-Lagrangian multiphase model is commonly used. This model solves the equations for the fluid phase (powder) and the particle phase (melt pool) separately. For LPEF, the Eulerian-Eulerian or Eulerian-Lagrangian multiphase model is commonly used. This model solves the equations for the fluid phase (powder) and the gas phase (shielding gas or atmosphere) separately.
To start, I recommed you to please go through tutorial: Chapter 23: Using the Eulerian Multiphase Model (ansys.com)
If you are not able to access the link, please refer to this forum discussion: https://forum.ansys.com/forums/topic/using-help-with-links/#latest
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