Donated text: Master Thesis
 

Dear all,

Just would like to inform that I added my master thesis, titled "Numerical Simulation of the Filling and Curing Stages in Reaction Injection Moulding, using CFX " to the CFD-Wiki:Donated texts.

Abstract: Commonly used methods for injection moulding simulation involve a considerable number of simplifications, leading to a significant reduction of the computational effort but, in some cases also to limitations. In this work, Reaction Injection Moulding (RIM) simulations are performed with a minimum of simplifications, by using the general purpose CFD software package CFX, designed for numerical simulation of fluid flow and heat and mass transfer. The CFX's homogeneous multiphase flow model, which is generally considered to be the appropriate choice for modelling free surface flows where the phases are completely stratified and the interface is well defined, is shown to be unable to model the filling process correctly. This problem is overcome through the implementation of the inhomogeneous model in combination with the free-slip boundary condition for the air phase. The cure reaction is implemented in the code as a transport equation for an additional scalar variable, with a source term. Various transient and advection schemes are tested to determine which ones produce the most accurate results. Finally, the mass conservation, momentum, cure and energy equations are implemented all together to simulate the simultaneous filling and curing processes present in the RIM process. The obtained numerical results show a good global accuracy when compared with other available numerical and experimental results, though considerably long computation times are required to perform the simulations.

Please feel free to send me or post here any comment or question.

Regards,

Rui

Re: Donated text: Master Thesis
 

Hi,

Just would like to say that I've put a better pdf quality of the thesis ( Numerical Simulation of the Filling and Curing Stages in Reaction Injection Moulding, using CFX ) here: Thesis: http://RuiIgreja.googlepages.com/Rui...sterThesis.pdf (6 MB) Abstract: http://RuiIgreja.googlepages.com/Abstract.pdf (160 KB)

And I would like to add I think it's a shame no one followed Glenn's sugestion posted a while ago in the CFX forum: http://www.cfd-online.com/Forum/cfx_...cgi?read=21418

Regards, Rui

Rui,

Thanks for the valuable info shown in your thesis. I am new in the workbench platform (ANSYS 14.5). I am dealing with the same problem, I need to implement the Kamal Sourour model in ANSYS CFX. I am simulating an epoxy resin that flows and hardens in a pultrusion process.

What is the best why to implement the extra variable of degree of cure C in ANSYS CFX? Did you use Fortran, Matlab or any other external code? Did you manage to modify the equation of energy and species by simple manipulating the CCL language in ANSYS?

I would really appreciate any thoughts from your side since I have not been able to accurately simulate my system, because the curing reaccion missing.

Thanks

Thanks! :)