20 Questions 33 Answers 0 Followers
Questions related from Akash Meena
Hello everyone, If you are familiar with the MTDC heat source, I would like to know how would I choose the value for re, ri, ze and zi ? Is there any specific method or it should be based on...
27 January 2022 9,835 0 View
Hello everyone, Just a general doubt, I have seen a lot of papers on welding using Gaussian heat-source to model their welding process. But either it's a plasma arc welding or laser welding,...
27 December 2021 4,360 4 View
Is there any way to find a latent heat of fusion and vaporization of ZrB2-SiC composite? Any lead would be appreciated. Thank you.
02 November 2021 5,179 1 View
Hello everyone, I have one basic question I am struggling with about Molar mass. Can we find the molar mass of a composite like we find of molecules? For example, I have 60volSiC-40volZrB2....
02 November 2021 5,544 0 View
Hello everyone, There is a porosity formation at the end of the process right in the middle of the workpiece. I know porosities formation depends on several factors such as laser power,...
14 August 2021 1,052 6 View
Hello everyone, It is easy to plot a ternary phase diagram of elements. But I don't see any tutorials plotting ternary phase diagram for compounds/alloys/ceramics like (SiC-ZrB2-ZrC). If...
15 April 2021 8,911 10 View
I am trying to model Goldak heat source with COMSOL exatly as shown in this presentation. https://www.comsol.co.in/paper/download/305901/Tschoepke_presentation.pdf Attached picture shows the...
19 December 2020 3,644 0 View
Hello Everyone, I want to apply fresnel absorption in my laser keyhole welding model. I have seen fresnel equations on the COMSOL websites. It's kinda different from the one I see it in the...
09 September 2020 10,091 1 View
Hello Everyone, I am trying to apply the convective heat flux i.e., -n.q= h(T_ext-T) where "q"=-k ∇ T So, If my geometry is selcted as "Form Union(fin)", I cannot select the boundary as shown...
08 July 2020 10,179 5 View
Hello Everyone, I want to write the expression for interface normal. How can I write it? Cannot find it properly in "Equation view". Please see the attched figure. Please comment if someone...
14 June 2020 5,594 3 View
Hello everyone. It's about the level set method. So, I have defined the value of phils as 0 and 1 as shown in the attached figure. The interface is at phils =0.5 (automatically). I want to define...
06 June 2020 3,643 15 View
Hello everyone. I want to apply the Heaviside function on the delta(phils) as shown in the figure. Can I apply the step function as a Heaviside function shown in the figure?
20 May 2020 525 7 View
Hello everyone, (Question about gaussian heat source) It might be a very basic question but I am having a hard time imagining the Gaussian heat source. I want to apply the heat source through the...
08 May 2020 5,246 0 View
Hello Everyone. This might be very easy but I cannot figure it out whats wrong. Equivalent visosity: "((mus)*(TTl)" It turns to yellow text>> unexpected unit of input. >> (mul and mus...
26 April 2020 7,735 6 View
Hello Everyone, P=2000K Heat Source: Gaussian Please see the attached figure. In Fig 1: Region 2 is selected only and and the final maximum temperature is about 500K only. In Fig 2: Both...
23 April 2020 9,845 0 View
I am stuck on this for days. Any help would be appreciated. The following error has shown: Repeated error test failures. May have reached a singularity. Time: 0.00052653794651556622 s. Merged...
14 March 2020 6,038 8 View
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01 February 2020 6,229 4 View
I am trying to add the mass flow in the transport equation of the level set method. Please help me how to edit this equation.
22 January 2020 6,198 2 View
Hello everyone, I have already applied the Gaussian heat source and the next step is to apply recoil pressure in order to make the Keyhole. I have read many papers but still not feeling...
30 December 2019 4,929 1 View
I haven't seen any proper and direct discussions regarding this, so here's my attempt: I have spent two years developing a complete 2D laser keyhole welding model in COMSOL. Although I have made...
01 January 1970 8,839 3 View
