Recent content by Skyeagle

Hi guys, need your help on the below question: There is this parameter known as thermal diffusivity. Thermal Diffusivity = k/ p*C, where k= thermal conductivity, p=density and C= Heat Capacity. The thermal diffusivity value for Steel is 20.11 um^-2/s (melting point at 1810K) and the...

Hi guys, Just like to check with you: How does heat capacity, density and conductivity plays a part in the melting of a certain material. I mean, if a material has a lower heat capacity, while other factors are the same, does that mean it will melt faster compared to one with a higher...

Hi guys, While working with coordinates, I notice that for those that deal with axi-symmetry, the R-Z plane is used. May I know what's the difference between the XY plane and the RZ plane? I mean is 1 unit along the X-axis the same as 1 unit along the R axis or is there a conversion...

Hi, Anyone can recommend any website that shows the material properties (such as reflectivity, heat capacity, density, heat conductivity) of both non metals and metals? Thanks in advance.

PerennialII, How do I go about doing it? Or would it be possible to send me a comsol file of how the ALE works? I am having trouble on setting the parameters...

Hi guys, I have a question in using comsol software, particularly on heat transfer. Its a 2D geometry. A rectangle whereby heat is applied on the top surface at the particular point and the 3 sides are thermally insulated. As more heat is applied over time, a hole will be created. A...

I want to create a material in COMSOL. Let's assume its rectangular in shape. There is this part where when we open the COMSOL, there is a drop down box whereby we can choose "2D" or "Axial Symmetry (2D)" Whats the difference between the 2?

And to make things easier, I will choose the materials in the drop down box in COMSOL.

I am only doing a simple simulation whereby I assume that the laser is the heat source. Upon interataction with the material for a specified time, the material will reach melting point at that particular location. I assume that the material is vapourised by the laser and there will be no...

Oh dear, this really sounds difficult. Sorry, my mistake. I did choose transient analysis so as to plot the temperature over time. What I am looking at, is just like what you have mentioned, the time and temperature that the local area begins melting given a specific laser intensity...

Hi Mech_Engineer, The thing is that I am very new to the COMSOL and my project is to simulate this laser drilling. I have been trying to ask around on how to work out the simulations as well as entering the correct syntax at the correct places. Right now I am using Conduction>Steady...

Does anyone know how to simulate the pulse laser drilling? I am trying to use Comsol or MATLAB to simulate the laser interaction with a specified piece of material. Following, plot the time (X axis) versus temperature (Y axis) diagram to see the temperature distribution. Any help in...

PerennialII , Thanks for the reply. yup. I got the waveform as per the syntax that you have given. Right now I need to generate the temperature profile which I am facing some problem. Its not what I am expecting.

Hi guys, I found this forum by chance. Was wondering if anyone could help out with my problem. I am very new to this COMSOL and I am required to tackle a problem. I am required to simulate laser drilling onto a material using comsol to obtain the heat transfer pattern. I have chosen...