If the magnetic direction of any two black holes is made equal. So the capacity of attraction decreases to zero?

If the magnetic direction of any two black holes is made equal. So the capacity of attraction decreases to zero? If it becomes zero. So we can make the ability to magnetize / attract other...

22 December 2020 3,062 4 View

How to find the number of packets in a queue within a device in NetSim?

In a network, I want to set the buffer size of a device and then measure the number of packets in the buffer queue. The number of packets in the queued, dequeued an dropped, I need to calculate...

12 September 2020 4,654 4 View

Apply frensel absorption in COMSOL in laser keyhole welding model ?

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...

08 September 2020 9,943 1 View

Can coefficient of Spearman's rank correlation be used to trace structural changes in a particular industry over a period?

17 August 2020 174 3 View

Applying Convective heat flux in COMSOL Multiphysics in 2D axis-symmetric geometry ?

07 July 2020 10,020 5 View

Is it necessary to keep all the parameters in same unit during Geometric Mean Enzyme activity?

When we go for measuring of geometric mean enzyme activity as per the procedure of Paz-Ferreiro et al. (2012). before calculation of GMEA is it necessary to convert all the parameters in same unit.

01 July 2020 1,772 1 View

Interface normal term in COMSOL during using Multipysics ?

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...

13 June 2020 5,464 3 View

I want to know the BET surface area of nano-rod shaped ZnO nano-particles?

Anyone if you know the BET surface area of nano-rod shaped ZnO nano-particles than please comment. The nano rod-shaped ZnO nanoparticles are synthesized by chemical precipitation method. If...

25 May 2020 8,856 1 View

Heaviside funtion on delta(phils) function in COMSOL?

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?

19 May 2020 310 7 View

Which solar cell technology is suitable for 400nm-1660nm diffused radiation ?

which solar cell technology is more efficient for 400nm-1600nm diffused solar radiation and why?

27 April 2020 3,969 3 View

Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 4 View

Is it possible to do piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch?

How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Piezoelectric coupling between the rectangular substrate and rectangular...

02 March 2021 9,833 3 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

How to find the right number of integration points in second order 3d finite elements?

I am familiar with finite element simulations and numerical schemes like the Gauss Legendre quadrature. I also know that the Gauss integration yields exact values for polynomials up to degree 2n-1...

27 February 2021 6,818 3 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...

26 February 2021 8,480 3 View

How to use measure capacitance change in COMSOL time dependent study ?

I want to measure change of capacitance due to relative displacement between two parallel plates in COMSOL. Distance between two plates changes with time. So I'm using a time dependent study but...

26 February 2021 8,567 3 View

Error in comsol?

Dear respected researchers, while performing CFD analysis in Comsol it's showing like this Error: Nonlinear solver did not converge. The maximum number of Newton iterations reached can...

24 February 2021 249 3 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View