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

Could you recommend any books about Number Theory?

Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.

03 March 2021 7,174 5 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

SDS page software for analysis?

I did sds page to determine the difference in protein expression between 3 types of vaccine , but i don't have scanner or densitometer available. . so i wonder if there is a software to analyze...

02 March 2021 6,270 3 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

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 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

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

Exit velocity of natural gas from pressurized tank?

Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...

26 February 2021 6,253 3 View