Why does the yield stress increase with dislocation density? Even though without any dislocations, the strength would be even higher?

I cannot understand that increasing dislocation density increases the yield strength of material but how?

11 December 2018 1,832 5 View

I am working on membrane distillation model (DCMD) in COMSOL.My Velocity profile is correct but my temperature profile is defective?

My velocity profile is just coming according to the concerned research paper but my temperature profile is not coming according to it and is not changing in the region. The temperature value is...

11 December 2017 1,482 4 View

I have a problem in MATLAB program.I have made a program for Direct Contact Membrane Desalination (DCMD). The answers are deviating a little bit?

I have attached my Matlab code and the reference paper through which i got the idea of making the code (Page # 6).My temperature values are deviating upto values of 10. Kindly tell me what is the...

10 November 2017 9,389 0 View

Is it necessary that amplitude of Forced damped vibrations come to zero after some time. I have made a simulink program for vibrations of washing mch?

I have attached my simulink/Matlab model. Kindly tell me if there is any thing wrong with it?It is modeled on the basis of forced damped vibrations. The amplitude of model does not come to zero...

10 November 2017 6,551 4 View

Is there any material that has high specific heat as well as high thermal conductivity?

We are trying to integrate such material in membrane desalination project.

09 October 2017 1,831 3 View

Hello everyone, i am working on a membrane desalination project in COMSOL.Kindly tell me which physics model will work for it?

Actually i am new to COMSOL so don't know much about it. I want to analyze the heat and mass transfer simultaneously so kindly tell me how to proceed. It will be a great help.

09 October 2017 822 3 View

Hello Everyone. I am doing membrane desalination project and i want to draw the porous membrane. Which software should i use?

Actually i want to do FEM analysis so i want to make porous membrane in software

09 October 2017 7,576 6 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 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

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 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

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 2 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

Multi effect distillation modeling in EES?

Dear colleagues If anyone has a model of multi-effect distillation in EES or MATLAB software, please send it to me.

24 February 2021 7,282 1 View