Negative growth rate in Fluent Population balance equation?

Hi all, I need to add a negative growth rate of particles in the Fluent through UDF. I have written a code and put a negative growth rate instead of positive growth rate. What i see is that fluent...

07 August 2016 7,136 4 View

Problem with fluent macro C_PB_DISCI associated with population balance equation ?

Hi all, Here i am a help from those people having experimence with using PBE in fluent. I was trying to access the PBE bin fractions using C_PB_DISCI(c,t,i). While i am interpreting the udf, it is...

06 July 2016 1,346 2 View

Solution of differential equations with AMG?

03 April 2016 4,056 12 View

N definition shadows previous definition fLUENT UDF ?

03 April 2016 550 0 View

Point and line iterative methods?

Hi all, In point (Gauss-Seidel) method of iterative solution, simple algorithm is applied at each point where the function value has to be determined in successive manner, which essentially means...

03 April 2016 5,688 1 View

Solving pde in the boundary in COMSOL?

01 February 2016 2,517 6 View

How can I write a macro for velocity gradient in fluent?

I am studying a laminar fluid flow through a channel. I would like to get the velocity gradient at each cell. What kind of macro and thread I have to use? Please anyone answer. Regards, vivek.

05 June 2015 8,723 9 View

How can I set the output of fluent in console mode?

Hi all, We know that while fluent solves some problem, it gives outputs like how many more iterations to do? which iterations has been converged? updating of of solution etc. There are some output...

11 December 2014 2,371 2 View

How do I solve a "Ansys.Fluent.Cortex.CortexNotAvailableException" error in Fluent parallel computing?

11 December 2014 1,295 12 View

Solving non dimensional equation in fluent?

Hi all, Is it possible to solve non dimensional equation in fluent? How to do that? Please someone answer me. Thanks Vivek

11 December 2014 3,186 6 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

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 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 eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

How to prevent ANFIS Model from negative prediction values in MATLAB?

I have input and output data set for "ANFIS modeling in MATLAB", and I am getting some negative predicted values of output in testing. However, the predicted values of output in training are...

28 February 2021 3,459 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

How does an AC-DC power supply Flyback Converter Based USB Charger Model using Matlab/Simulink looks like?

I am required to learn about Flyback converters and I got stuck not knowing to full design of the power supply flyback converter Based USB Charger Model using Simulink, especially the design model...

25 February 2021 5,435 2 View

Please. Could you help be in implementing Fractal Discrete Cosine Transform algorithm in Matlab?

I do need the Matlab code of Fractal Discrete Cosine Transform (FDCT). Can anyone who has already implement this code, help me with the implementation of this transform?

24 February 2021 5,602 2 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