Simulation in COMSOL?

Hi. In simulation I faced with this error: Undefined variable. - Variable: comp1.solid.u_tx - Geometry: geom1 - Domains: 2-3, 19 Failed to evaluate Jacobian of expression. can anyone help me?

21 May 2018 6,200 3 View

How do I get data from wind turbine operation in ice conditions that I want to use for the FAST simulator?

How do I get data from wind turbine operation in ice conditions that I want to use for the FAST simulator?

07 August 2017 4,118 4 View

Do you have any solution for speed up the scientific peer review process?

09 October 2016 7,651 10 View

What are the physical reasons beyond the sediment classification?

04 May 2016 300 0 View

How do you find papers, projects, thesis and etc in your study field?

02 March 2015 123 5 View

How can I create a rectangular domain with uniformly random packed circles with different diameters?

Hi,I want to create a rectangular domain (L*B) with a large number of circles (over 6000) within it. The circles have different diameters, d, in specific ranges (i.e. d_min

07 August 2014 7,596 5 View

How can I develop a fast MATLAB code?

Hi, I know that FORTAN is fast, whereas one of disadvantages of MATLAB is the problem of speed. Matlab code is interpreted during runtime. Languages like C and Fortran are faster because they are...

10 November 2013 9,255 25 View

Which open source CFD are more suitable for turbulence modeling (e.g. LES)?

Hi, I want to simulate the flow field with high resolution turbulence, especially near the wall region. Thanks for taking a look.

06 July 2013 1,440 7 View

No title

05 June 2013 3,342 2 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why the results when using wall thickness and when using shell conduction are different in ansys fluent?

Actually, I am running cfd simulation for a heat exchanger which has two fluids one hot and other one is cold fluid. there is a solid domain between them, which I removed and instead I have used...

01 March 2021 9,537 2 View

How can I integrate a routing protocol in a tiny device (e.g. Raspberry Pi)?

Hi Community, I'm facing the issue of integration/compiling a new routing protocol in a WSN simulator. The final goal is to successfully add, configure this routing protocol in hardware devices...

01 March 2021 9,332 6 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