How Can I define 3*6 matrix in COMSOL?

07 August 2015 9,020 2 View

Can i simulate experimental work on quantum cascade leser with comsol?

Hello everybody I want to simulate this thesis with COMSOL. (Heat transfer in solid and electromagnetic wave envelope). is it possible? I don't know which Q and T , I should use with what...

04 May 2015 1,336 0 View

How can I solve this error (Failed to find a solution.Singular matrix.Returned solution is not converged.)?

Im working on three modules to gather (semiconductor, electrostatic, heat transfer in solid) for Schottky diode. when COMSOL solve them to gather , has this error: (Failed to find a...

04 May 2015 7,035 4 View

How can i solve two physics togather (electromagnetic wave and heat transfer in solid) in COMSOL5?

Hello everyone, How can i solve two physics togather (electromagnetic wave and heat transfer in solid) in COMSOL5? and which study can solve both of them? thanks alot

04 May 2015 9,725 5 View

Where should I use port in this COMSOL geometry?

04 May 2015 2,898 1 View

Whats does the following error mean in COMSOL: Failed to find consistent initial values?

Hello everybody Im working on plasma, whit helium gas and time-dependent study. its make this error:Failed to find consistent initial values.Last time step is not converged. can anybody help me,...

04 May 2015 1,349 9 View

How can I simulate Second Order Susceptibility?

I want to simulate Second Order Susceptibility, which method and software is better? Thank a lot.

01 February 2015 6,974 0 View

Relative permeability of graphene?

09 October 2014 9,817 11 View

Second harmonics generation - graphene?

07 August 2014 4,585 6 View

What is the refractive index of graphene?

Does anyone know the refractive index of Graphene?

05 June 2014 9,750 1 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 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

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

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View