How to define a wave port in HFSS transient analysis?

I am doing a transient analysis on a horn antenna using HFSS transient. I know that I need to define a so-called ground plane to which the wave port is attached and that is how I would be able to...

27 July 2020 552 3 View

I am searching for "Model order reduction of nonlinear systems". how can it be possible?

I have a complicated 4th order nonlinear differential equation for a system. I am going to design a nonlinear controller for this system. is it possible to reduce it into a second-order system?...

28 June 2020 930 14 View

Is it possible to model the non-Newtonian Lubrication in comsol?

I want to know that is it possible to model the Bingham lubrication in Hydrodynamic module or thin fluid film module? or mabey I should use another module? #nonnewtonian lubrication #Comsol...

26 June 2020 1,715 5 View

How can i simulate the non-Newtonian lubricant for Hydrodynamic bearing in Comsol multiphysics?

In Comsol multiphysics, the bearing can simulate by Hydrodynamic bearing or thin fluid film module. But when I want to add a constitutive equation for viscosity the shear rate can not appear as a...

15 June 2020 4,948 3 View

No title

I am familiar with LSTM neural networks which work well for energy demand forecasting. However, I would like to compare its performance with the two other machine learning methods. What are the...

14 September 2019 6,867 7 View

Which face of cellulose acetate membrane should be used?

The cellulose acetate membrane which I have, have different faces apparently. One side of this membrane is glossy while the other side of it is matt. I want to use this membrane for vacuum...

26 August 2019 3,492 3 View

How calculate stacking-fault energy?

Is it possible to calculate stacking-fault energy by using XRD for steels?

02 June 2019 9,548 3 View

For learning and using Machine leaning is it necessary to have a computer science background?

Hello, I have seen interesting studies on energy which use Machine Learning algorithms. As I have a mechanical engineering background I am not sure if I can learn and use machine learning. Is it...

11 May 2019 1,716 4 View

Is Aspen able to do the optimal design of a heat and mass integration network?

I am going to find the optimal heat and mass integration in a plant. In this plant different streams have variable flow rate over time. I am going to determine the optimum heat exchange network...

19 March 2019 3,535 1 View

How to build a reverse osmosis water purification setup?

I want to know exactly that how can I build a reverse osmosis setup with a circular layer of membrane which should be between the feed and the permeate part? What kind of apparatus should I use...

09 March 2019 5,836 4 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

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

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View