Negative Temperature in welding simulation in Abaqus !?

I'm working on a fusion welding model in Abaqus 6.14. In my model surrounding temperature (predefined temp.) equals 25 C; But when I run it, it shows an unexpected decrease in temperature, making...

12 September 2020 7,395 4 View

Why Mean Absolute Percentage error is too high?

I would like to make a comparison on the performance of some regression algorithms according to different performance criteria, including Root Mean squared Error (RMSE), coefficient of...

10 July 2020 5,463 7 View

Where can I find thermal properties of Polyfin Paraffin wax?

Hello everyone, I am trying to model the melting process of a paraffin wax named "Polyfin" in Ansys Fluent. In order to do this, I need to define the thermal properties of Polyfin to fluent,...

30 June 2019 6,028 3 View

How to find dynamic coefficient of bearing or seal with Ansys CFX?

Hi everybody In order to rotordynamic analysis at first we solve Reynolds equation (also perturbed Reynolds equation) to find the pressure distribution and consequently we determine the stiffness...

24 December 2018 5,549 3 View

Is there any open software available for molecular dynamics in presence of "electric field"?

Is there any open software available for molecular dynamics in presence of "electric field"? In addition, I want to add some conducive three dimensional shapes around the molecule. Thanks for...

17 January 2018 5,329 3 View

Boundary Conditions in Atmospheric DBD Plasma ?

I realise my modelling under COMSOL. The boundary conditions (see attachment) that I imposed on the edge of my electrode (these walls are an outlet to the free air in reality) seem to influence...

28 November 2016 4,839 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

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

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

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View