What is the difference between momentum flux, momentum flow and momentum diffusion?

Please explain the difference between each of these terms with physical equations and units.

07 August 2018 913 0 View

Frictional Losses in a Radial Flow?

I have a non-newtonian fluid flowing radially-outwards on a horizontal flat plate. The flow is assumed to be laminar. How can I calculate frictional losses between solid-liquid interface?

04 May 2018 3,545 3 View

Height of 3D Dome at location other than the centre (MATLAB)?

Hello, I have generated this 3D dome surface using MATLAB using the SURF command. I need to find the height (Z) of the dome at parts other than center (Like for example at (X=-2000, Y=-2000,...

04 May 2018 5,619 3 View

How can I effectively find diameters of the circle in each frame using DIP in MATLAB?

Hello, Good Day! Please refer to the GIF image below. I am trying to measure the increasing diameter of the circle here. I have to do it using MATLAB/ SIMULINK. The red stripes can be classified...

03 April 2018 6,565 6 View

Can Abaqus Model a flowing cement paste? i.e, a non-newtonian fluid?

I need to simulate a flow test experiment in ABAQUS, I am new to CFD. Can Abaqus do that? Please check the link below for a better idea https://www.youtube.com/watch?v=QfLRm3JB6PM

02 March 2018 1,336 2 View

Isoparametric mapping for quadrilateral elements?

I am a bit confused regarding how mapping from parent element to isoparametric element is done. I am attaching a jpg file with two mapping regimes. With reference to the photo, which one is...

11 December 2016 3,196 4 View

How does the compressive strength of reinforced concrete affect the ductility?

As per my previous concepts, the ductility of concrete in uni-axial compression decreases as the compressive strength increases.(As from the stress strain diagram, a low strength concrete fails at...

03 April 2016 6,702 11 View

Need help with mechanics problem (Principle Stresses)?

02 March 2016 5,532 5 View

How to extract Y values from the given value of X in excel?

Please find the image below, It might be a basic level question I have created a graph in excel for the given values of X and Y, its a curve with increasing and decreasing slope is there a way I...

04 May 2015 6,083 1 View

Can you help me with Issues while Modelling Concrete Beam in ABAQUS?

Dear All, I am modeling a Reinforced Concrete Beam using a smeared cracking model in ABAQUS, and simulating a four point bend test(2 point loading), and currently my model is too stiff compared to...

03 April 2015 8,807 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

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 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