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

Is there any relation between strain rate and shear rate?

I have a a strain rate as well as the shear rate of a flowing material, do these quantities have any relation? Can I compute the viscosity using these?

04 May 2018 6,871 0 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

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

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

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

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

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

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View