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

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

How two melting peaks in DSC of polypropylene can be merged into one crystallization peak?

The figure shows DSC cooling (blue) and 2nd heating (green) curves (step: 10 K/min) for a commercial sample supplied as Atactic Polypropylene (APP). The heating curve illustrates two major...

03 March 2021 5,857 3 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

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

Issues with Permeabilization during Flow Cytometry?

Hello Everyone. Currently I am working to characterize macrophages in the myocardium after ischemia-reperfusion injury in rats. Due to the low total cell number isolated from rat hearts I can...

01 March 2021 3,867 3 View

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

What do I do with DLS peaks that are from the buffer?

I'm looking at the aggregation of my protein sample using DLS. Unfortunately, my buffer (20mM HEPES) also results in a set of peaks. These are at approximately 1 and 1000 d.nm. The lowest peak...

01 March 2021 9,015 2 View

How to assign different material properties to each element in Abaqus ?

Hello, I am writing a python script to generate my model and write the input file. The problem is I have 1000 elements in my mesh and I want to assign different material properties to each...

01 March 2021 9,511 3 View

How to define tie constraint between rigid body and another part in dynamic explicit model of Abaqus?

Hi dear researchers I connected a rigid body into the part of my structure by tie constraint and then I added displacement to rigid body, in static general step every thing is fine and these two...

28 February 2021 3,442 2 View

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 1 View