How to interchange inlet and outlet BCs during analysis in Fluent?

Is it possible to interchange inlet and outlet BCs during the analysis in Fluent? I have a model that needs to change its boundaries from inlet to outlet and vice versa. Velocity inlet and...

01 February 2018 5,175 9 View

Why output velocity is bigger for coarse mesh than fine mesh in Fluent?

Dear all, I have a simple tube with a flowing hot fluid, modeling with Fluent. I want to study the mesh independency study. My question is why output velocity is bigger for coarse mesh?, and it is...

01 February 2018 7,505 6 View

Why pressure drop is different between Fluent simulation and experimental?

Dear all, I have performed an experimental measurement for pressure drop in a tube which a small fixed structural part is inside of that. When I simulate the same problem using Fluent, pressure...

31 December 2017 2,544 26 View

Is it possible to model a fixed structure inside of fluid in Fluent?

Dear all, I have a fluid that flows within a tube. There is a structure inside of tube which made of different material. My question: is it possible to model this problem in Fluent? or should I...

31 December 2017 9,204 4 View

How to overcome highly distorted elements problem in fluid-structure interaction analysis?

Dear All, I'm involving in a 2-way FSI problem simulation (transient structural + Fluent) which includes big structural deformation. I have used very small time step for transient structural part...

11 December 2017 1,356 9 View

How to obtain stress intensity factors in ABAQUS explicit?

Dear All, I need to calculate the SIF in ABAQUS explicit. It seems contour integral and XFEM stationary crack are not available in explicit module to calculate SIF. Is there any other way to get...

05 June 2017 6,866 7 View

Problem with historyOutput in Python scripting?

Dear All, I prepared a Python script to get initial data from a cae file and modify that for another analysis. To do this, I created a historyOutput command to obtain stress intensity factor and I...

31 December 2016 9,495 5 View

Why crack tip element experiences a decreasing stress behavior in Fatigue loading?

Dear All, I have tried to model a fatigue crack propagation in Abaqus. There is an odd problem here, the stress of the crack-tip element had a decreasing behavior instead of increasing. Does...

11 December 2016 8,316 5 View

Java, C++, or Python? Which one is better for FEM Object-oriented programming?

There are many FE codes that are written in different programming languages, such as Java, C++, and Python. Each of these has its own advantages and disadvantages in terms of object-oriented...

10 November 2016 629 4 View

Tie definition for a repaired plate with composite patch?

10 November 2016 2,382 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

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

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

Why the results when using wall thickness and when using shell conduction are different in ansys fluent?

Actually, I am running cfd simulation for a heat exchanger which has two fluids one hot and other one is cold fluid. there is a solid domain between them, which I removed and instead I have used...

01 March 2021 9,537 2 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

How much pressure we can reduce at the outlet to avoid Reverse Flow?

I am simulating Heat Exchanger. I have tried and tested all the methods to resolve this issue from the internet like refining mesh, improving skewness and orthogonal quality ,extending outlet to...

01 March 2021 6,985 3 View

How to show arrows over the streamlines in CFD-post?

I follow this to make streamlines like the photos attached below: (software- CFD post-processing) First I plot the 2D streamline over a surface "streamline 1". them I plot a vector by the...

01 March 2021 8,668 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 is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View