How to get "Center of Gravity Location" in a UDF in Fluent?

Hi there, Center of Gravity Location is a parameter accessible in the 'Dynamic Mesh Zones' window inside the Fluent. I'd like to know what's the command to get "center of gravity location" in a...

09 October 2017 1,517 1 View

How to apply dynamic contact angle to a VOF problem?

I'm using VOF in Fluent to simulate impact of a falling droplet onto a solid particle in mid-air (pls see the picture). Instead of using a constant contact angle (CA), I want to apply a dynamic CA...

09 October 2017 1,476 2 View

How to calculate viscous dissipation in Fluent?

Using VOF ith a laminar model, I'm simulating collision of a droplet and a spherical particle. The particle moves very fast (~7 m/s) and so penetrates into the falling droplet and deforms it to a...

04 May 2017 7,423 3 View

Why "Mass Integral" calculates differently compared to "Mass"?

In a droplet impact onto a stationary particle, I want to calculate mass conservation of VOF method (before impact vs. after impact ends). For that, I use Reports => Volume Integrals window. In...

02 March 2017 5,235 7 View

Does Fluent realize the particle mass here?

I'm simulating droplet impact onto a moving particle (axisymmetric VOF+6DOF in dynamic mesh). I tried to increase the particle mass in UDF by a factor of 1000 (for the same particle size). But, as...

31 December 2016 6,328 7 View

How to create an axisymmetric mesh with a semi-circle (as an spherical particle)?

For simulating a droplet collision onto a moving particle, I use a semi-circle as my particle in an axisymmetric solution. However, I don't have just one line as the 'axis' of domain and particle...

31 December 2016 9,096 6 View

How can I resolve this axisymmetric mesh problem?

I want to do an axisymmetric simulation of a head-on collision between a falling droplet and a spherical particle. However, as you can see in the attached figure, dynamic mesh fails to follow the...

31 December 2016 5,468 11 View

How to define mass of a particle in Fluent?

11 December 2016 8,068 8 View

How to assign an initial velocity to a wall in Fluent?

I'm simulating a particle collision onto a droplet in Fluent (attached Fig.). Particle is defined as a 'wall' and when I'm using 'Dynamic Mesh' with 'C.G. Vel= -6', the simulation runs well....

11 December 2016 4,392 0 View

How to assign an initial velocity to a moving wall in Fluent?

I'm simulating collision of a droplet and a moving particle in mid-air. The particle is launched towards the droplet while the drop is moving in opposite direction (pls. see Fig. 1)For solving...

10 November 2016 9,249 3 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 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

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

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

Can Virtual Servers (remote dekstop manager) run heavy ANSYS Fluent CFD simulation ?

I have a virtual machine. My host Pc specs are not that good thats why i went for virtual servers. so basically my host pc has 8gb of ram with nvidia quadro k2200 4Gb DDR5 GPU ,processor intel...

01 March 2021 8,415 1 View

How to increase mesh quality of a cfd model in ansys fluent?

How can one improve mesh skewness, orthogonality, aspect ratio?

28 February 2021 7,730 3 View

High aspect ratio hexahedral mesh optimization solver?

I am interested in evaluating mesh optimization solvers that converge to high aspect ratio unstructured hexahedral grids. In other words, I am interested in a solver that optimizes warpage,...

26 February 2021 7,279 2 View

How do you mesh a thin solid in Fluent?

Hello, I have used the shell function on SpaceClaim to create thin solids for the model I am studying. These are contained within an enclosure for my study. I chose this approach as it avoids the...

24 February 2021 8,856 3 View

How to extract the y+ value from fluent ?

I am doing a 3D steady simulation of a wind rotor using Ansys Fluent. In order to have a y+ of 1, I created 10 inflation layers using total layer thickness method, and I started a first...

23 February 2021 2,819 3 View

Help with assigning pressure boundary conditions in FLUENT on a large structure?

Hello, I created a very tall tower (>1000m) and applied pressure boundary conditions at the inlet (bottom) and outlet (top) that correspond to the pressure are their relative altitudes....

22 February 2021 9,972 4 View