How to design a variable area orifice in fluent?

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What is a simple method of measuring porosity of air filters used for cars?

The porosity for solid materials can be easily measured from the difference in volumes but for the air filter I need a better method than difference in volumes. Thanks.

11 December 2014 9,947 9 View

I have ploted experimental data on xy plot. Can I joint the point to draw graph from them or I have leave the results as points without joining them?

if the answer I can't joint them to draw a line, why?

08 September 2014 815 3 View

Can anyone help with experimental paper on Heat transfer from hot surface to a vertical jet of gas-solid two-phase flow?

We want to see the effect of increasing the solid phase (mass flow rate) on heat transfer for the same diameter of solid particle. we also want to see the effect of changing particle diameter on...

31 December 2013 6,164 2 View

Is it possible to have a negative entropy values for CO2?

I have a pressure-enthalpy chart for Co2 with negative values.

09 October 2013 1,929 18 View

Problem with Two-phase simulation?

Hello; I am conducting a CFD study on two-phase flow in a separator, utilizing refrigerant as the working fluid. For this study, I have implemented pressure inlet and pressure outlet boundary...

25 July 2024 2,309 5 View

How to introduce on fluent the optical loss of the wall due to the reflection of the plate towards the environment ?

"When solar irradiation reaches a surface, some of it is absorbed while the rest is reflected. Part of the light absorbed by the surface transforms into heat and increases the module's...

13 July 2024 8,621 5 View

How to add a mass source term in the continuity equation?

Hi, I am trying to model laser cladding in Ansys FLUENT. There are two phase: one is base metal surrounded by an inert gas (shown in the image). I want to add a cladding layer of the same metal....

07 July 2024 1,182 8 View

Why i can't get access to isosurface in fluent?

hello everyone i get into fuent and i select the result icone then i try to create an isosurface but the button is gray so i can't choose it. what's the problem? any suggestion.

03 July 2024 5,418 4 View

How to solve the question of ansys fluent?

Regarding the system coupling issue where the update of the solution component fails, the system coupling update for fluid flow (Fluent) triggered an exception: "Update Solution Failed."

30 June 2024 7,894 1 View

How to converge PEMFC in Ansys Fluent?

I am simulating 1 cell of PEM with an area of 50 cm². The mesh has an orthogonality of 0.2 for the channels and bipoar plates (polyhedra) and a quality of 1 for the active zones (hexagonal). The...

26 June 2024 2,358 0 View

What is the exact mathematical formulae and the C++ code of EMMS drag model that is used and applied in ANSYS Fluent 2023?

EMMS - Energy Minimization Multi-Scale

18 June 2024 5,857 2 View

How to compile a udf in Fluent to import hourly weather data and update the boundary condition based on it ?

Hello all, I've compiled a udf which reads velocity data with corresponding time stamp from a .csv file using DEFINE_ON_DEMAND macro. Then, I use DEFINE_PROFILE to define an inlet velocity profile...

14 June 2024 6,480 0 View

Fluid flow through copper tube?

What does it mean meshed wall and shell conduction with or without run-out method use to meshing copper tube in Ansys fluent?

07 June 2024 9,030 3 View

How to address gradient discontinuities in CFD - Ansys Fluent?

Assuming I have three domains (three cubes e.g.) placed side by side, the electrical potential equation ( which I am specifying as a User Defined Scalar (UDS)) is solved in the left and right...

05 June 2024 4,153 0 View

Franco Concli

Check Dynamic Mesh... with the UDF you can descrive che change in the mesh and than you can use an adaptive dynamic mesh.

Franco

Faik Hamad

thanks Franco,

please, do you more example of UDF.

Laith Zori

You can also use RBF Morph. Its relatively a new feature in ANSYS FLUENT and its user friendly GUI input

Thanks Laith,

please, do have example or guidence to use it.

http://www.cfd-online.com/Forums/fluent-udf/98991-udf-moving-wall.html