How can I interpret 2 UDFs in FlUENT?

More Ijaz Fazil Syed Ahmed Kabir's questions See All

I have get this error when i calculated the geometrical optimization for prco3, it takes 12 hours until gives this message in the outputfile?

Fatal error in MPI_Allreduce: Other MPI error, error stack: MPI_Allreduce(1628)......: MPI_Allreduce(sbuf=000002459254A180, rbuf=000002459F86A140, count=4851, MPI_DOUBLE_COMPLEX, MPI_SUM,...

09 August 2024 7,615 1 View

Why Do TDS and EC Increase with Larger Wastewater Volumes, While BOD and COD Decrease?

I have carried out MFC experiments on three different volumes, 50, 500 and 1000 mL of wastewater. Results after MFC treatment shows that TDS and EC are more in larger volumes of water i.e. TDS and...

09 August 2024 9,621 0 View

How to set the environment variable for incorporating the GD3 dispersion in G16 for performing calculations using the OPBE functional?

I have incorporated the dispersion effect for the OPBE functional by specifying the S6, SR6 and S8 parameters for GD3 in Gaussian G09 package. For this purpose, I have defined the environment...

05 August 2024 1,494 2 View

How prion can cause disease?

how is prion can cause disease

01 August 2024 250 1 View

Has anyone used Jump 2 before?

Jump 2 is the 1st app scientifically developed to measure your jump height.

31 July 2024 8,194 0 View

Help on understanding the implementation of Mori Tanaka method on MATLAB?

I am new to Micromechanics and having similar problem with understanding the implementation of the formula's. I would appreciate if anyone can guide me on how to go about getting a scalar value...

30 July 2024 969 0 View

How to we see transcription activity of the bhlh79 family is at the N-terminal or C-terminal?

I'm a PhD Student. From Northwest Agriculture and Forestry University China. My Problem is this I start my work on bhlh79 transcription factor gene. I do my Y2H 5 time but the colonies appear on...

30 July 2024 1,412 8 View

I need a reliable source or an example supported by excel sheet to understand Fuzzy Vikor?

27 July 2024 5,916 1 View

What are the most PROBLEMS of HYBRID nanofluid in oil industry ?

explain your idea

23 July 2024 1,197 0 View

Is there a good macro photography kit for on-site metallurgical investigation?

I am looking to purchase a photography kit for onsite metallurgical investigations, such as capturing photos of worn areas, hot tears, cold tears etc. Could anyone suggest me a good...

22 July 2024 3,490 2 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

Ijaz Fazil Syed Ahmed Kabir

Hi yan Thank u....

Rajeev Kumar Singh

Why in first place it has to be two separate UDF, in fact you should put all the macro in one C file and interpret it

Thanks sir. I have done it, I created two seperate UDFs for two different boundary conditions. Now I have put all in one

Andrea Boghi

You cannot "Interpret" two separate UDFs, but you can "compile" them.

Lev Ivanovich Kurlapov

I think it may be calculate as in article in attachment

Navid Izaddoost

I have same problem , I need two udf for two boundary , when I putt them in one , how can I define that wich boundary use wich part of udf ?

Nagesh Dharavath Nagesh

please can anyone share the UDF code for simulating two phase flow in a closed tube (thermosyphon heat pipe)