Well explained and very useful for all CFD engineers.. nowadays most of the training centre asking too much money for advanced CFD analysis..your lecture useful for most of the people

I wosh I had the access to this earlier. Excellent work. This content was actually missing and had to go through the complete Fluent udf guide along with a lot of other things. Excellent Work Brother.

Very well explained. Thank you for this valuable talk.

Thanks a lot for your explanation. This helped me a lot...

I am running a 2D transient simulation(VOF Fluent) in which vapor bubbles are generated at the bottom surface of a rectangular domain that is initially full of water with heat flux given at the bottom wall. I was trying to patch a single vapor bubble by creating a hemispherical region. I can see my volume fraction contour with the bubble after patching a hemispherical region at the bottom of the liquid. The simulation is also running perfectly when I click on "Run Calculation". When I do this same bubble patch operation through a DEFINE_INIT UDF, I can see the bubble getting patched in the vapor phase contour, but the calculation is not running. It is giving the following error in the 1st iteration itself. Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: x-momentum Divergence detected in AMG solver: y-momentum Divergence detected in AMG solver: pressure correction Divergence detected in AMG solver: pressure correction Divergence detected in AMG solver: temperature UDF code #include "udf.h" DEFINE_INIT (init2, domain1) { Message("solution initialised"); cell_t cell; Thread *cell_thread; Domain *subdomain; int phase_domain_index; //Initialisation of heater layer sub_domain_loop(subdomain, domain1, phase_domain_index) { if(DOMAIN_ID(subdomain) == 2) { thread_loop_c (cell_thread,subdomain) { begin_c_loop_all (cell,cell_thread) { real arr[ND_ND]; C_CENTROID(arr,cell,cell_thread); if (sqrt(ND_SUM(pow(arr[0],2),pow(arr[1],2), pow(arr[2],2)))

thank you for this session

When I compile build and load my udf .it is not coming to the boundary condition as I am giving a boundary condition udf. Can suggest me the reason behind it

Hi, great video again. Is there a way to input a data file for heat generation rate for battery cell with respect to time. as battery heat per volume changes as per usage for an EV. if there's a csv file with data of heat gen rate(w/m^3) and time in second. is there a way to input the data and run the simulation

Dear Sir, I have one question about the in inlet and outlet boundary conditions. The molten salt enter a pipe with 5m lenght and 20mm diameter and 500k . The pipe is made of stainless steel. The heat flux is 800,000kW/m2. So how much should be the inlet flow rate up to we receive the outlet tempereture 800K. It will be highly appreciated when you guide e the boundary conditions in inlet and outlet in such a case. Thank you.

how do i use an expression for velocity inlet varrying over time. i have a set of data with velocity and time data. how do input it inside the expression editor in velocity magnitude of inlet

Good video from China 🇨🇳

Our project is to modeling and simulation for friction stir Welding. In this welding process metal is plastically flowing. Inorder to simulate this we need to a udf function that tells about mechanical behaviour of material in plastic. Flowing state.

Single videos is sufficient to understand UDF

how we can add source term in ansys can you please teach i want to analyze flow through porous zone

sir, do you provide any learning course in udf application?

Sir is it possible use matlab for programming of udf's for ansys?

your cfd videos are interesting it is possible that you speak in spanish

DEAR @Sofen I was working on numerical simulation of hydrogen storage using Ansys Fluent, but encountered some difficulty adding source terms via UDF (user defined function). Please, if you can give me some leads on the subject. Thanks in advance.

Sir Please provide these ppt's!?

Hello @Sofen , I am trying to do as suggested in your tutorial. However, when I tried to do initialization , fluent crashes. It gives 9999 accept mpt error Any idea why?

This resource is paid and available online only on ANSYS training for 2200$ subscription 🥴🥴🥴

Sir , can a UDF be programmed in python.

can i have a translation to this video please?

Where is part 2