Reply To: Surface Reaction: UDF: Ansys Fluent Error – reg

[Rob]

What triggers the UDM call? If I set a trigger as IF time>1500.s and only run to 800. s the UDF may be correctly hooked but won't show anything as the IF statement isn't satisfied. Assuming you have checked the triggers, start replacing some of the calculated values with constants: you need to find if the UDF result is "nothing happens", if it's not triggered or if you've made an error in the maths. Staff will not debug code, and given the quantity of code & images giving it a quick once over isn't practical.