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Create an udf for evaluate the adaptive time step

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Old   June 28, 2019, 12:03
Default Create an udf for evaluate the adaptive time step
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Francesco Labianca
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Goodmorning, i have to write an udf for evaluate the rime step size, during my simulation, with the evaluation of a function that compute the maximum of the division between velocity and cell dimension (dx), during every step. I have to use this function because i can compute with this program the value of the time step size with a condition on cfl (i define a number for cfl limit). I wrote the function but Fluent give me some errors. Someone could help me?
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Old   June 28, 2019, 12:06
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Francesco Labianca
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https://ibb.co/PDFqyjq
https://ibb.co/YjzHnyd
Image of code and error
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Old   July 1, 2019, 01:11
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Alexander
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AlexanderZ will become famous soon enoughAlexanderZ will become famous soon enough
put here code and error (with detailed explanations of steps which lead to error)

dont use pictures

best regards
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