November 4, 2020 at 2:20 amknuckshukSubscriber
I am trying to simulate retort heating for sterilization. The heating will be in all direction of the walls.
So I have a real factory data temperature of the retort and would like to set a BC out of it. In exact, I want to set my boundary condition to follow the retort temperature per minute. The data I have is something like this,
t = 0min, T = 10
t=1min, T = 20.. etc
So what I did from watching tutorial is to write a UDF attached below. But the result shows that the outer walls do not change temperature. I see that the simulation result shows heating form the middle instead of the outer walls. One problem that I found is that I noticed that when I attached the file to the BC temperature tab, it does not take into account the time, only the temperature. May I know if i can fix the UDF? Or am I not able to do so with this kind of UDF?
The real data is not linear, the attached file is just an example. It involved heating, sterilizing and cooling so the best fit equation is not accurate to be modelled using an expression.
Please help!November 4, 2020 at 5:38 pmSurya DebAnsys EmployeeHello, nAs ANSYS Employees, we cannot download an attachment. Can you please take a screenshot of your UDF and embed it in the post?nA DEFINE_PROFILE UDF should be able to handle the variation of temperature with time.nAlso it is not clear when you say it does not take into account the time. nIf the problem is transient and you are using proper flow time macros to vary your temperature, then Fluent should be able to interpolate and apply the variation.nRegards,nSuryanNovember 6, 2020 at 2:31 pmknuckshukSubscriberNovember 6, 2020 at 3:20 pmDrAmineAnsys EmployeeThat is transient table profile and not an UDF.nNovember 7, 2020 at 1:12 amknuckshukSubscriberOh, is it possible to use this table then? I have 158 data pointsnViewing 4 reply threads
Ansys Innovation Space
- You must be logged in to reply to this topic.
Simulation World 2022
Check out more than 70 different sessions now available on demand. Get inspired as you hear from visionary companies, leading researchers and educators from around the globe on a variety of topics from life-saving improvements in healthcare, to bold new realities of space travel. Take a leap of certainty and check out a session today here.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.Trending discussions
- Suppress Fluent to open with GUI while performing in journal file
- Heat transfer coefficient
- What are the differences between CFX and Fluent?
- Floating point exception in Fluent
- The solver failed with a non-zero exit code of : 2
- Getting graph and tabular data from result in workbench mechanical
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error in cfd post
Top Rated Tags
© 2022 Copyright ANSYS, Inc. All rights reserved.Ansys does not support the usage of unauthorized Ansys software. Please visit www.ansys.com to obtain an official distribution.