February 16, 2021 at 5:24 amHusseinKSubscriberHello all,nI have a design of 3D room, 3 air inlets in the ceiling, 1 air outlet also in the ceiling (suction outlet), and a door where I open it and close it (open = pressure outlet, closed = wall).nNow I have introduced air coming from the ceiling inlets at a certain velocity.nFor the open door results, air particles residence time is much much higher than the closed door case, although it should be the opposite (I believe) as opening the door should help in discharging air faster.nnWhat could possibly be wrong?.Thank you, stay safen
February 16, 2021 at 1:14 pmKarthik RAdministratorHello,nHow are you estimating your particle residence time? Are you using DPM? If so, what are your injections?nHow is your simulation convergence? Can you show a plot of the residuals and monitors here?nKarthikn
February 16, 2021 at 4:19 pmRobAnsys EmployeeAlso look at the flow field. Adding an extra boundary may have created a new flow feature that's responsible for the increased residence time. n
February 17, 2021 at 12:28 amHusseinKSubscriber
February 17, 2021 at 12:30 amHusseinKSubscriberDear Rob,nnDo you mean in the BC's? they are defined as inlets, outlets, walls and that's it.nnLet me check the flow field and see if there is something that slipped out of my hand.Thanks againn
February 17, 2021 at 4:05 pmRobAnsys EmployeeYou opened the door: that's the extra boundary in the sense it allows air into or out of (most likely both) of the domain. n
- You must be logged in to reply to this topic.
Boost Ansys Fluent Simulations with AWS
Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.
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.
- Suppress Fluent to open with GUI while performing in journal file
- Floating point exception in Fluent
- What are the differences between CFX and Fluent?
- Heat transfer coefficient
- Getting graph and tabular data from result in workbench mechanical
- Difference between K-epsilon and K-omega Turbulence Model
- The solver failed with a non-zero exit code of : 2
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error: Received signal SIGSEGV
© 2023 Copyright ANSYS, Inc. All rights reserved.