CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

CFD simulation of gas cicrcuit breaker in fluent with dynamic meshing.

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   December 11, 2014, 00:05
Default CFD simulation of gas cicrcuit breaker in fluent with dynamic meshing.
New Member
Join Date: Nov 2014
Posts: 1
Rep Power: 0
Mahesh7238 is on a distinguished road
Hello dear freinds.

I am working on 2D axisymetric model of gas circuit breaker and i am totally new fluent user.

I am facing some problems while simulation.

As a part of working of circuit breaker,contacts of gas circuit breaker moves when fault conditins occurs.Hence some components in model is moving and some components are my simulation involves dynamic meshing.

All moving and stationary componts are solid and remaining volume of a circuit breaker is occupied by gas and there are some holes in moving and stationary solid components.

And from dynamic meshing point of view there is mesh interface between
i) stationary components and moving components ii) Moving components and adjecent fluid cell zones.
Hence where there is mesh interface there i have defined boundary condition as interface.
initially all interfaces are completely overpping.

so problem which i facing is
1) when moving components moves while using preview mesh motion option at some interfaces situation is such that one interface zone is moving (rigid body motion) and another intergace zone remains stationary and components moves correctly for given no of time steps.

But if i move both the interface zones (rigid boby motion) after certain no of time steps following error occurs : Negative cell volume exists.Hence i cannot move both interface zones.

Because of this i cannot move both interface zones.and if i moves only one interface zone what happening during simulation is that as component moves the contact between intrfaces starts reducing as simulation proceeds as one interface zone is miving and one is stationary.

Because of this there will not be proper heat and mass transfer from one cell zone to another,which affects my simulation results.

please any one suggest me some solution for this.Its very urgent.

Thanks in advance.
Mahesh7238 is offline   Reply With Quote

Old   April 5, 2021, 00:21
Default Paper?
New Member
h1773's Avatar
Join Date: Feb 2021
Posts: 8
Rep Power: 6
h1773 is on a distinguished road
Which Paper are you following?
h1773 is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
CFD Salary CFD Main CFD Forum 17 January 3, 2017 17:09
CFD Design...The CFD Future John C. Chien Main CFD Forum 20 November 19, 2015 23:40
facing problem in dynamic meshing motion preview in fluent hitesh0401 Fluent UDF and Scheme Programming 6 May 8, 2014 15:59
[Help] H-rotor CFD simulation with Fluent UDF ntsphong2 FLUENT 0 January 9, 2014 02:08
Reactor simulation using CFD takes to the Internet Mark Brennan Main CFD Forum 0 April 16, 1999 05:57

All times are GMT -4. The time now is 04:35.