CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

Boundary condition definition problem for detonation

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 26, 2022, 06:46
Default Boundary condition definition problem for detonation
  #1
New Member
 
Paul
Join Date: Nov 2022
Posts: 1
Rep Power: 0
silentum is on a distinguished road
Hello Users,

I am doing first steps with CFD and currently working on a project with my profesor regarding detonation in detonation pipe.

The problem looks as shown below. There is no inlet nor outlet and simulation is transient.
My question is how to define such initial conditions, that the first part of geometry has pressure of 8 bar and the remaining two parts have 1 bar and how to define that the whole boundary consist of stochiometric mixture of hydrogen and air.

geo.png

The second question is how to import combustion mechanism for detonation of hydrogen-air mixture? My profesor told me to use this. Below only part of the mechanism is shown.

reaction.png
source: https://www.universityofgalway.ie/co...nismdownloads/
Hydrogen (2004)

Should I use only reaction mechanism or thermodynamics and transport too?
silentum is offline   Reply With Quote

Reply

Tags
boundary condition, detonation, reaction mechanisms

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
Problem of boundary condition setting for natural convection in a water tank haiteng FLUENT 2 June 25, 2020 04:04
Centrifugal fan j0hnny CFX 13 October 1, 2019 13:55
CFD analaysis of Pelton turbine amodpanthee CFX 31 April 19, 2018 18:02
Pressure Boundary Condition Problem rbjet CFX 3 July 15, 2013 21:45
Low Mixing time Problem Mavier CFX 5 April 29, 2013 00:00


All times are GMT -4. The time now is 23:33.