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

Defining new material for Combustion Analysis

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 7, 2017, 00:50
Question Defining new material for Combustion Analysis
  #1
New Member
 
Ahmad Ijaz
Join Date: Jun 2017
Location: Islamabad, Pakistan
Posts: 6
Rep Power: 2
ahmadijaz is on a distinguished road
Hi

OBJECTIVE
I am trying to simulate combustion of Unsymmetrical dimethylhydrazine (UDMH -C2H8N2) and Nitrogen Tetraoxide (NTO-N2O4). UDMH is in liquid form and NTO in gaseous form. Combustion reaction is;

C2H8N2+N2O4=3N2+4H2O+2CO2

I am using DPM for UDMH evaporation and non-premixed combustion model for complete analysis. I have manually added UDMH polynomial coefficient in thermo.db file and liquid UDMH properties in propdb.scm.

PROBLEM
I want to ask that, is it necessary for the compound to be present in vapor form also in propdb.scm file? Because with every single tutorial I came across involving DPM like n-pentane combustion analysis (present in the fluent tutorial guide), n-pentane (C5H12) in PDF mixture showing the properties of n-pentane-vapor present in propdb.scm and in droplet mixture n-pentane is showing properties of n-pentane-liquid also present in propdb.scm.


Please help me in this i ll be very grateful.
ahmadijaz is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Material change during phase transformation (FePO4 > LiFePO4) concentration distribut kimsw0103 CFX 0 January 15, 2016 23:05
defining a new material i.e Glass umair64 CFX 1 September 1, 2015 18:34
Compression stoke is giving higher pressure than calculated nickjuana CFX 62 May 19, 2015 13:32
Defining solid material properties query siw CFX 1 April 21, 2010 16:49
defining Material mactech001 CFX 1 April 21, 2010 15:32


All times are GMT -4. The time now is 16:17.