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

Fluent Simulation of gas mixture in the pipe

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 25, 2016, 01:35
Smile Fluent Simulation of gas mixture in the pipe
  #1
New Member
 
Rauf
Join Date: Jun 2013
Location: Indonesia
Posts: 4
Rep Power: 13
free.man is on a distinguished road
hello everyone.
i am doing some simulation of fluid flow in the 90 degree bending pipe. i want to know relation of velocity inlet variation, compressibility, and pressure drop for mixtures gas flow.

this is my setup:
1. fluid is natural gas (11 species of mixtures gas), modeled as incompressible-ideal-gas. i am considering to use ideal-gas model later. or any suggestion?.
2. velocity will be varied from 0.5 m/s until 180 m/s (velocity, mach number, and Reynolds number attached below).
3. pressure of the system is 0.3 atm(gauge).and environment pressure 1 atm.
4. i use k-w SST turbulent model (my reason is because flow will be always in entrance region, so k-e is not applicable) CMIIW.

my questions are:
1. the fluid is modeled as incompressible-ideal-gas. i am considering to use ideal-gas model later. or any suggestion sir?.
2. based on march number, it will be incompressible and compressible flow can i use pressure based ??. or switch to density based when mach > 0.3 ?
3. where to input the pressure of the system ?. i tried to input inlet pressure gauge 0.3 atm but the result is similar with inlet pressure gauge 0 atm.
4. in some compressible flow simulation tutorial, i saw that they using inviscid model (because of very high Reynolds number). for my model, which one will be better, stay using turbulent model or switch to inviscid ?.

5. i open any suggestion .

thank you for advice.

regards,
free.man
Attached Images
File Type: png data.PNG (11.5 KB, 11 views)
free.man is offline   Reply With Quote

Old   November 26, 2016, 01:59
Unhappy
  #2
New Member
 
Rauf
Join Date: Jun 2013
Location: Indonesia
Posts: 4
Rep Power: 13
free.man is on a distinguished road
any suggestion??
free.man is offline   Reply With Quote

Reply

Tags
mach number, mixture of gases, pipe flow, pressure based solver

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
Setting the height of the stream in the free channel kevinmccartin CFX 12 October 13, 2022 22:43
mass flow in is not equal to mass flow out saii CFX 12 March 19, 2018 06:21
LSR (Land speed record) car simulation on FLUENT Maxime31850 FLUENT 2 May 1, 2013 12:15
Gas pressure question Dan Moskal Main CFD Forum 0 October 24, 2002 23:02
gas expansion in pipe crack propagation Marco Evangelos Biancolini Main CFD Forum 2 October 4, 2000 11:41


All times are GMT -4. The time now is 02:02.