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

c& nozzle flows with heat transfer process

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 20, 2018, 02:35
Default c& nozzle flows with heat transfer process
  #1
Member
 
Sai Krishna
Join Date: May 2018
Posts: 37
Rep Power: 8
Sai Krishna is on a distinguished road
i want to simulate an experiment in fluent in which hot air flows through nozzle and outer wall temperature is measured. nozzle is made up of steel. i made nozzle geometry(axi symmetric) in icem cfd providing thickness for the walls. the problem is when i did simulation in fluent, i am not able to get the temperature gradient in the solid walls and whole body its showing at the same temperature of the gas (which i gave as input.)
my doubts are:
1.i should get a boundary layer on inner side of the walls, which i am not
getting.
2.temperature gradient in steel is not occurring.(steel thickness is 5 mm)
3.as the experiment is conducted not in controlled environment, i provided a
domain with pressure far field condition with pressure as 1 bar and mach
number as 0.001(since i assumed the air is in almost stand still condition).
but this provided very vague results in which the body temperature is
raising more than the entry fluid temperature.

my boundary conditions are
4 bar pressure, 4 kg/sec mass flow rate, 1650K temperature - inlet
gases are exit to atmosphere

models - k-epsilon, realizable, enhanced wall treatment , thermal effects.

i did 4 revisions for this, none of them gave the satisfied results.

help in this will be greatly appreciated

thank you.
Sai Krishna is offline   Reply With Quote

Reply

Tags
fluent, heat transfer boundary, nozzle simulation

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
modelling heat transfer inside a jet nozzle Taruk Main CFD Forum 1 June 2, 2017 10:19
Basic Nozzle-Expander Design karmavatar CFX 20 March 20, 2016 08:44
Question about heat transfer coefficient setting for CFX Anna Tian CFX 1 June 16, 2013 06:28
Water subcooled boiling Attesz CFX 7 January 5, 2013 03:32
How can I increase Heat Transfer at Domain Interf? B.Simon CFX 3 October 28, 2008 18:53


All times are GMT -4. The time now is 17:19.