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

Velocity of fluids inside pipes

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 19, 2023, 20:00
Default Velocity of fluids inside pipes
  #1
New Member
 
Join Date: Apr 2023
Posts: 12
Rep Power: 3
ChemEng_1992 is on a distinguished road
Hello, dear engineers

In the Reynolds number formula, which in the general state of U represents the velocity characteristic, under what conditions can the velocity inlet, mean velocity, characteristic velocity, and free stream velocity in a pipe in turbulent flow for incompressible fluid be assumed to be the same?
In spiral, helical, and serpentine channels (without or with tube insert), in turbulent flow and velocity inlet equal to 2 m/s, is the hypothesis of equality of all types of velocities mentioned earlier acceptable?
Some Y+ online calculator sites have stated mean velocity or free stream velocity for the velocity parameter.
I don't know for sure which velocity is actually considered in the Reynolds number formula and Y+ calculation.

Thank you in advance for your guidance.
ChemEng_1992 is offline   Reply With Quote

Reply

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
Import .csv - velocity profile - error eSKa CFX 9 April 3, 2021 13:38
Multiphase flow - incorrect velocity on inlet Mike_Tom CFX 6 September 29, 2016 01:27
Generating Velocity Profile inside domain. Hisham OpenFOAM 0 June 7, 2011 07:25
model of pipes inside pipe carmen FLUENT 0 January 22, 2009 09:27
where to find velocity field for square pipes??? enrico Main CFD Forum 2 February 4, 2005 11:32


All times are GMT -4. The time now is 04:05.