CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT > Fluent Multiphase

Non-dimensional numbers in multiphase flows

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

LinkBack Thread Tools Search this Thread Display Modes
Old   August 29, 2022, 08:40
Default Non-dimensional numbers in multiphase flows
New Member
Join Date: Mar 2020
Location: IIT, Delhi, India
Posts: 8
Rep Power: 4
Rohitsingh is on a distinguished road
Send a message via Skype™ to Rohitsingh
Two phases (air and water) are flowing simultaneously through a rectangular channel as shown in Figure. If the velocity of air is increased by 2, 4 and 8 times that of the liquid inlet velocity in three different cases. The dynamics of the interface will be different for these three different velocities of the gas phase due to the momentum transfer from the gas phase to the liquid phase. But if we calculate the ratios of inertial forces of the gas phase to that of the liquid phase or the different non-dimensional numbers for both gas and liquid phases e.g., weber number. We are getting an understanding that the liquid phase inertia dominates and also the magnitude of numbers shows that the effect of gas phase inertia on the interface dynamics is secondary, due to the high density and viscosity of the liquid phase. But visually I am seeing the significant contribution of gas phase inertia on the interface dynamics.

Therefore, my questions are:
1. How to explain the contribution of gas phase inertia through non-
dimensional numbers for the above problem?
2. If not non-dimensional numbers, then what could be the best way to quantify the effect of gas phase inertia on the interface dynamics?
Rohitsingh is offline   Reply With Quote


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
Compressible flows with larger Courant numbers Tobi OpenFOAM Running, Solving & CFD 5 February 26, 2021 16:20
Calculating average velocity for multiphase flows using CFD-Post amin.z FLUENT 1 July 15, 2015 08:34
Multiphase flows Theo CFD-Wiki 1 March 28, 2007 03:25
cooperation on multiphase flows david Main CFD Forum 0 February 7, 2007 20:09
Could anybody help me see this error and give help liugx212 OpenFOAM Running, Solving & CFD 3 January 4, 2006 19:07

All times are GMT -4. The time now is 14:35.