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

Varying pressure for increase in channel width in a microchannel

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

LinkBack Thread Tools Search this Thread Display Modes
Old   June 23, 2022, 04:17
Default Varying pressure for increase in channel width in a microchannel
New Member
Join Date: Sep 2015
Posts: 23
Rep Power: 10
Sripadaraja is on a distinguished road
I request help in understanding one of the flow behavior that I notice. I am attaching a document for your reference.

I am working on droplet microfluidics. Below are my simulation conditions.

Velocity of water (Red) = 0.002m/s (fixed throughout simulation)
Velocity of Oil (Blue) = 0.004m/s (fixed throughout simulation)

Situation 1: When I increase the width of the side channel (ONLY), liquid pressure also increases (at points marked).

Situation 2: When I increase the width of the main channel (ONLY), liquid pressure decreases (at points).

I am unable to relate the two phenomena using general flow behavior (Bernoulli's equation). I discussed this with some of my lab mates and I am unable to get a convincing answer. Kindly share your thoughts on this and educate me on my understanding.

Let me know if there is any information missing, that I can provide.
Attached Files
File Type: docx Queries.docx (188.5 KB, 0 views)
Sripadaraja is offline   Reply With Quote


microfluidic, multiphase flow, vof method

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
how to drive cyclic channel flow by a given pressure gradient djlliam OpenFOAM Running, Solving & CFD 1 June 7, 2022 05:52
Pressure fields in FOAM, p field, total pressure, etc. Tobi OpenFOAM Post-Processing 9 March 25, 2022 01:33
Setting up the pressure variation due to tornado in a duct(UDF)+animation guillaume1990 FLUENT 0 March 3, 2014 11:59
Does star cd takes reference pressure? monica Siemens 1 April 19, 2007 11:26
Hydrostatic pressure in 2-phase flow modeling (long) DS & HB Main CFD Forum 0 January 8, 2000 15:00

All times are GMT -4. The time now is 15:18.