Calculation of vertical waterflow caused by air bubbles
Calculation of vertical waterflow caused by air bubbles
(OP)
Hi guys.
Im working on a project where we need to estimate vertical flow in a wide vertical tube caused by a stream of air bubbles released at the bottom. I have Solidworks Flow, but this is as far as i understand not suitable for this kind of calculation.
Do you have any tips to the easiest ways of calculating this? My goal would be a way to calculate vertical water current speed (distribution) based on:
Hopefully I could get out some sort of relation which could later be processed in Excel, so that I dont need to run a CFD 100 times.
Thanks!
Im working on a project where we need to estimate vertical flow in a wide vertical tube caused by a stream of air bubbles released at the bottom. I have Solidworks Flow, but this is as far as i understand not suitable for this kind of calculation.
Do you have any tips to the easiest ways of calculating this? My goal would be a way to calculate vertical water current speed (distribution) based on:
- Diameter of tube
- Height of tube
- Air bubble hole pattern (number and placement)
- Air hole size
- Air pressure
Hopefully I could get out some sort of relation which could later be processed in Excel, so that I dont need to run a CFD 100 times.
Thanks!
RE: Calculation of vertical waterflow caused by air bubbles
RE: Calculation of vertical waterflow caused by air bubbles
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RE: Calculation of vertical waterflow caused by air bubbles
To simulate this either you need a vast number of bubbles and a time-phase solution or a way to have a phase change that alters the density of the liquid in the bubble column.
Interesting video: https://www.youtube.com/watch?v=TOVZ4oklBFw In the video it is used to recirculate as a demo, but with enough density change it can lift water to a height equal to the depth. I think these are also used as under-water 'vacuum' cleaners.
RE: Calculation of vertical waterflow caused by air bubbles
In your case, I believe that the multiphase flow analysis is a big part of your CFD fluid simulation.
I highly recommend setting up a controlled experiment to better have a better physical understanding and as test cases for numerical and theoretical work.
In addition, to recreate some important simulation models and engineering modeling techniques, it is critical for you to measure the key parameters involved in the two-phase bubbly flow such as bubble shape, bubble motion, flow regime which play a considerable vital role in many engineering simulation applications.
Daniel Tan
Your Trusted Engineering Simulation Expert
https://broadtechengineering.com/cfd-simulation/