Simulation of U-Loop Reactor

cfd_newbiee · November 6, 2022, 10:54

Hey fellow CFDians,

currently, I need to do a simulation of a U-Loop reactor at university but I came across some problems.

As of now, I already was able to generate a useful mesh out of my 3d SolidWorks part. I have also defined the various phases (phase1 water, phase2 air) and the inlet, outlet and walls.
Geometry:

Mesh:

Settings:

It doesn't matter how I alter the velocity at the inlet, I am just not able to create a proper circulation flow that should look something like this:

This leads me to the following questions:
- How can a (clockwise) circulating flow be realized?
- How can the water filling level be defined?
- How can the aeration rate of the reactor be defined?
- How can a static mixer be integrated into the system?

I hope there is someone able to help me, I would be very thankful.

Gert-Jan · November 15, 2022, 17:30

What is driving your flow? Air bubbles?
Where is the inlet for air? Where is the oulet?
Do you have gravity on?

November 6, 2022, 10:54	Simulation of U-Loop Reactor	#1
cfd_newbiee New Member Join Date: Nov 2022 Posts: 1 Rep Power: 0	Hey fellow CFDians, currently, I need to do a simulation of a U-Loop reactor at university but I came across some problems. As of now, I already was able to generate a useful mesh out of my 3d SolidWorks part. I have also defined the various phases (phase1 water, phase2 air) and the inlet, outlet and walls. Geometry: Mesh: Settings: It doesn't matter how I alter the velocity at the inlet, I am just not able to create a proper circulation flow that should look something like this: This leads me to the following questions: - How can a (clockwise) circulating flow be realized? - How can the water filling level be defined? - How can the aeration rate of the reactor be defined? - How can a static mixer be integrated into the system? I hope there is someone able to help me, I would be very thankful.

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November 15, 2022, 17:30		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,827 Rep Power: 27	What is driving your flow? Air bubbles? Where is the inlet for air? Where is the oulet? Do you have gravity on?