Simulation of granular flow in screw conveyor

Zahoor · November 23, 2015, 12:07

hi everyone,

i am trying to simulate the granular flow in a screw conveyor. i have made the geometry using ansys design modeler and meshing. fluid domain is extracted and an unstructured mesh is generated. now the problem i am facing is are

meshing quality is very low and i don't know how to improve it?

how to configure fluent?

how to rotate the blade/threads of conveyor?

Thanks...

fresty · November 24, 2015, 01:15

For mesh quality, you would need to apply mesh controls in model details, from what I can understand in your question.. About configuring Fluent, that is quite a broad question so have a look at some basic Fluent tutorials regarding MRF/ mesh motion & sliding etc..

Zahoor · November 24, 2015, 03:06

Thanks fresty.
i have tried mesh control methods but the aspect ratio is quite large. it goes up to 30-40. is this aspect ratio is valid?
in fluent i want to rotate the screw. is it possible to rotate screw body at desired RPM?

fresty · November 24, 2015, 04:06

Doesn't seem like.. pictures of your mesh?
Yes you could do that using both MRF and Mesh Motion model..

November 23, 2015, 12:07	Simulation of granular flow in screw conveyor	#1
Zahoor New Member Zahoor Hussain Join Date: Oct 2015 Posts: 22 Rep Power: 10	hi everyone, i am trying to simulate the granular flow in a screw conveyor. i have made the geometry using ansys design modeler and meshing. fluid domain is extracted and an unstructured mesh is generated. now the problem i am facing is are meshing quality is very low and i don't know how to improve it? how to configure fluent? how to rotate the blade/threads of conveyor? Thanks...

November 24, 2015, 01:15		#2
fresty Senior Member Join Date: Aug 2014 Location: UK Posts: 213 Rep Power: 12	For mesh quality, you would need to apply mesh controls in model details, from what I can understand in your question.. About configuring Fluent, that is quite a broad question so have a look at some basic Fluent tutorials regarding MRF/ mesh motion & sliding etc.. Zahoor likes this.

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November 24, 2015, 03:06		#3
Zahoor New Member Zahoor Hussain Join Date: Oct 2015 Posts: 22 Rep Power: 10	Thanks fresty. i have tried mesh control methods but the aspect ratio is quite large. it goes up to 30-40. is this aspect ratio is valid? in fluent i want to rotate the screw. is it possible to rotate screw body at desired RPM?

November 24, 2015, 04:06		#4
fresty Senior Member Join Date: Aug 2014 Location: UK Posts: 213 Rep Power: 12	Doesn't seem like.. pictures of your mesh? Yes you could do that using both MRF and Mesh Motion model..