Cell size Vs. particle size

eduardors · May 7, 2015, 16:23

Hi.

I'm working with an eulerian-eulerian model. One of my solid phases has a diameter of 0.004 cm. Should my cell have a size less than 0.004?

adrin · May 8, 2015, 20:32

You didn't specify the relevant details of the problem. With that in mind, the cell size should generally be quite a bit larger than the particle size. If the particle is in the order of the cell size (or larger) the problem becomes one of DNS. If you think about, how would you account for forces and momentum balance if a particle spans over one or more cells?

Adrin

May 7, 2015, 16:23	Cell size Vs. particle size	#1
eduardors New Member Eduardo da Rosa Join Date: Jul 2014 Location: Rio Grande, Brazil Posts: 8 Rep Power: 11	Hi. I'm working with an eulerian-eulerian model. One of my solid phases has a diameter of 0.004 cm. Should my cell have a size less than 0.004?

May 8, 2015, 20:32		#2
adrin Senior Member adrin Join Date: Mar 2009 Posts: 115 Rep Power: 17	You didn't specify the relevant details of the problem. With that in mind, the cell size should generally be quite a bit larger than the particle size. If the particle is in the order of the cell size (or larger) the problem becomes one of DNS. If you think about, how would you account for forces and momentum balance if a particle spans over one or more cells? Adrin chaitanyaarige likes this.

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