Result difference between RAS(kwSST) and Laminar in multiphaseInterFoam -- CFD Online Discussion Forums

June 7, 2019, 05:24

Result difference between RAS(kwSST) and Laminar in multiphaseInterFoam

dokeun

Member

Dokeun, Hwang

Join Date: Apr 2010

Location: Korea, Republic of

Posts: 98

Rep Power: 16

Dear OFoamers,

I have tested water impinging simulation with multiphaseInterFoam.

The spray angle is compared with experiment results. I expected that the spray angles are not so different among laminar and RAS models.
But the laminar was the most coincident with the exp. and kwSST showed distinguishably narrow angle. As you can see from the pic I attached, the turbulence strength has not an effect on spray angle.

Mixing length, k, w were calculated referring Fluent and conventional guide for pipe flow.

I upload one of the kwSST case. The mesh was generated by gmsh(ver2 ascii)

would please some explain the reason that spray angles are so different?

Attached Images

image01.jpg (56.5 KB, 18 views)

Attached Files

test.zip (13.6 KB, 4 views)

Last edited by dokeun; June 8, 2019 at 09:49.

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