It is possible to use a velocity profile at the inlet BC plane in TFM?

MFiX
#1

Hi,

I am using MFiX Batch solver (versions 19.3.1 / 2016.1 / 2013.2) with cylindrical coordinates for modelling vertical transport with 3D TFM. I am using Ubuntu 18.04.5 with GNU 7.5.0.

Would it be possible to specify a velocity profile (such as fully developed turbulent or fully developed laminar flow profile) at the inlet BC plane as against a uniform velocity? One possibility could be a means to specify the gas velocities (BC_V_g) for the cells at different radial distances? The aim is to reduce the entrance length for fully developed gas-solids flow and hence to model a shorter pipe.

Kindly let me know.

Thank you.

Prabu

#2

The velocity profile you are asking about is not directly supported, but it is possible you could modify the boundary condition code in the MFiX solver to support this.

#3

See also Initial condition using concentration gradient - #2 by cgw