Triangular_Channels_ND
The function Triangular_Channels_ND(Re: f,j_H) returns tht friction factor (f), and Colburn j factor (j_H) for a matrix comprised of triangular channels.
Inputs:
Re - reynolds number defined by the hydraulic diameter of a single triangular passage
Ouputs:
f - friction factor [-]
j_H - Colburn j factor defined as follows:
where,
Example:
Re=2000 [-]
Call triangular_channels_nd(Re: f,j_H)
{Solution:
f=0.01037
j_H=0.002923
}
Notes: This function is called by Triangular_Channels to determine the friction factor and Colburn j factor. The data is based on experimental result found in Kays and London (1984)It is assumed that construction material is thin, and the porosity can be approximated as 1.