Nusselt_Sphere_RanzMarshall class
Contents
Description
This is a sub-class of the Nusselt class for the implementation of the Hanz & Marshall correlation for computing the Nusselt number for a flow past a sphere.
Notation:
: Reynolds number
: Prandtl number
References:
- W.E. Ranz and W.R. Marshall. Evaporation from Drops, Chem Eng Prog, 48:141-146, 1952. (proposal)
classdef Nusselt_Sphere_RanzMarshall < Nusselt
Constructor method
methods
function this = Nusselt_Sphere_RanzMarshall()
this = this@Nusselt(Nusselt.SPHERE_RANZ_MARSHALL);
end
end
Public methods: implementation of super-class declarations
methods
%------------------------------------------------------------------
function Nu = getValue(~,p,drv)
% Prandtl number
Pr = drv.fluid.Pr;
% Reynolds number
Re = drv.fluid.density * p.char_len * norm(drv.fluid_vel-p.veloc_trl) / drv.fluid.viscosity;
% Nusselts correlation
Nu = 2 + 0.6 * Re^(1/2) * Pr^(1/3);
end
end
end