dissip2dord4

algorithm

  • calculates turbulent dissipation rate
  • using 4th order scheme for gradients
  • see for example Taylor (1935)

syntax

[tdiss]=dissip2dord4(UX,UY,st,nu) 

 

example for input

[tdiss]=dissip2dord4(x_velocity,y_velocity,0.00004) 

 

input arguments

Name description
UX square matrix;
x_component of velocity
UY square matrix;
y_component of velocity
step width of the grid,distance defining the gradients
nu cinematic viscosity; optional input argument
if there is not an input for nu the program takes 1.57 e-05 (air) by default

output arguments

Name description
tdiss dissipation rate of turbulent kinetic energy

matlab tools required

  • gradient

toolbox tools required

corresponding 3d tools

Letzte Änderung: 24.02.2015 - Ansprechpartner: Dominique Thevenin