dissip3dord2

algorithm

  • calculates turbulent dissipation rate of a 3D velocity field
  • using 2nd order scheme for gradients
  • see for example Taylor (1935)

syntax

[tdiss]=dissip3dord2(UX,UY,UZ,st,nu)

 

example for input

[tdiss]=dissip3dord2(XVEL,YVEL,ZVEL,0.00004)

 

input arguments

UX

square matrix;
x_component of velocity

UY

square matrix;
y_component of velocity

UZ

square matrix;
z_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

tdiss

dissipation rate of turbulent kinetic energy

matlab tools required

  • gradient

toolbox tools required

 

corresponding 2d tools

Letzte Änderung: 24.02.2015 - Ansprechpartner: Dominique Thevenin