Changes between Version 13 and Version 14 of doc/app/examples/turbinf

Timestamp:

Jun 29, 2017 3:06:45 PM (8 years ago)

Author:

Giersch

Comment:

--

doc/app/examples/turbinf

@@ -5 +5 @@
 The turbulent signal A'(y,z) to be imposed at the left inflow boundary is taken from the same simulation at a fixed distance x,,r,, from the inflow (given by parameter [../../inipar#recycling_width recycling_width]): A'(y,z) = A(x,,r,,,y,z) - '''A(x,,r,,,z)''', where '''A(x,,r,,,z)''' is the line average along y. The turbulent quantity A'(y,z) is then added to a mean inflow profile a(z) which is the horizontal (and temporal) average as calculated from a precursor run. This is done after each timestep.
 
-In order to avoid a continous growth of the turbulent layer with time, the height up to which turbulence is recycled is limited by parameter [../../inipar#inflow_damping_height inflow_damping_height]. By default, this height is calculated and taken from the precursor run.
+In order to avoid a continous growth of the turbulent layer with time, the height up to which turbulence is recycled is limited by parameter [../../inipar#inflow_damping_height inflow_damping_height]. By default, this height is equal to the the height of the boundary layer z_i calculated by the precursor run. In the case of a strictly neutral flow you have to set the parameter [../../inipar#inflow_damping_height inflow_damping_height] because the value of z_i calculated by the precursor run is zero.   
 
 '''So far, a turbulent inflow is realized from the left (west) side only (05/04/16)! '''