Changes between Version 2 and Version 3 of doc/app/examples/turbinf

Timestamp:

Sep 16, 2010 12:26:16 PM (14 years ago)

Author:

witha

Comment:

--

doc/app/examples/turbinf

@@ -2 +2 @@
 
 Starting from version 3.5 PALM includes a so-called turbulence recycling method which allows a turbulent inflow with non-cyclic horizontal boundary conditions. The method follows the one described by Lund et al. (1998, J. Comp. Phys., '''140''', 233-258), modified by Kataoka and Mizuno (2002, Wind and Structures, '''5''', 379-392). The method is switched on by setting the initial parameter [../../inipar#turbulent_inflow turbulent_inflow] = {{{.TRUE.}}}.\\\\
-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(z)''', where '''A(z)''' is the horizontal average between the inflow boundary and the recycling plane. 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.\\\\
-So far (09/16/08), a turbulent signal is imposed to all prognostic variables except humidity (passive scalar) and salinity!\\\\
+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(z)''', where '''A(z)''' is the horizontal average between the inflow boundary and the recycling plane. 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.\\\\
+'''So far (09/16/08), a turbulent signal is imposed to all prognostic variables except humidity (passive scalar) and salinity! '''\\\\
 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 inflow_damping_height. By default, this height is calculated and taken from the precursor run.
 The following tries to give a short recipe about how to create a proper setup for using the turbulence recycling method: