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turbinf

v17	v18
1	1	= Setup for turbulent inflow =
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3		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 [#lund1988 Lund et al. (1998)], modified by [kataoka2002 Kataoka and Mizuno (2002)]. The method is switched on by setting the initial parameter [../../inipar#turbulent_inflow turbulent_inflow] = ''.TRUE.''.
	3	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 [#lund1988 Lund et al. (1998)], modified by [#kataoka2002 Kataoka and Mizuno (2002)]. The method is switched on by setting the initial parameter [../../inipar#turbulent_inflow turbulent_inflow] = ''.TRUE.''.
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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.