| 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 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 [../ |
| 4 | | 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 [../ |
| | 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 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.}}}.\\\\ |
| | 4 | 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.\\\\ |
