Changes between Version 36 and Version 37 of doc/app/particle_parameters
- Timestamp:
- Sep 13, 2010 12:55:08 PM (14 years ago)
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doc/app/particle_parameters
v36 v37 14 14 }}} 15 15 {{{#!td 16 17 16 Temporal interval at which particles are to be released from a particle source (in s).\\ 18 17 By default particles are released only at the beginning of a simulation (t_init=0). The time of the first release (t_init) can be changed with package parameter [#particle_advection_start particle_advection_start]. The time of the last release can be set with the package parameter [#end_time_prel end_time_prel]. If '''dt_prel''' has been set, additional releases will be at ''t = t_init+'''dt_prel''', t_init+2*'''dt_prel''', t_init+3*'''dt_prel''', etc..'' Actual release times may slightly deviate from thesel values (see e.g. [../d3par#dt_dopr dt_dopr]).\\\\ … … 28 27 The output of particles for visualization with the graphic software '''dvrp''' is steered by the package parameter [../dvrpar#dt_dvrp dt_dvrp]. For visualization purposes particles can be given a diameter using the parameters [../dvrpar#dvrp_psize dvrp_psize] and [../dvrpar#particle_dvrpsize particle_dvrpsize] (this diameter only affects the visualization). All particles have the same size. Alternatively, particles can be given an individual size and a color by modifying the user-interface ''(subroutine user_init_particles)''. Particles can pull a ''tail'' behind themselves to improve their visualization. This is steered via the parameter [#use_particle_tails use_particle_tails].\\\\ 29 28 '''So far, the particle transport realized in PALM does only work duly in case of a constant vertical grid spacing! ''' 30 31 29 }}} 32 30 |---------------- … … 41 39 }}} 42 40 {{{#!td 43 44 41 Bottom boundary condition for particle transport. \\ 45 42 By default, particles are reflected at the bottom boundary. Alternatively, a particle absorption can set by '''bc_par_b''' = '' 'absorb' ''. 46 47 43 }}} 48 44 |---------------- 49 45 {{{#!td style="vertical-align:top" 50 [=#bc_par_lr '''bc_par_ b''']46 [=#bc_par_lr '''bc_par_lr'''] 51 47 }}} 52 48 {{{#!td style="vertical-align:top" … … 60 56 By default, cyclic boundary conditions are used along x. Alternatively, reflection ('''bc_par_lr''' = '' 'reflect' '') or absorption ('''bc_par_lr''' = '' 'absorb' '') can be set. \\ 61 57 This lateral boundary conditions should correspond to the lateral boundary condition used for the flow (see [../inipar#bc_lr bc_lr]). 58 }}} 59 |---------------- 60 {{{#!td style="vertical-align:top" 61 [=#bc_par_ns '''bc_par_ns'''] 62 }}} 63 {{{#!td style="vertical-align:top" 64 C*15 65 }}} 66 {{{#!td style="vertical-align:top" 67 cyclic 68 }}} 69 {{{#!td 70 Lateral boundary condition (y-direction) for particle transport.\\ 71 By default, cyclic boundary conditions are used along y. Alternatively, reflection ('''bc_par_ns''' = '' 'reflect' '') or absorption (bc_par_ns = '' 'absorb' '') can be set. \\ 72 This lateral boundary conditions should correspond to the lateral boundary condition used for the flow (see [../inipar#bc_ns bc_ns]). 73 }}} 74 |---------------- 75 {{{#!td style="vertical-align:top" 76 [=#bc_par_t '''bc_par_t'''] 77 }}} 78 {{{#!td style="vertical-align:top" 79 C*15 80 }}} 81 {{{#!td style="vertical-align:top" 82 cyclic 83 }}} 84 {{{#!td 85 Top boundary condition for particle transport.\\ 86 By default, particles are absorbed at the top boundary. Alternatively, a reflection condition can be set by '''bc_par_t''' = '' 'reflect' ''. 62 87 }}} 63 88 Table row with nesting:\\