rmt_create_adv creates an RMT3DMS adv object.
rmt_create_adv( mixelm = -1, percel = 1, mxpart = 1e+06, nadvfd = 0, itrack = 1, wd = 0.5, dceps = 1e-05, nplane = 0, npl = 0, nph = 32, npmin = 2, npmax = 2 * nph, interp = 1, nlsink = nplane, npsink = nph, dchmoc = 0.001 )
| mixelm | integer code for the advection solution option (see details). Defaults to -1. |
|---|---|
| percel | Courant number. Defaults to 1 |
| mxpart | maximum number of moving particles. Only used when mixelm = 1 or 3. Defaults to 1e6 |
| nadvfd | weighting scheme for implicit finite difference (mixelm = 0). 0 or 1 (default) indicates upstream weighting, 2 is central-in-space |
| itrack | particle-tracking method: 1 (default) = first-order Euler, 2 = fourth-order Runge-Kutta, 3 = hybrid. Only used when mixelm = 1, 2 or 3. |
| wd | concentration weighting factor used for operator splitting in particle tracking-based methods. Defaults to 0.5. Only used when mixelm = 1, 2 or 3. |
| dceps | Relative Cell Concentration Gradient below which advective transport is negligble. Defaults to 1e-5. Only used when mixelm = 1 or 3. |
| nplane | specifies type of initial placement of particles: random (0; default) or fixed pattern (> 0). Only used when mixelm = 1 or 3. |
| npl | number of initial particles per cell at cells where Relative Cell Concentration Gradient is <= dceps. Defaults to 0. Only used when mixelm = 1 or 3. |
| nph | number of initial particles per cell at cells where Relative Cell Concentration Gradient is > dceps. Defaults to 32. Only used when mixelm = 1 or 3. |
| npmin | minimum number of particles allowed per cell. Defaults to 2. Only used when mixelm = 1 or 3. |
| npmax | maximum number of particles allowed per cell. Defaults to |
| interp | concentration interpolation method for MMOC scheme. Only a value of 1 is allowed (linear interpolation). Only used when mixelm = 2 or 3. |
| nlsink | specifies type of initial placement of particles to approximate sink cells in MMOC: random (0) or fixed pattern (> 0). Defaults to |
| npsink | number of particles used to approximate sink cells in MMOC. Defaults to |
| dchmoc | critical Relative Concentration Gradient for controlling selective use of MOC or MMOC in HMOC scheme. Defaults to 0.001. Only used when mixelm = 3. |
an object of class adv
mixelm = 0: standard finite-difference method with upstream (nadvfd = 0 or 1) or central-in-space (nadvfd = 2) weighting. mixelm = 1: forward-tracking method of characteristics (MOC) mixelm = 2: backward-tracking modified method of characteristics (MMOC) mixelm = 3: hybrid method of characteristics (HMOC) with MOC or MMOC automatically and dynamically selected mixelm = -1: third-order TVD scheme (ULTIMATE)
rmt_create_adv(percel = 0.75)#> $mixelm #> [1] -1 #> #> $percel #> [1] 0.75 #> #> $mxpart #> [1] 1e+06 #> #> $nadvfd #> [1] 0 #> #> attr(,"class") #> [1] "adv" "rmt_package"rmt_create_adv(mixelm = 3, nph = 16)#> $mixelm #> [1] 3 #> #> $percel #> [1] 1 #> #> $mxpart #> [1] 1e+06 #> #> $nadvfd #> [1] 0 #> #> $itrack #> [1] 1 #> #> $wd #> [1] 0.5 #> #> $dceps #> [1] 1e-05 #> #> $nplane #> [1] 0 #> #> $npl #> [1] 0 #> #> $nph #> [1] 16 #> #> $npmin #> [1] 2 #> #> $npmax #> [1] 32 #> #> $interp #> [1] 1 #> #> $nlsink #> [1] 0 #> #> $npsink #> [1] 16 #> #> $dchmoc #> [1] 0.001 #> #> attr(,"class") #> [1] "adv" "rmt_package"