sediment.in: Difference between revisions
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==Sediment model control switches== | ==Sediment model control switches== | ||
* Switch is used to control sediment model computation within nested and/or multiple connected grids, [1:Ngrids].<div class="box"> [[Lsediment]] == T</div> | * Switch is used to control sediment model computation within nested and/or multiple connected grids, [1:[[Ngrids]]] values are expected.<div class="box"> [[Lsediment]] == T</div> | ||
==General sediment bed model controls== | ==General sediment bed model controls== | ||
* Depositional bed layer thickness (m) criteria to create a new layer. If deposition exceeds this value, then a new layer is created, [1:Ngrids] values expected.<div class="box">[[newlayer_thick|NEWLAYER_THICK]] == 0.01d0</div> | * Depositional bed layer thickness (m) criteria to create a new layer. If deposition exceeds this value, then a new layer is created, [1:[[Ngrids]]] values are expected.<div class="box">[[newlayer_thick|NEWLAYER_THICK]] == 0.01d0</div> | ||
* Bed load transport rate coefficient, [1:Ngrids] values expected.<div class="box"> [[bedload_coeff|BEDLOAD_COEFF]] == 0.05d0</div> | * Bed load transport rate coefficient, [1:[[Ngrids]]] values are expected.<div class="box"> [[bedload_coeff|BEDLOAD_COEFF]] == 0.05d0</div> | ||
==Suspended Cohesive Sediment Parameters== | ==Suspended Cohesive Sediment Parameters== | ||
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* Critical stress for deposition (N/m2), not used.<div class="box"> [[tau_cd|MUD_TAU_CD]] == 0.01d0 0.01d0 0.01d0</div> | * Critical stress for deposition (N/m2), not used.<div class="box"> [[tau_cd|MUD_TAU_CD]] == 0.01d0 0.01d0 0.01d0</div> | ||
* Porosity (nondimensional): Vwater/(Vwater+Vsed). Its values range between 0 and 1.<div class="box"> [[poros|MUD_POROS]] == 0.0d0 0.0d0 0.0d0</div> | * Porosity (nondimensional): <span class="red">Vwater/(Vwater+Vsed)</span>. Its values range between '''0''' and '''1'''.<div class="box"> [[poros|MUD_POROS]] == 0.0d0 0.0d0 0.0d0</div> | ||
* Lateral, harmonic and biharmonic, constant, diffusion coefficient.<div class="box"> [[tnu2|MUD_TNU2]] == 0.0d0 0.0d0 0.0d0 ! m2/s<br /> [[tnu4|MUD_TNU4]] == 0.0d0 0.0d0 0.0d0 ! m4/s</div> | * Lateral, harmonic and biharmonic, constant, diffusion coefficient.<div class="box"> [[tnu2|MUD_TNU2]] == 0.0d0 0.0d0 0.0d0 ! m2/s<br /> [[tnu4|MUD_TNU4]] == 0.0d0 0.0d0 0.0d0 ! m4/s</div> | ||
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* Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.<div class="box"> [[morph_fac|MUD_MORPH_FAC]] == 1.0d0 1.0d0 1.0d0 ! nondimensional</div> | * Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.<div class="box"> [[morph_fac|MUD_MORPH_FAC]] == 1.0d0 1.0d0 1.0d0 ! nondimensional</div> | ||
* Logical switch (TRUE/FALSE) to activate writing of cohesive sediment into | * Logical switch ('''TRUE'''/'''FALSE''') to activate writing of cohesive sediment into output NetCDF file(s).<div class="box"> [[Hout|Hout(idmud)]] == T ! suspended concentration<br /> [[Hout|Hout(iMfrac)]] == T ! bed layer fraction<br /> [[Hout|Hout(iMmass)]] == T ! bed layer mass<br /> [[Hout|Hout(iMUbld)]] == T ! bed load at U-points<br /> [[Hout|Hout(iMVbld)]] == T ! bed load at V-points</div> | ||
==Non-cohesive Sediment Parameters== | ==Non-cohesive Sediment Parameters== | ||
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* Critical shear for erosion and deposition (N/m2).<div class="box"> [[tau_ce|SAND_TAU_CE]] == 0.07d0<br /> [[tau_cd|SAND_TAU_CD]] == 0.02d0</div> | * Critical shear for erosion and deposition (N/m2).<div class="box"> [[tau_ce|SAND_TAU_CE]] == 0.07d0<br /> [[tau_cd|SAND_TAU_CD]] == 0.02d0</div> | ||
* Porosity (nondimensional): | * Porosity (nondimensional): <span class="red">Vwater/(Vwater+Vsed)</span>. Its values range between '''0''' and '''1'''.<div class="box"> [[poros|SAND_POROS]] == 0.5d0</div> | ||
* Lateral, harmonic and biharmonic, constant, diffusion coefficient.<div class="box"> [[tnu2|SAND_TNU2]] == 0.0d0 ! m2/s<br /> [[tnu4|SAND_TNU4]] == 0.0d0 ! m4/s</div> | * Lateral, harmonic and biharmonic, constant, diffusion coefficient.<div class="box"> [[tnu2|SAND_TNU2]] == 0.0d0 ! m2/s<br /> [[tnu4|SAND_TNU4]] == 0.0d0 ! m4/s</div> | ||
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* Vertical diffusion coefficients.<div class="box"> [[Akt_bak|SAND_AKT_BAK]] == 5.0d-6 ! m2/s</div> | * Vertical diffusion coefficients.<div class="box"> [[Akt_bak|SAND_AKT_BAK]] == 5.0d-6 ! m2/s</div> | ||
* Nudging/relaxation time scales, inverse scales will be computed internally.<div class="box"> [[Tnudg|SAND_TNUDG]] == 0.0d0 | * Nudging/relaxation time scales, inverse scales will be computed internally.<div class="box"> [[Tnudg|SAND_TNUDG]] == 0.0d0 ! days</div> | ||
* Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.<div class="box"> | * Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.<div class="box">[[morph_fac|SAND_MORPH_FAC]] == 1.0d0 ! nondimensional</div> | ||
* Logical switches (TRUE/FALSE) to activate writing of non-cohesive sediment fields into | * Logical switches ('''TRUE'''/'''FALSE''') to activate writing of non-cohesive sediment fields into output NetCDF file(s).<div class="box"> [[Hout|Hout(isand)]] == T ! suspended concentration<br /> [[Hout|Hout(iSfrac)]] == T ! bed layer fraction<br /> [[Hout|Hout(iSmass)]] == T ! bed layer mass<br /> [[Hout|Hout(iSUbld)]] == T ! bed load at U-points<br /> [[Hout|Hout(iSVbld)]] == T ! bed load at V-points</div> | ||
==Bed layer and bottom sediment parameters== | ==Bed layer and bottom sediment parameters== | ||
* Logical switches (TRUE/FALSE) to activate writing of bed layer and bottom sediment fields into | * Logical switches (TRUE/FALSE) to activate writing of bed layer and bottom sediment fields into output NetCDF file(s), [1:[[Ngrids]]] values expected.<div class="box"> [[Hout|Hout(ithck)]] == T ! sediment layer thickness<br /> [[Hout|Hout(iaged)]] == T ! sediment layer age<br /> [[Hout|Hout(iporo)]] == T ! sediment layer porosity<br /> [[Hout|Hout(idiff)]] == F ! biodiffusivity</div> | ||
Revision as of 16:15, 30 June 2007
Sediment Model Input Script - sediment.in
The sediment model input script sediment.in is organized in several sections as shown below, with links to more detailed explanation where required.
Sediment model control switches
- Switch is used to control sediment model computation within nested and/or multiple connected grids, [1:Ngrids] values are expected.Lsediment == T
General sediment bed model controls
- Depositional bed layer thickness (m) criteria to create a new layer. If deposition exceeds this value, then a new layer is created, [1:Ngrids] values are expected.NEWLAYER_THICK == 0.01d0
- Bed load transport rate coefficient, [1:Ngrids] values are expected.BEDLOAD_COEFF == 0.05d0
Suspended Cohesive Sediment Parameters
There are NCS cohesive (mud) sediment tracers per nested grid in ROMS. Therefore, [1:NCS,1:Ngrids] values are expected for these parameters.
- Median sediment grain diameter (mm).MUD_SD50 == 0.01d0 0.06d0 0.10d0
- Sediment concentration (kg/m3).MUD_CSED == 0.0d0 0.0d0 0.0d0
- Sediment grain density (kg/m3).MUD_SRHO == 2650.0d0 2650.0d0 2650.0d0
- Particle settling velocity (mm/s).MUD_WSED == 0.1d0 1.0d0 2.0d0
- Surface erosion rate (kg/m2/s).MUD_ERATE == 5.0d-5 5.0d-5 5.0d-5
- Critical shear for erosion (N/m2).MUD_TAU_CE == 0.05d0 0.05d0 0.05d0
- Critical stress for deposition (N/m2), not used.MUD_TAU_CD == 0.01d0 0.01d0 0.01d0
- Porosity (nondimensional): Vwater/(Vwater+Vsed). Its values range between 0 and 1.MUD_POROS == 0.0d0 0.0d0 0.0d0
- Lateral, harmonic and biharmonic, constant, diffusion coefficient.
- Vertical diffusion coefficients.MUD_AKT_BAK == 5.0d-6 5.0d-6 5.0d-6 ! m2/s
- Nudging/relaxation time scales, inverse scales will be computed internally.MUD_TNUDG == 0.0d0 0.0d0 0.0d0 ! days
- Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.MUD_MORPH_FAC == 1.0d0 1.0d0 1.0d0 ! nondimensional
- Logical switch (TRUE/FALSE) to activate writing of cohesive sediment into output NetCDF file(s).Hout(idmud) == T ! suspended concentration
Hout(iMfrac) == T ! bed layer fraction
Hout(iMmass) == T ! bed layer mass
Hout(iMUbld) == T ! bed load at U-points
Hout(iMVbld) == T ! bed load at V-points
Non-cohesive Sediment Parameters
There are NNS non-cohesive (sand) sediment tracers per nested grid in ROMS. Therefore, [1:NNS,1:Ngrids] values are expected for these parameters.
- Median sediment grain diameter (mm).SAND_SD50 == 1.0d0
- Sediment concentration (kg/m3).SAND_CSED == 0.0d0
- Sediment grain density (kg/m3).SAND_SRHO == 2650.0d0
- Particle settling velocity (mm/s).SAND_WSED == 1.0d0
- Surface erosion rate (kg/m2/s).SAND_ERATE == 1.0d-5
- Critical shear for erosion and deposition (N/m2).
- Porosity (nondimensional): Vwater/(Vwater+Vsed). Its values range between 0 and 1.SAND_POROS == 0.5d0
- Lateral, harmonic and biharmonic, constant, diffusion coefficient.
- Vertical diffusion coefficients.SAND_AKT_BAK == 5.0d-6 ! m2/s
- Nudging/relaxation time scales, inverse scales will be computed internally.SAND_TNUDG == 0.0d0 ! days
- Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.SAND_MORPH_FAC == 1.0d0 ! nondimensional
- Logical switches (TRUE/FALSE) to activate writing of non-cohesive sediment fields into output NetCDF file(s).Hout(isand) == T ! suspended concentration
Hout(iSfrac) == T ! bed layer fraction
Hout(iSmass) == T ! bed layer mass
Hout(iSUbld) == T ! bed load at U-points
Hout(iSVbld) == T ! bed load at V-points
Bed layer and bottom sediment parameters
- Logical switches (TRUE/FALSE) to activate writing of bed layer and bottom sediment fields into output NetCDF file(s), [1:Ngrids] values expected.Hout(ithck) == T ! sediment layer thickness
Hout(iaged) == T ! sediment layer age
Hout(iporo) == T ! sediment layer porosity
Hout(idiff) == F ! biodiffusivity
