sediment.in
The text below shows the entries in the default sediment.in file, with links to more detailed explanation where required.
! There are 5 sections to the sediment INPUT File. 1) Sediment control switches, for nested grids. 2) Sediment Bed Model parameters. 3) Non-Cohesive sediment paramters. 4) Cohesive sediment paramters. 5) Bed layer and bottom sediment output properties.
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1) Sediment model control switch.
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Switch is used to control sediment model computation within nested and/or multiple connected grids, [1:Ngrids].
Lsediment == T
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2) General sediment bed model controls.
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Depositional bed layer thickness criteria to create a new layer (m). If deposition exceeds this value, then a new layer is created, [1:Ngrids].
NEWLAYER_THICK == 0.01d0
Bed load transport rate coefficient. [1:Ngrids].
BEDLOAD_COEFF == 0.05d0
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3) Suspended Cohesive Sediment Parameters, [1:NCS,1:Ngrids] values expected.
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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 and deposition (N/m2).
MUD_TAU_CE == 0.05d0 0.05d0 0.05d0
Critical stress for deposition is not used. MUD_TAU_CD == 0.01d0 0.01d0 0.01d0
Porosity (nondimensional: 0.0-1.0): Vwater/(Vwater+Vsed).
MUD_POROS == 0.0d0 0.0d0 0.0d0
Lateral, harmonic and biharmonic, constant, diffusion coefficient.
MUD_TNU2 == 0.0d0 0.0d0 0.0d0 ! m2/s MUD_TNU4 == 0.0d0 0.0d0 0.0d0 ! m4/s
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 HISTORY output file.
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
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3) Non-cohesive Sediment Parameters, [1:NNS,1:Ngrids] values expected.
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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).
SAND_TAU_CE == 0.07d0 SAND_TAU_CD == 0.02d0
Porosity (nondimensional: 0.0-1.0): Vwater/(Vwater+Vsed).
SAND_POROS == 0.5d0
Lateral, harmonic and biharmonic, constant, diffusion coefficient.
SAND_TNU2 == 0.0d0 ! m2/s SAND_TNU4 == 0.0d0 ! m4/s
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 1.0d0 1.0d0 ! nondimensional
Logical switches (TRUE/FALSE) to activate writing of non-cohesive sediment into HISTORY output file.
Hout(idsand) == 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
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5) Bed layer and bottom sediment parameters, [1:Ngrids] values expected.
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Hout(ithck) == T ! sediment layer thickness Hout(iaged) == T ! sediment layer age Hout(iporo) == T ! sediment layer porosity Hout(idiff) == F ! biodiffusivity
