1 Stitle (a80) ROMS - SED_TOY (consolidation) - Test 2 Sd(1-NST), CSED, SRHO, WSED, ERATE, TAU_CE, TAU_CD, BED_FRAC(1:NLAY) 0.0625 0. 2650. 2. 0.0015 0.1 0.1 41*0.25 0.140 0. 2650. 8. 0.0015 0.1 0.1 41*0.25 0.004 0. 2650. 0.1 0.0005 0.05 0.1 41*0.25 0.030 0. 2650. 0.6 0.0005 0.05 0.1 41*0.25 3 BTHK(1:NLAY) 41*0.001 4 BPOR(1:NLAY) 41*0.6 5 Hrip 0.01 6 Lrip 0.1 7 bedload_coeff 1. 8 morph_fac 1. 9 transC 0.03 10 transN 0.2 11 tcr_min 0.030 12 tcr_max 1.5 13 tcr_slp 2 14 tcr_off 3.4d0 15 tcr_tim 28800.0d0 99 END of sediment input data ! !===================================================================== ! Copyright (c) 2004 UCLA/Rutgers !==================================== Meinte Blaas | Hernan G. Arango = ! GLOSSARY ======== *** CARD 1: String with a maximum of eighty characters. Stitle Sediment case title. *** CARD 2: Sediment grain parameters & initial values (NST lines). Non-Cohesive sediment first Sd Diameter of grain size class [mm]. CSED Initial concentration (spatially uniform) [mg/l]. SRHO Density of sediment material of size class [kg/m3]. Quartz: SRHO=2650 kg/m3 WSED Settling velocity of size class [mm/s]. Typically WSED = 1E3* {visk*(sqrt(10.36^2+1.049*D^3)-10.36)/d50} [mm/s] (Soulsby 97) with D=d50*(g*(srho/rhow-1)/(visk^2))^0.33333 rhow=1000 kg/m3; d50=Sd*1.e-3 m; visk=1.3e-3/rhow m2/s; g=9.8 m/s2 ERATE Erosion rate of size class [kg/m2/s]. Typically ERATE =gam0*WSED*1.e-3*SRHO [kg/m2s]; with gam0=1E-3 - 1E-5 (Smith & McLean, Drake&al) TAU_CE Critical shear stress for sediment motion [N/m2] (initiation of bedload for coarses, suspension for fines). Typically TAU_CE =tau_cb=thetcr.*(g*(srho-rhow).*d50) [N/m2]; (Shields, bedload) with thetcr = 0.3./(1+1.2*D) + 0.055*(1-exp(-0.02*D)) (Soulsby & Whitehouse 97) TAU_CE = rhow*(0.8 WSED*1E-3)^2 [N/m2] (suspended load) TAU_CD Critical shear stress for depostion of cohesive sediments [N/m2] BED_FRAC Volume fraction of each size class in each bed layer (NLAY columns) [0