Watershed & Water Quality Modeling Technical Support Center WASP7 Course Sediment Transport.

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Presentation transcript:

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Sediment Transport

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Solids State Variables EUTRO-7 Module EUTRO-7 Module –Phytoplankton (mg C/L) –Detritus (mg C/L) –Inorganic S (mg dw/L) TOXI-7 Module –Inorganic Fines (mg dw/L) –Sands (mg dw/L) –Biotic Solids (mg dw/L)

Watershed & Water Quality Modeling Technical Support Center WASP7 Course EUTRO-7 Solids Kinetics Dissolution Phytoplankton Growth DetritusDetritus Respiration Death Periphyton Growth Death Respiration Settling Settling Inorganic Solids Settling

Watershed & Water Quality Modeling Technical Support Center WASP7 Course TOXI-7 Solids Kinetics Production S1 - Inorganic Fines S3 - Biotic Solids Dissolution (1-f ash ) (f ash ) Net Biotic SettlingSettling S2 - Sands Settling

Watershed & Water Quality Modeling Technical Support Center WASP7 Course TOXI-7 Biotic Solids Kinetic Data ConstantsConstants –Net biotic production rate, g dw/m 3 -day –Production temperature correction factor –Net detrital dissolution rate constant, day -1 –Dissolution temperature correction factor –Fraction ash free dry weight ParametersParameters –Production rate spatial scale multiplier –Dissolution rate spatial scale multiplier Time FunctionsTime Functions –Production rate time scale multiplier

Watershed & Water Quality Modeling Technical Support Center WASP7 Course TOXI-7 Biotic Solids Kinetic Data

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Solids Transport Processes

Watershed & Water Quality Modeling Technical Support Center WASP7 Course TOXI-7 Solids Transport Data SystemsSystems –Simulation option (simulate, constant, bypass) –Particulate transport field (Solids 1, Solids 2, Solids 3) –Particle density, g dw/mL (defaults to 2.65) –Maximum concentration, mg/L (reset to 3.0e6) FlowsFlows –Flow field use (check Solids 1, Solids 2, or Solids 3) –Scale and conversion factors (internal units, m/sec) –Flow function (e.g., insert settling, resuspension) –Segment pairs –Surface area, m 2 (under “fraction of flow”) –Settling or resuspension velocity versus time, m/sec

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Implementation – Systems Data If unchanged, particle density defaults to 2.65 g/mL If unchanged, maximum concentration for solids defaults to 3.0e+6 mg/L

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Implementation – Segment Data Input benthic volume, m 3 Input benthic depth, m Specify segment type Map bottom segments

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Implementation – Initial Conditions Silts, mg/LSands, mg/LBiotic Solids, mg/L

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Implementation – Flow Fields Point and press “Insert” twice

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Implementation – Settling Data days/second surface area, m 2 Settling velocity, m/day

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Solids Flow

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Solids Flow Data

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Bed Volume Option 2

Watershed & Water Quality Modeling Technical Support Center WASP7 Course g = acceleration of gravity = 981cm/sec 2  = absolute viscosity of water = 0.01 poise (g/cm 2 -sec) at 20 o C d p = particle diameter, mm fine sand = 0.05 – 0.2 silt = – 0.05 clay= –  D = probability of deposition upon contact with bed Settling & Deposition Velocities

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Stokes Settling Velocities, m/day Particle Diameter, mm Particle Density, g/cm Fine Sand Silt Clay

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Stream Sedimentation Regimes

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Benthic Parameter Equations

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Benthic Parameter Values n DDDD BBBB%water

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Pond Solids Example - External Parameters Surface Water Depth, 1 m Surface Area, 10 4 m 2 Surface Sediment, 2 cm Subsurface Sediment, 5 cm Water, 10 4 m 3 /day Silt, 60 kg/day Sand, 40 kg/day Inflow

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Pond Solids Example – Internal Parameters POM Dissolution, day -1 Internal Biotic Production, 2 g/m 3 -day Sand, 1.0 g/mL, Silt and POM, 0 g/mL TSS (Silt and POM) Sand, 1.5 g/mL, Silt and POM, 0 g/mL Deposition, 0.5 m/day Resuspension, 0.05 mm/day

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Solids Kinetic Data

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Simulated Water Column Solids

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Simulated Surficial Benthic Solids

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Simulated Subsurface Benthic Solids

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Simulated Benthic Properties

Watershed & Water Quality Modeling Technical Support Center WASP7 Course Simulated Burial Rates