Two-Phase Maps
Generates flood maps integrating two-phase simulation data, offering a description of flooding scenarios for enhanced analysis.
Site Characteristics
Static layers defining the physical and geometric properties of the model domain. These maps provide the terrain framework controlling both fluid and solid phase movement.
Ground elevation
\(\qquad\) TOPO.DAT - Grid element, x- and y-coordinates, and
their elevations (ft or m).
Basic
Primary outputs from two phase simulations. These layers describe floodplain flow, mudflow behavior, sediment concentration, and combined depth conditions resulting from phase interaction.
Maximum Flood Depth
\(\qquad\) DEPTH.OUT - Maximum combined channel/floodplain flow
depths (ft or m).
Maximum Flood Velocity Vectors
VELFP.OUT - Maximum floodplain flow velocity (ft/s
or m/s).VELDIREC.OUT - Flow maximum velocity direction
(flow directions 1 to 8).Maximum Flood Sediment Concentration
\(\qquad\) CVFPMAX.OUT - Floodplain fluid maximum sediment
concentration by volume (vsed/vtotal).
Maximum Flood Velocity
\(\qquad\) VELFP.OUT - Maximum floodplain flow velocity (ft/s or
m/s).
Maximum Combined Depth
\(\qquad\) DEPTHMAX_2PHASE_COMBINED.OUT - Maximum flow depth of
the combined two phase fluid and mudflow depths (added together) (ft or
m).
Final Flood Depth
\(\qquad\) FINALDEP.OUT - Final floodplain flow depths (ft or
m).
Final Flood Velocity Vectors
FINALVEL.OUT - Flow velocity at the end of the
simulation (ft/s or m/s).FINALDIR.OUT - Flow final velocity direction at the
end of the simulation (flow directions 1 to 8).Final Flood Velocity
\(\qquad\) FINALVEL.OUT - Flow velocity at the end of the
simulation (ft/s or m/s).
Final Combined Depth
\(\qquad\) FINALDEP_COMBO.OUT - Combined floodplain fluid and
mudflow maximum flow depths. Floodplain fluid or mudflow max depth
(whichever is greater) (ft or m).
Derived
Secondary metrics computed from two phase hydraulic results. These layers combine depth and velocity to represent overall hazard intensity from coupled fluid and sediment processes.
Depth x Velocity
\(\qquad\) VEL_X_DEPTH.OUT - Maximum of velocity times depth for
each floodplain element (ft²/s or m²/s).
Time
Time based indicators showing when critical two phase conditions occur. These maps support analysis of flood and mudflow onset, peak interaction, and temporal evolution.
Time to 1 ft (0.3 m)
\(\qquad\) TIMEONEFT.OUT - The initial time to one foot of depth
(hrs).
Time to 2 ft (0.6 m)
\(\qquad\) TIMETWOFT.OUT - The initial time to two feet of depth
(hrs).
Time to Max
\(\qquad\) TIMETOPEAK.OUT - The time of occurrence of the
maximum depth (hrs).
Channel
Hydraulic results specific to channel elements under two phase flow conditions. These maps describe channel response to combined fluid and sediment transport.
Maximum Channel Depth
\(\qquad\) DEPCH.OUT - Maximum channel flow depths (ft or m).
Maximum Channel Velocity
\(\qquad\) VELOC.OUT - Maximum channel flow velocity (ft/s or
m/s).
Final Channel Depth
\(\qquad\) DEPCHFINAL.OUT - Final channel flow depths (ft or m).
Final Channel Velocity
\(\qquad\) VELCHFINAL.OUT - Final channel flow velocities (ft/s
or m/s).
Structures
Outputs describing interaction between two phase flows and engineered structures. These layers support evaluation of levee performance under combined hydraulic and sediment loading.
Levee Deficit
\(\qquad\) LEVEEDEFIC.OUT - Levee freeboard deficit.
Definition:
0, freeboard > 3 ft
1, 2 ft < freeboard < 3 ft
2, 1 ft < freeboard < 2 ft
3, freeboard < 1 ft
4, levee overtopped
Mudflow
Mudflow specific results extracted from two phase simulations. These layers describe mudflow depth, velocity, direction, and sediment concentration as a distinct phase.
Maximum Mudflow Depth
\(\qquad\) DEPFPMAX_MUD.OUT - Floodplain maximum mudflow depth
(ft or m).
Maximum Mudflow Velocity
\(\qquad\) VELFP_MUD.OUT - Floodplain maximum mudflow velocity
in the reported outflow direction (ft/s or m/s).
Maximum Mudflow Sediment Concentration
\(\qquad\) CVFPMAX_MUD.OUT - Floodplain mudflow maximum sediment
concentration by volume (vsed/vtotal).
Maximum Mudflow Velocity Vectors
VELFP_MUD.OUT - Maximum floodplain mudflow velocity
(ft/s or m/s).VELDIREC_MUD.OUT - Mudflow maximum velocity
direction (flow directions 1 to 8).Final Mudflow Depth
\(\qquad\) FINALDEP_MUD.OUT - Final mudflow depth (ft or m).
Final Mudflow Velocity
\(\qquad\) FINALVEL_MUD.OUT - Floodplain final mudflow velocity
in the reported outflow direction (ft/s or m/s).
Final Mudflow Sediment Concentration
\(\qquad\) FINALCVFP_MUD.OUT - Final floodplain mudflow sediment
concentration by volume (vsed/vtotal).
Final Mudflow Velocity Vectors
FINALVEL_MUD.OUT - Final floodplain mudflow
velocity (ft/s or m/s).FINALDIR_MUD.OUT - Mudflow final velocity direction
(flow directions 1 to 8).Sediment
Sediment transport and bed change results associated with two phase simulations. These maps describe erosion, deposition, and net bed elevation change driven by coupled processes.
Maximum Deposition
\(\qquad\) SEDFP.OUT - Maximum deposition (ft or m)
Maximum Scour
\(\qquad\) SEDFP.OUT - Maximum scour (ft or m)
Final Bed Difference
\(\qquad\) SEDFP.OUT - Final bed elevation difference (ft or m)
Hydraulic
Advanced hydraulic force and energy metrics for two phase conditions. These layers quantify pressures and forces acting on structures under combined fluid and mudflow loading.
Specific Energy
\(\qquad\) SPECENERGY.OUT - Maximum specific energy for a
floodplain grid element (ft or m).
Static Pressure
\(\qquad\) STATICPRESS.OUT - Spatially variable static force per
linear foot for each floodplain element (lbf/ft or N/m).
Impact Force
\(\qquad\) IMPACT.OUT - Impact force per linear foot of
structure on the floodplain (lbf/ft or N/m).