MIKE Flood
An integrated tool for flood plain and
storm surge studies
MIKE Flood combines
 MIKE 11
 MIKE 21
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MIKE Flood
MIKE Flood is used
If a two-dimensional (MIKE21)
description is needed in some areas
and where significant benefits exist
when combined to a one-dimensional
(MIKE11) model
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MIKE Flood
Examples :
A detailed velocity pattern is required locally
(MIKE21) but exchange of flows with the
river is regulated by complex structures
(movable gates, culverts, special weirs etc.)
simulated in a MIKE11 model
A general MIKE11 model for multiple
purpose (eg. flow analysis, water quality,
sediment transport, flood forecasting) can
provide boundary condition to a local twodimensional area (and vice-versa)
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MIKE FLOOD
Coupling of MIKE 11 and MIKE 21
1-D Model of twoone2-D
 advection-dispersion
dimensional flow
 hydrodynamics
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Types of coupling
MIKE 11 boundary to a MIKE 21 boundary
Lake, estuary
etc.
MIKE 11 boundary to a MIKE 21 source point
Flood plain
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Time Integration
 Different Time step in MIKE11 and MIKE21
 Data exchange at mike11 time step n and n+1
 MIKE11 always ahead: MIKE21 value at time step n applied
as boundary condition at time step n+1 to progress MIKE11
with the next time step. Following the MIKE11 time step, the
MIKE21 executes (smaller) time steps up to new n+1.
Mike 21
Mike 11
n+1
n
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