Hydraulics and Hydrodynamics
Software Mike 21
Mike 21 software is a suite of programs developed by DHI that is designed for numerical simulation of 2D free-surface flows. Mike 21 is about hydraulic simulation and related processes such as:
Marine and tidal currents - Hydraulics of flow in ports due to ship movement, wave disturbance, direction of breakwaters, etc. - Heat and salinity cycles - Erosion, sediment transport and accumulation - Water quality and pollution dispersion
It can be used in lakes, estuaries, bays, coastal areas, and seas.
To achieve greater flexibility for different working conditions, this software consists of 4 program sets as follows:
1) Hydraulics of coasts and seas
2) Environmental hydraulics
3) Sedimentation processes
4) Waves
Software Mike 11
Mike 11 software is a suite of programs developed by DHI that is used for numerical simulation of flow, water quality, and sediment transport in estuaries, rivers, irrigation systems, canals, etc.
Mike11 is a one-dimensional and dynamic model for the design, management, and operation of simple or complex river and canal systems. Due to its high flexibility and remarkable speed, it is an efficient software for water resources and water quality management.
Mike11 software has a modular structure and is made up of a number of program sets, each of which is designed to simulate one of the various processes of the river system. Each program set can be run alone and the input and output of this set can be automatically used for other sets. The main modules of Mike 11 software are:
Rainfall-runoff
Hydrodynamics
Transport-diffusion and adhesive deposition
Water quality
Non-adhesive sediment transport
Model 2D DIVAST
DIVAST (Depth Integrated Velocities and Solu- te Transport) software is a two-dimensional horizontal model that was first developed by Mr. Falconer in 1976. This model includes three parts: hydrodynamics, sediment transport, and pollutant transport. It predicts the flow conditions, sediment transport rates, and the distribution of different pollutant concentrations in the studied environment. It can generally be used in dam reservoirs, non-stratified basins, and especially in coastal waters where the flow in the plan has relatively severe changes compared to the depth and vertical mixing is well-performed.
The mathematical modeling of sediment transport in the DIVAST model for suspended sediments is based on the transport-diffusion equation. This model, which is a two-dimensional horizontal model, can be used when the grid size used in the study area grid is larger than the horizontal scale required to adjust the suspended sediment transport rate to the sediment transport rate based on the carrying capacity. The use of a two-dimensional mathematical model of sediment transport has the advantage of requiring less memory and implementation cost than three-dimensional models.