SOBEK is a powerful modelling suite for flood forecasting, optimization of drainage systems, control of irrigation systems, sewer overflow design, river morphology, salt intrusion and surface water quality. The modules within the SOBEK modelling suite simulate the complex flows and the water related processes in almost any system. The modules represent phenomena and physical processes in an accurate way in one-dimensional (1D) network systems and on two-dimensional (2D) horizontal grids. It is the ideal tool for guiding the designer in making optimum use of resources.
Fields of application
SOBEK is a modelling suite designed for water authorities and water management consultancies. Is is suited for modelling and analysis of:
- Irrigation and drainage systems / rural systems: open channel hydraulics
- River systems
- Sewerage and urban drainage systems (closed conduits, pipe flow)
- Inundation and flooding scenario simulations
- Water quality predictions
- and the design and optimization of control systems for canal and waterway automation
SOBEK has been developed jointly with Dutch public institutes and governmental organisations, research institutes, universities and private consultants all over the world.
SOBEK offers one software environment for the simulation of all management problems in the areas of river and estuarine systems, drainage and irrigation systems and waste water and storm water systems. This allows for combinations of flow in closed conduits, open channels, rivers overland flows, as well as a variety of hydraulic, hydrological and environmental processes.
Powerful simulation engine
The hydrodynamic 1D/2D simulation engine is the computational core of SOBEK. This engine allows the combined simulation of pipe, river-, channel- and overland flow through an implicit coupling of 1D and 2D flow equations. SOBEK is the ideal tool for studying the effects of dam breaks, river floods, dike breaches, urban flooding etc.
Robust numerical operations
The hydrodynamic 1D/2D simulation engine is equipped with a very robust scheme for numerical computation. It also guarantees mass conservation, even in case of transitions through suddenly varying cross section shapes. The engine combines computations of subcritical and supercritical flow, at scales selected by the user. It handles flooding and drying of channels without the use of artificial methods such as the Preissmann slot.
The hydrodynamic 1D/2D simulation engine has a very efficient numerical solution algorithm. The algorithm is based upon the optimum combination of a minimum connection search direct solver and the conjugate gradient method. It also applies a variable time step selector, which suppresses the waste of computational time wherever this is feasible.
Size of models
The size of the model is only limited by the size of the internal memory of the computer used.
How to get SOBEK?
The latest fully validated SOBEK Suite is version 2.15.003. This version is available via our SOBEK Service Packages. You can easily order these products via email@example.com and then download the software via our Download portal.
SOBEK Suite versus Delft3D Flexible Mesh Suite
Within our Next Generation Hydro Software (NGHS) project, Deltares is working on the integration and improvement of its hydro software. Important technological innovations make up the new Delft3D Flexible Mesh Suite (Delft3D FM) for integral simulations. Delft3D FM combines proven technology from the hydrodynamic engines of Delft3D 4 and SOBEK 2 and adds flexible administration and in near future unique subgrid methods. The new, advanced software will allow water managers and modelers to do their work better and faster.
Delft3D FM will be the aggregated successor of SOBEK-Rural and DUFLOW for irrigation and drainage systems, SOBEK-RE and SOBEK-River for river systems, and SOBEK-Urban for sewerage and urban drainage systems. Delft3D FM is set up within the Delta Shell Framework, providing additional functionality, extensive compatibility and an intuitive user interface. The current performance (simulation time) of the prototypes of Delft3D FM with 1D-2D functionality, also called SOBEK 3, is comparable to the performance of DUFLOW and SOBEK-RE. SOBEK 3 prototypes are available for all SOBEK 2 users. Check the support tab for migrating SOBEK 2 to SOBEK 3 prototype.
Delft3D FM is open source software. We aim at actively promoting Delft3D FM in open source in 2017.
As long as not all functionality of SOBEK 2 is available in the new Delft3D FM, we will provide SOBEK 2 as part of our SOBEK Service Packages.
Delft3D FM Key Features
The most prominent features of Delft3D FM:
- Central map with spatial editor
- Customizable and dockable window views
- Connectivity to online data bases
- Python scripting
- Delft-FEWS, OpenDA and OpenMI compatibility
- Delta Shell Framework
The validation of a modelling system such as SOBEK and Delft3D FM requires continuous attention. Even though the individual modules of the suite have been thoroughly tested during their development, the suite as a whole requires intensive testing and validation too. To this end, a regular programme is established and tests of many of the most likely combinations are continually performed. As a policy, new versions are released only after an extensive beta testing period, to ensure that our users are only provided with stable and validated products.
SOBEK allows you to simulate the interaction of water and water related processes in time and space. The suite is mostly used for the modelling of integrated water systems for water management, design, planning and policy making. SOBEK consists of a number of well-tested and validated modules, which are linked to and integrated with one-another. These modules are listed below.
SOBEK 1DFLOW (Rural)
This module works with the complete de Saint Venant Equations, including transient flow phenomena and backwater profiles. It models any cross section (open and closed), including asymmetrical profiles, and y-z profiles. It even allows you to define different subsections within a...
SOBEK 1DFLOW (Urban)
This module uses the complete de Saint Venant Equations, thus including backwater and transient flow phenomena. It models a wide variety of cross sections and manhole shapes (including user-defined ones) and allows you to build up your own cross section and...
SOBEK 2DFLOW (Overland Flow)
This module is fully integrated with the SOBEK 1DFLOW (Rural) and SOBEK 1DFLOW (Urban) modules for accurate flood simulation of river systems, polder areas, dikes/levees/dam breaches, streets, etc. It is based upon the complete de Saint Venant Equations. The hydrodynamic 1D/2D simulation engine...
SOBEK RR (Rainfall Runoff Open Water)
This module contains a library of Rainfall Runoff modules from polder sub-catchment scale up to river catchment scale, such as HBV and SCS. The catchment areas can easily be modelled in a lumped or detailed manner with no restriction to the...
SOBEK 1DWAQ (Water Quality)
This module is based on the water quality 1D/2D/3D simulation engine which offers you more than 30 years of collective water quality modelling experience world-wide. It models almost any water quality variable and its related water quality processes. This component is...
SOBEK-RTC (Real Time Control)
Real-time control often saves money in the construction, alteration and management of the water system infrastructure. The SOBEK-RTC module shows to what extent the existing infrastructure can be used in a better way. It allows you to simulate complex real-time control of...
Deltares offers high quality services to consultancy firms, governmental organizations, research institutes and universities worldwide.
Several SOBEK service packages, including fully validated high quality SOBEK distributions, are available to suit your specific needs!
SOBEK – Hydrodynamics-Hydrology Basic Service Package
The SOBEK Hydrodynamics-Hydrology Basic Service Package contains: The right of use of the distribution “SOBEK Hydrodynamics-Hydrology”. 12 months update and upgrade subscription. 12 months support on Service Level 1 with 8 support hours. The minimum subscription period is one year (€...
SOBEK – Full Basic Service Package
The SOBEK Full Basic Service Package contains: The right of use of the distribution “SOBEK Hydrodynamics-Hydrology & Water Quality” 12 months update and upgrade subscription. 12 months support on Service Level 1 with 16 support hours. The minimum subscription period is...
SOBEK – Hydrodynamics-Hydrology Advanced Service Package
The SOBEK Hydrodynamics-Hydrology Advanced Service Package contains: The right of use of the distribution “SOBEK Hydrodynamics-Hydrology” 12 months update and upgrade subscription. 12 months support on Service Level 2 with 24 support hours: initial and ongoing response within 2 business days. The...
SOBEK – Full Advanced Service Package
The SOBEK Full Advanced Service Package contains: The right of use of the distribution “SOBEK Hydrodynamics-Hydrology & Water Quality” 12 months update and upgrade subscription. 12 months support on Service Level 2 with 48 support hours: initial and ongoing response within...
SOBEK – Professional Service Package
The SOBEK Professional Service Package contains: The right of use of the distribution “SOBEK Hydrodynamics-Hydrology & Water Quality” 12 months update and upgrade subscription 12 months support on Service Level 3 with 64 support hours: initial and ongoing response within 1...
SOBEK – Educational Service Package
The SOBEK Educational Service Package contains: The right of use of the distribution “SOBEK Hydrodynamics-Hydrology & Water Quality”. 12 months update and upgrade subscription. 12 months support on Service Level 1 with 8 support hours. The minimum subscription period is one...
Maintenance and support is included in our SOBEK service packages. Please check the service packages tab for the packages that suits your specific needs.
The SOBEK support desk is the user’s instantly accessible contact point for all questions and problems concerning the software. The support team answers the majority of questions instantly or takes responsibility that a timely reply is given by one of the other SOBEK team members. All incoming queries on the software packages, current or future performance, are recorded in our issue tracker system. This system is an important instrument in the realization of improvements to the package, the manuals and the Deltares Academy training courses.
Do you have questions about purchasing the software, please contact the Sales department and you have software technical questions, please contact the Support department . See below for contact information:
|T:+ 31 (0)88 335 8188||T:+ 31 (0)88 335 8100|
Migrating SOBEK 2 model to SOBEK 3
Please follow this link for some guidance.
Frequently asked questions
· The software is delivered with a manual, including Getting Started and Tutorials.
· Windows Server 2008
· Windows 7
· Windows 8.1
· Windows 10
Minimum hardware specifications:
· 1.5 GHz Intel Core processor or equivalent
· 2 GB of RAM
· 2 GB free hard disk space
· a graphics adapter with 128 MB video memory and screen resolution of 800×600
Preferred hardware specifications:
· 3 GHz Intel Core processor or equivalent
· 6 GB of RAM, 64-bit Windows Operating System
· 20 GB free hard disk space
· a graphics adapter with 256MB video memory and a screen resolution of 1024×768
|Version 2.15.003 2016-12-21|
Download Release notes SOBEK 2.15.003
|Version 2.14.001 2015-07-09|
|Version 2.13.002 2013-05-13|
|Version 2.12.004 2012-09-12|
Download Release notes SOBEK 2.12.004
|Version 2.12.003 2012-07-12|
Download Release notes SOBEK 2.12.003
- Solution for problem: Incorrect results in case Y-Z profiles and/or Asymmetrical trapezium profiles are used in combination with Bos & Bijkerk friction type anywhere in a model. Description: in case the Bos & Bijkerk friction type is used anywhere in a model schematisation, the computational core should not switch off the vertically segmented conveyance method applied for all Y-Z profiles and Asymmetrical trapezium profiles, even if another friction formulation is used at such profile.
- In SOBEK 2.12.003 the algorithm of the PID controller has been improved. For some models this might result in computational differences. Clients using models with PID controllers are advised to verify if computational differences between SOBEK 2.12.003 and previous SOBEK versions are acceptable. In case these differences are not acceptable, the gain factors (K p, K i, K d) of the PID controller in SOBEK 2.12.003 need to be retuned.
|Version 2.12.002a 2011-03-23|
Download Release notes SOBEK 2.12.002a
|Version 2.12.002 2010-10-27|
Download Release notes SOBEK 2.12.002
|Version 2.12.001 2009-05-20|