This is an important bug fix release that addresses the possible undefined behavior found in a few components (see Errata announcement WANDA 4.5.1 for more information). It also addresses a few other small bugs in the user interface, mostly related to the upgrade process of cases made in earlier versions of WANDA (see Release notes & Errata for a complete list).
On February 16th a configuration error was found in Wanda 4.5.1 that could lead to undefined behavior in the following components:
- Air valve (Vent & Vent2Leg)
- Pump when using drive type "Motorfreq"
- Cross (both merging and dividing flow)
- Fast filling pipe
- Orifice
The undefined behavior typically results in a crash, but as the possibility of wrong results cannot be ruled out, we suggest not using Wanda 4.5.1 for calculations involving the above components. On Tuesday the 21st of February the release of Wanda 4.5.2 is scheduled to resolve these issues.
Deltares is pleased to announce the availability of WANDA 4.5. This release marks the sixth release of the WANDA 4 series, and includes many improvements including:
- The presence of short (8dot3) filenames is no longer required.
- Writing output data is faster, which is most noticeable when running simulations on network storage.
- Stability improvements to the Y-junction, the Vent2Leg, and the fast filling pipe.
Wanda 4.5 can be downloaded from the Deltares Download Portal.
UNESCO-IHE Institute for Water Education offers a two-week short course on the design of the hydropower water conduit system. These provides theoretical understanding and practical insights to the geotechnical, hydraulic and structural design of the power waterway in global, but also in its particular parts. The course deals with parameters needed for optimal design, theoretical design background and practical design examples using the WANDA software.
Date and location: 13-24 March 2017, Delft, Netherlands
For more information: http://www.unesco-ihe.org/hydropower-water-conduit-design