Complex project: Extra containerbehandelingscapaciteit in het havengebied Antwerpen - Deelrapport 2 – Geïntegreerd onderzoek – deel nautica: simulatiestudie voor het verkeer ter hoogte van Duplexdok en Deurganckdok As was done in previous simulations for L-square and Duplex an increase of the velocity magnitude with 15% (factor 1.15) was implemented to take into account a small underestimation of the HD calculations compared to measured current data. The metadata for currentVelocity give the opportunity to execute a transformation with scale, offset and rotation. Only the scale factor had been changed to 1.15 (Figure 6). Figure 6 – Input data structure for setting the metadata of the current field 2.1.5 Wind For the uniform wind field with variability in wind velocity and direction (wind gusts) a spectrum was used that resembles a Von Karman spectrum but based on a new structure. During the first and second simulation days (e.g. run M4 in Figure 7) wind fields with slightly different spectral definition in that new structure were implemented which have been improved during the last simulation day (run M5 in Figure 7). For M4 for all frequencies in the spectrum the same phase was applied while this phase was randomised for the simulation runs on the third day. The input fields for a wind field of east 6 Bft are summarised in: E.g. data,..\win\E6.wind.v30.xml 0 0 An example of a wind field time variation during two runs with northern wind 6 Bft are shown in Figure 7. 10 WL2022R21_043_2 Final version