Bij de renovatie van de roldeuren 1 en 4 van de Vandammesluis werd het aantal vlinderkleppen uitgebreid van 5 naar 9. In kader van deze uitbreiding heeft WL door middel van simulaties een openingswet voor de kleppen opgesteld (advies 12_095).
Na ingebruikname van de roldeur in het bovenhoofd wordt vastgesteld dat de voorgestelde openingssnelheid te laag is voor de hydraulische unit​. Om deze reden wordt de vraag gesteld of het mogelijk is om de openingssnelheid van de kleppen te verhogen door de kleppen in meerdere series te openen of door voor een aantal kleppen te wachten tot een bepaald restverval bereikt is.
Vertrekkende van de gewenste openingstijd per hefschuif wordt voor beide roldeuren een aantal simulaties uitgevoerd met het ikv project 12_095 opgestelde model van de sluis. De variabelen hierin zijn het aantal te openen kleppen per fase en de wachttijd tussen twee openingsfases in. Ook wordt onderzocht of het openen van een set kleppen vanaf een bepaald restverval voordelig is.
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