Ontwerpvoorbeeld: krachten in sluisdeur

A sluice gate is a vertical barrier that controls water flow in a channel.

To calculate the forces acting on a sluice gate, consider water flowing under the gate.

The forces depend on the upstream and downstream water depths.

On the upstream side, the depth is z₁, and on the downstream side, the depth is z₂.

The difference in pressure between the two sides creates a net force on the gate.

Using Bernoulli's principle, the water's velocity under the gate, V₂, can be calculated based on the pressure difference and height drop.

The reaction force on the gate is computed from the hydrostatic force acting due to the water column on both sides.

The force is larger when the gate is closed because of the greater pressure difference.

When the gate is opened, the reaction force decreases as water flows freely under the gate, reducing the net hydrostatic pressure difference.

This principle allows for the determination of the anchoring force required to keep the gate in place during operation.