Hydrostatic Forces on Surfaces
OpenHydroLab · plane (horizontal / vertical / inclined) & curved surfaces
Surface type
Horizontal
Vertical
Inclined
Curved
Plane surface
Angle to free surface θ
Plate length along plane L
Depth of upper edge h
top
Curved surface (circular arc)
Radius R
Depth of pivot O, h
O
Arc span
Fluid
above
the arc — F
v
acts downward, real volume
Fluid & geometry
Width into the page b
Density ρ
Show
Pressure distribution arrows
Dimensions & depth grid
Travelling pressure probe (drag it)
Vertical prism above the arc
INCLINED PLANE SURFACE
Presets from the worked problems
Vertical plate — B=1 m, L=2.5 m, top edge at the surface
Dam face at 45° — 10 m deep, per metre width
Inclined gate at 30° — hinged 2 m below the surface
Gate on a shaft at 53.13° — 3.5 m × 2 m
Quadrant gate — R=1 m, 3 m wide, O at the surface
Radial gate — R=2 m, 2 m wide, O at 3 m depth
Worked solution
Readout
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