Cavitation Margin
Vapour bubbles nucleate where the suction pressure trace dips under the vapour-pressure rule, drift downstream and collapse as it recovers, while the margin bar closes on its limit.
CSS
Fluidsys
15 animationsDarcy Percolation
Seepage threads run the pore throats of a packed bed while the two piezometer columns and the piezometric surface joining them rise and fall with the applied gradient.
CSSHydraulic Grade Line
The energy and hydraulic grade lines fall over a pipe run, stepping down at each fitting and steepening with the duty while a tracer dash runs the pipe beneath them.
CSSImpeller Triangle
A backward-curved centrifugal impeller turns one vane pitch per cycle while the exit velocity triangle at the vane tip rebuilds itself as the flow through it rises and falls.
CSSIsovel Contours
Concentric iso-velocity contours in a round pipe section march outward and bunch against the wall as the profile fills from laminar to turbulent, the shape-factor needle swinging with them.
CSSManifold Split
Flow entering a three-branch manifold redistributes as one branch throttles, the three share bands on the rail below trading width with no seam between them.
CSSMoody Chart
An operating point runs down the laminar line of a Moody chart, crosses the critical zone onto its relative-roughness curve and walks out to the fully rough plateau while the two axis ticks track it.
CSSOrifice Differential
Flow contracts through an orifice plate to a vena contracta and recovers downstream while the two limbs of the U-tube manometer trade height with the differential.
CSSParticle Velocimetry
A lattice of particle-image-velocimetry vectors swings through the full turn as a wave crossing the interrogation window, with the vortex core ring tracking across it.
CSSPump Duty Point
A pump head-capacity curve holds while the system resistance parabola steepens under throttling and the duty point slides back up the pump curve with the axis ticks following it.
CSSReynolds Transition
A dye filament injected into a glass tube runs as a straight thread at low flow and breaks into eddies downstream as the throttle opens, with the Reynolds marker sliding along its scale.
CSSRheogram
A parallel-plate shear cell leans its fluid filaments further over as the shear rate rises and the operating dot rides the shear-thinning curve on the rheogram beside it.
CSSTwo-Phase Regime
A horizontal two-phase line cycles through stratified, slug and annular flow while the marker walks across the regime map beneath it and a dash train runs the pipe.
CSSV-Notch Weir
The upstream surface rises and falls across a thin-plate V-notch while the staff gauge tracks the head and the discharge bar below follows its five-halves power law.
CSSWater Hammer
A pressure front leaves the closing valve and reflects between valve and reservoir while the surge bars above and below the pipe measure the length it has travelled and the recorder strip scrolls a full period.
CSS