Impeller

An impeller that has been operating under a suction cavitation condition can have large chunks of material removed from its face or very small bits of material removed, causing the impeller to look spongelike.

When poorly developed flow enters the pump impeller, it strikes the vanes and is unable to follow the impeller passage.

The low pressure fuel pump may have an impeller that could deform over time and affect the fuel pump housing.

To illustrate, if a factory near London experiences turbine issues requiring an impeller replacement, the typical process involves placing a request with the procurement warehouse.

But before that switch, one could order a T-Bird with an extra helping of horsepower thanks to a McCulloch/Paxton centrifugal supercharger, which boosts pressure using an impeller similar to that found in a turbo.

Instead of having a propeller outside the boat, which is a potential danger to people and wildlife in the water, a jet drive boat has its engine inside the hull which then powers an impeller that sucks water through an intake nozzle.

Powered exosuits in "The Forever War" by Joe Haldeman are now in active development by the military; the impeller drives of the Honor Harrington universe (effectively force fields) have seen a partial fulfillment in DARPA's Iron Curtain protection system.

A pump that has been operating under these conditions shows premature wear of the impeller vane tips and the pump housing.

Cavitation in pumps may occur in two different forms: Suction cavitation Suction cavitation occurs when the pump suction is under a low-pressure/high-vacuum condition where the liquid turns into a vapor at the eye of the pump impeller.

Consequently, one side of the double-suction impeller receives more flow at a higher flow velocity and pressure while the starved side receives a highly turbulent and potentially damaging flow.

Hooker 1984, p. 45. The function of the supercharger is to compress the fuel/air mixture entering the engine cylinders; any pressure loss to the impeller (also called the rotor) would impair the supercharger's efficiency.

It achieves this by forcing a simulation of impeller stall to occur continuously.

It is usually achieved through impeller design or by forcing the mixture through an annular opening that has a narrow entrance orifice with a much larger exit orifice.

On the next run, the bearings worked satisfactorily but the stresses were too great for the brazed impeller and it flew apart.

The fluid experiences both radial acceleration and lift and exits the impeller somewhere between 0 and 90 degrees from the axial direction.

The liquid then separates from the vanes causing mechanical problems due to cavitation, vibration and performance problems due to turbulence and poor filling of the impeller.

The older of the two designs, direct-fan cleaners have a large impeller (fan) mounted close to the suction opening, through which the dirt passes directly, before being blown into a bag.

The precise shape of water turbine blades is a function of the supply pressure of water, and the type of impeller selected.

There are two possible ways of measurement: a complete fan, or an impeller on a hydraulic installation.

The turbine and impeller wheel sizes also dictate the amount of air or exhaust that can flow through the system, and the relative efficiency at which they operate.