impeller
Noun
Meaning
One who, or that which, impels.
Source: Webster's dictionarySynonyms
Show all synonymsAntonyms
Show all antonymsHypernyms
Related terms
Phrases with the word
Anagrams
Examples
A pump that has been operating under these conditions shows premature wear of the impeller vane tips and the pump housing.
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.
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 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.