Abstract: With the development of high
performance and high pressure ratio centrifugal compressor,
reference[1] pointed out that the elliptic type is an optimal
vane shape during higher pressure ratio. This paper presents a
profiling method of elliptic vane shape, in which a simple polar
equation with elliptic center as pole is established by adopting
the polar coordinates instead of Descartes coordinates. The
relationship between vane camber angle βs, βh
[2][3] and polar
angle ψ is directly derived to give the distribution of vane
camber angles βs, βh along the revolution surface of hub and
shroud. As an example, the author calculated a centrifugal
impeller with a diameter of 95mm just to show that this method
is simple and feasible.
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