At the present time, Stepanoffâs design methodology based on empiricism using an experimental database is still widely used in pump design.
This design is so popular because based on his experimental investigation of the correlations between many design parameters and pump performance he âstrongly suggestedâ that the optimum blade exit angle was 2β = 22.5 degrees. It is true that designers using Stepanoffâs method can design pumps that demonstrate moderate performance with very cheap design costs.
These facts along with a rich experimental database make this method attractive as a standard design methodology. However, it is also true that Stepanoffâs method can not be applied to breakthrough designs beyond the design range he originally tested.
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