Blade peripheral speed at mean radius for Impeller I, U_(I). Volumetric Flow Rate, Q=25(m^(3))/(m)in; Working Fluid: Water at STP Impeller #I: omega _(I)=3,000rpm;, Impeller #II: omega _(II)=-3,000rpm Degree of Reaction: Impeller # I - R=0.50; Impeller # II: R= unknown Blade Tip Radius: 95mm; Blade Hub Radius: 37.5mm Assume flow is axial at BOTH

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Blade peripheral speed at mean radius for Impeller I,

U_(I)

. Volumetric Flow Rate,

Q=25(m^(3))/(m)in

; Working Fluid: Water at STP Impeller #I:

\omega _(I)=3,000rpm;,

Impeller #II:

\omega _(II)=-3,000rpm

Degree of Reaction: Impeller # I -

R=0.50

; Impeller # II:

R=

unknown Blade Tip Radius:

95mm;

Blade Hub Radius:

37.5mm

Assume flow is axial at BOTH Section 1 and at Section 4. Assume blade angles equal corresponding flow angles. Perform your calculations at the mean radius as defined in Peng (Pg. 45). SECTION # 1 At Section #1, determine: Absolute Velocity,

V_(1)

, and Relative Velocity,

W_(1)

. Draw the Vector diagram of velocity vectors at Section #1, to scale. Determine the blade angle,

\beta _(b1)

on Impeller I.

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