“mu are investigating the power and thrust generated from both the tip and a root section of the blade for a turbine
design in a 15 ma's upstream velocity Wu}. '|11e blade is 24 In long. Assume the axial induction factor is (13?. the
rotational speed is 1? rpm. and that the blade is being discretized into 2 n1 ldr} sections for this analysis. Analyaefirrboththerootand thetip section: Root section Tip section
Center of section: r I 5 m Center of section: r I23 rn Chord:c-4.5m Chord:c-‘lm IIIIIIIIIIII II IIIHHI II I
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I a! From the chart above. what mgle of attack would 1,.-ou design for and therefore. wl'rat are fire associated Cl EL Cu
1.Ialulss‘.ll [note the same answer is applicable to both the roctand the tip section}. [3 plsl b} Calculate the 1|.I'«eloclt'|1r ofthe blade at each of the locations as well as the relative whdty l3 ptsl:
c} Calculate the bladeflowmg'le and the optimal twist angle of the blade for each location [3 pts}: d} Calculate the lift and drag Forces for both elements [3 pts}:
e} Calculate the thrust and power produced tor both elements. [4 pt}: 1‘] llll'll'hat is the ratio otthe power at the tip to the power at the root element [and does this make sense}? [2 ptsl
g} What is the ratio of the thrust at the tip to the thrust at the root element {and does this make sense}? {,2 pts} h} BCIIH U5. how much energy! would 1,rou estimate this devioe to produce annually; in a 15.5 mr's annual average wind
speed location? Show your workfjustihr your answer [3 ptsl

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Status NEW Posted 08 Jul 2017 12:07 AM My Price 10.00

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