0302

• Experimental — Snapshot2

02 10 202 302 40 502 60 702 802 902 Impeller21egrees2

0.502: 0.402: 0.302: 0.202: 0.102: O.OOi -0.102: —0.202: -0.302

I Experimental: - Snapshot2

02 10 202 302 402 502 602 702 802 902 Impeller21egrees2

FIGURE 10.19 Comparison of simulated and experimental results for pitched blade turbine (normalized radial velocity, Uradial /Utip). r/T = (a) 0.118; (b) 0.171; (c) 0.197. Traces; simulation results; • Schafer et al. (1998) data (from Ranade et al., 2001a).

Figs 10.22-10.24 respectively. Experimental results corresponding to these flow patterns are also shown in the respective figures. It can be seen that agreement between predicted and experimental results is satisfactory. Good agreement for the parallel flow, where there is almost no interaction between impeller streams, can be anticipated from the good agreement found in the single impeller case. For small impeller

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