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Radial turbine preliminary design and performance prediction

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Radial turbine preliminary design and performance prediction ( radial-turbine-preliminary-design-and-performance-prediction )

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TABLE 3. Comparison RTGD with RIFTUD RTGD RIFTUD Inlet Radius [m] Inlet Absolute Flow Angle [°] Inlet Relative Flow Angle [°] Number Blades Outlet Hub Radius [°] Outlet Shroud Radius [°] Outlet Blade Height [m] Outlet Absolute Flow Angle [°] Outlet Relative Flow Angle [°] Total to Static Efficiency Pressure Ratio Loading Coefficient 0.82 Flow Coefficient 0.34 Loss Discussion 0.0777 0.0777 72 71.92 -32.3 -31.5 12 12 0.0233 0.0194 0.0572 0.0554 0.034 0.036 0.00 0.00 -64.9 -54.9 0.83 0.82 1.63 1.61 RTGD deals with estimating the most significant losses that occur in the rotor. The diagram shows the six losses reported in the loss models paragraph. It can be observed that the loss that has the greatest effect on the rotor performance in both cases is passage loss. While, the windage and trailing edge losses are negligible. It has not been possible to carry out any type of comparison either for the T-100 turbine or for the Argon turbine, since the data relating to the losses are not available in both cases examined. Windage Loss Tip Clearance Loss Exit Energy Loss Trailing Edge Loss Passage Loss Incidence Loss 0 10 20 30 40 50 60 70 Argon T-100 Incidence Loss Passage Loss Trailing Edge Loss Exit Energy Loss Tip Clearance Loss Windage Loss Argon 8,98 46,58 0,003 35,91 8,53 0 T-100 4,59 63,47 0,002 17,55 14,38 0 FIGURE 4. Losses Contribution % 020097-8

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