Page 335 - Fluid Mechanics and Thermodynamics of Turbomachinery
P. 335
Index 317
Deflection of fluid Exducer 238
definition 68 Exercises on
nominal 69, 70 logarithmic spiral vanes 216
Design point efficiency (IFR) radial flow turbine 244
at nominal design point 242 et seq. turbine polytropic efficiency 39
Deviation of fluid 75 units 4
Diffusers 43 et seq.
analysis with a non-uniform flow 51 53
conical and annular 44 Fans:
design calculation 49 51 aerofoil lift coefficient 162 3, 164 5
effectiveness 46 blade element theory 162 et seq.
ideal pressure rise coefficient 46 centrifugal 200
maximum pressure recovery 49 ducted, axial-flow 160 et seq.
two-dimensional 44 First law of thermodynamics 23, 24
optimum diffusion rate 44 First power stage design 176 9
optimum efficiency 49 Flow coefficient 6
stall limits 48 Flow instabilities, control of 159 60
Diffusion: Fluid properties 5
in compressor blades 71 4 Force, definition of 3 4
in turbine blades 103 Forced vortex design 175 6
optimum rate 49, 137 8 Francis turbine 2, 279, 302, 303
Dimensional analysis 4 5 capacity of 281
Dimensional similarity 6 7 vertical shaft type 291, 294, 295
Dimensions 3
Free-vortex flow 171 et seq.
Direct problem 179 80
Drag 59 60, 126
Draft tube 290, 294, 301
General whirl distribution 176
Dynamically similar conditions 7
Geometric variables 6
Geometrical similarity 7
Grand Coulee large turbines 281
Efficiency definitions
compressor cascade 62 3
compressors and pumps 33, 34
definitions of 30 et seq. Head 4, 5
diffuser 45 coefficient 6
hydraulic turbine 30, 33 effective 286
isentropic 30 gross 286
maximum total-to-static 100, 112 4 loss in penstock 286
mechanical 31,33 Heat transfer sign convention 24
nozzle 41, 43 Helmholtz type resonance 157
overall 30 Hertz, unit of frequency 4
overall isentropic 38 Howell
polytropic or small stage 35 9 correlation method 74 9
total-to-static (turbine) 33 deviation rule 75 6
total-to-total (turbine) 32 3 Mach number effects 78 9
turbine 30 off-design performance 76 8
Energy transfer coefficient 6 tangent difference rule 75
Entropy 29 Hydraulic mean diameter 99
Equivalent diffusion ratio 74 Hydraulic turbines, Ch. 9
Euler’s equation of motion 26 Hydropower plant
Euler’s pump equation 28 features 277 8
Euler’s turbine equation 28 largest 281
