Turbo Machinery Dynamics Part 2 pdf

... relationships (Kerrebrock, 19 92) N t = N c , or (2. 21) W 2 = (1 + f )W 1 or (2. 22) W 1 c pc (T t7 − T t1 ) = W 2 c pt (T t2 − T t3 ) or (2. 23) f, T t2 , and T t7 are related by (2. 24) Turbine nozzles ... (W 1 /A 1 d 1 )√d 1 and T t2 /T t1 . (2. 25) p p fAA WA W A T T t t b t t 7 1 12 222 2 11 11 2 1 (1 )( ) ( = +         / / πθδ θ δ hf cT T T T T pt t t t t1 2 1...

Ngày tải lên: 11/08/2014, 06:21

... is A 2 = 25 /(3 .25 6 × 170) = 0.04516 m 2 . Since mean blade radius r m is 0.18 12 m, blade height at exit h is h = 0.04516/ (2 π r m ) = 0.0397 m T pp TT p 2 2 20 220 2 (1) 3.5 22 2 3 475.6 170 (2 1.01 ... FEM Mistuned ROM Tuned FEM 20 00 20 50 21 00 21 50 22 00 22 50 23 00 23 50 Excitation frequency (Hz) FIGURE 6.61 Free vibration modes of tuned rotor (Bladh et al.,...

Ngày tải lên: 11/08/2014, 06:21

... (10 6 lb/in 2 ) – 1 1. 625 2. 25 4. 125 28 .0 0.3 2 2 .25 2. 625 4. 125 27 .5 0.3 3 2. 625 3 .25 3.99 27 .0 0.3 4 3 .25 3.98 3. 42 26.5 0.3 5 3.98 4.78 2. 5 625 26 .0 0.3 6 4.78 5.75 1.98 25 .5 0.3 7 5.75 6. 625 1. 62 25.0 ... (lb/in 2 ) 1 −1559 323 4 0 100 12 40000 28 429 2 −1177 3788 10351 115 92 28530 25 6 72 3 23 64 11108 13 524 123 31 26 2 52 225 69 4 −3398 24...

Ngày tải lên: 11/08/2014, 06:21

... Mistuning / 20 2 6.18. Stresses in Dovetail / 20 6 6.19. Example Problems / 21 0 References / 21 9 Bibliography / 22 1 Chapter 7. Impeller and Bladed Disk 22 3 7.1. Introduction / 22 3 7 .2. Impeller ... requires c p T t = c p T + u 2 /2 (2. 1) 20 APPLICATIONS FIGURE 2. 2 Pratt & Whitney’s 20 00 series high bypass turbofan engine. FIGURE 2. 3 Pratt & Whitney’s series 20...

Ngày tải lên: 11/08/2014, 06:21

... (MW) Fogging 71 8793 160.5 53.6 7.0 20 7.1 Fog + chill 50 8639 176 .2 54.6 9 .2 221 .6 Chilling 50 8639 176 .2 54.6 9.4 22 1.4 No cooling 116 9560 127 .3 48.7 6.7 169.3 FIGURE 3 .27 Psychrometric chart with ... (Chmielewski et al., 20 02) . 30 32 35 40 45 50 55 60 65 70 75 80 85 25 0 15 20 25 30 35 40 45 50 55 0 .20 0 .25 0.30 Sensible heat ratio = Qx−QI Sensible heat ratio = Qx−...

Ngày tải lên: 11/08/2014, 06:21

... blade fouling (Caguiat, 20 02) . FIGURE 4.4 Compressor performance degradation due to blade fouling (Caguiat, 20 02) . DIESEL AND AUTOMOTIVE ENGINE TURBOCHARGERS 129 FIGURE 5.10 Turbocharger (Heisler, ... Paper # 1999-GT -21 0, New York, 1999. Yee, R., Myers, L., Braccio, K., and Dvornak, M., “Enhanced TF40B gas turbine engine development program,” ASME Paper # GT -20 02- 3 026 4, New York...

Ngày tải lên: 11/08/2014, 06:21

... prominent and audible signal is at 1. 424 kHz. Also, four of the frequencies (1 022 , 123 4, 1 424 , and 1 622 Hz) coincide with the fifth, sixth, seventh, and eighth orders of 20 4 Hz. A Mach number based on ... power 1.0 0.80 0.78 0.76 0.74 0. 72 0.70 1.1 1 .2 1.3 1.4 1.5 1.6 1.7 1.8 Frequency (kHz) Flow coefficient 1. 022 kHz 1.176 kHz 1 .23 4 kHz 1. 424 kHz 1.570 kHz 1. 622 kHz ∇(ru m...

Ngày tải lên: 11/08/2014, 06:21

... by (7.16) σσ νρω rt o r == +()3 8 2 2 σ νρω r oi oi rr rr r r = + +− −       ()3 8 2 2 22 2 22 σ νρω ν ν toi oi rr rr r r= + ++ − + +       () ( ) () 3 4 13 3 2 2 22 2 22 σ ν νν νν ρω r E C C r E r = − ++− ... − +−       () ()() ()( ) 1 11 31 8 2 1 2 2 2 22 σ ν νν νν ρω t E C C r E r= − +−− − +−       () ()() ()() 1 11 13 1 8 2 1 2 2 2 22 IMPE...

Ngày tải lên: 11/08/2014, 06:21

... = σ 1 − ν ( σ 2 + σ 3 ) = 12. 0 − 0.3 × 5 = 10.5 kpsi The total strain energy (Beltrami) theory gives s 2 = σ 1 2 + σ 2 2 + σ 3 2 − 2 ν ( σ 1 σ 2 + σ 2 σ 3 + σ 3 σ 1 ) = 12 2 + 5 2 + 0 − 2 × 0.3 × ( 12 × ... s 2 /2E, and this leads to the relationship σ 1 2 + σ 2 2 + σ 3 2 − 2 ν ( σ 1 σ 2 + σ 2 σ 3 + σ 3 σ 1 ) = s 2 The Mises-Hencky theory is based on the...

Ngày tải lên: 11/08/2014, 06:21

... Journal of Heat Transfer 26 5 26 6, 1973. TT ww 12 1 320 1303== K and K −×−×+ =−× ××+ ×− = × − 0 003066 26 28 7 2 321 164 25 000 2 0 920 10 26 003 937 466 25 000 1 25 12 8 2 4 21 .,,,, .,,, . TT T TT ... w RT RT CT KTT w w w ww 11 25 2 8 2 4 22 12 1 2 765 126 0 003066 2 0934 10 14 997 1003 922 719 25 000 =− × =××− =×− =×− − − ,. ., , ,( ) . W/m W/m W/m 2...

Ngày tải lên: 11/08/2014, 06:21