Turbo Machinery Dynamics Part 10 pptx

... expressions for journal bearings is given by (10. 7) E bw R c =     2 1 2 µαω BEARINGS AND SEALS 375 FIGURE 10. 2 Turbulence coefficient values. FIGURE 10. 3 Temperature and pressure profiles in ... pressure COMBUSTION SYSTEM 355 10. 3 JOURNAL BEARING TYPES Many different types of bearings are used to support a rotating shaft. Some representative types are shown in Fig. 10. 5. The pa...

Ngày tải lên: 11/08/2014, 06:21

... prohibitively expensive for large models. Methods based on nonlinear aerodynamics do not meet the immediate needs in turbomachinery design, where computationally efficient procedures for routine ... the tests. The design point speed is 100 0 rpm, mass flow is 25.35 kg/s, and Mach number at inlet midspan is 0.22. The instrumented row has 63 blades of 110- mm chord length at midspan and 116-mm...

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... IN 738 PM Ni 59.9 65.26 58.13 65.20 63.32 Cr 08.5 10. 11 11.95 11.00 15.40 Co 10. 0 07.52 13.00 09.75 08.95 Mo 00.6 00.45 00.42 00.30 01.23 W 10. 0 07.52 07.00 05.00 01.82 Ta 03.0 02.26 03.00 01.50 ... the surface for the coated sample is shown in Fig. 11.21. A large number of bright particles are noticed around 100 0 cycles, and may correspond to oxidation products of coarsened coating...

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... 370 Chapter 10. Bearings and Seals 371 10. 1. Introduction / 371 10. 2. Fluid Film Bearing / 373 10. 3. Journal Bearing Types / 377 10. 4. Dynamic Characteristics / 380 10. 5. Thrust Bearing / 385 10. 6. ... Bearing / 387 10. 7. Vapor Phase Lubrication / 392 10. 8. Deformation in Ball Bearing / 396 10. 9. Tip Clearance Actuation with Magnetic Bearings / 399 10. 10. Impact of Flexib...

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... Journal of Gas Turbines and Power 106 :552–560, 1984. Wilson, A. G., and Freeman, C., “Stall inception and development in an axial flow aero-engine,” ASME Journal of Turbo- Machinery 116:217–225, 1994. AIRCRAFT ... bird tolerant design All 3 stages of the rotor are blisks. Blades designed using 3D aerodynamics F 110- GE-129 current fan F 110- GE-132 blisk fan Closed coupled OGV/frame 3D d...

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... 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 85 0.40 0.35 1.30 1.25 1.20 1.15 1 .10 1.05 1.00 0.95 0.90 0.85 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0 .10 0.05 55 90 50 45 40 35 30 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Humidity ... 0.30 Sensible heat ratio...

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... performance degradation due to blade fouling (Caguiat, 2002). DIESEL AND AUTOMOTIVE ENGINE TURBOCHARGERS 129 FIGURE 5 .10 Turbocharger (Heisler, 1995). Compressor involute cover Air inlet Spindle Compressor sealing ... efficiency (Heisler, 1995). Turbocharging is a particular form of supercharging in which a compressor is driven by an exhaust gas turbine to pressurize the incoming air. Turbo...

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... Institute Lecture Series 1985–2005 on Tip Clearance Effects in Axial Turbo- machinery, 1985. BIBLIOGRAPHY Alford, J., “Protecting turbo- machinery from self-excited rotor whirl,” ASME Journal of Engineering Power ... 32/1.75 2 = 10. 45 kpsi and s alt = 17/1.75 2 = 5.55 kpsi. Thus, S m = n σ m = 10. 45n and S alt = n σ alt = 5.55n. Substitution into the nonlinear equation gives (5.55n/2...

Ngày tải lên: 11/08/2014, 06:21

... on the interface between the calculation domains. As an example, consider an impeller with 10 full and 10 splitter blades with a 30° backward lean at the exit, as shown in Fig. 7.8 (Hillewaert ... efficiency of the centrifugal stage. The parameters are measured at three constant speed points, 99, 100 , and 101 percent. The new radial stage gained 4 percent in efficiency over the base de...

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... hence secondary flow TURBINE BLADE AND VANE 289 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 040608020 z, mm 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 z, mm t, mm 040608020 t, mm Trailing ... on the pressure side of the bulb, T106/1 and T106/2 designs are nearly identical. A comparison of streamwise distribution of the vortices between T106 and T106/2 designs is...

Ngày tải lên: 11/08/2014, 06:21