Bleed Valve Rate Requirements Evaluation in Rotating Stall Control on Axial Compressors

Yeung, S.; Wang, Yong; Murray, Richard M.

doi:10.2514/2.5667

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…Three different levels of modeling are used to evaluate the potential effect of nonideal injection and feedback dynamics on the performance of the closed-loop system. The first configuration has idealized injectors described by (6) but without feedback dynamics, that is, feedback is done directly on (14). This is similar to the configuration used in the study by Hendricks and Gysling [9].…”

Section: Theoretical Stall Predictionsmentioning

confidence: 99%

“…Actively controlled discrete midspan pulsed injection with only three injectors has been carried out by D'Andrea et al [13] on a small single stage compressor to remove the hysteresis in the compressor pressure rise characteristics (speedlines) that is usually associated with rotating stall. Although other recent studies have been exploring active control with other actuation schemes, such as bleed valves (Yeung et al [14]), magnetic bearings for tip clearance control (Spakovszky et al [15]), and dynamic adjustment of stator stagger angle (Schobeiri and Attia [16]), another extensive comparative theoretical study by Fréchette et al [17] of different actuation schemes again point to jet injection as the most promising for rotating stall control. However, no attempt has yet been done to experimentally verify the concept of active control using full-span circumferentially continuous (distributed) jet injection, as proposed by Hendricks and Gysling [9].…”

Section: Introductionmentioning

confidence: 99%

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Active Suppression of Rotating Stall Inception with Distributed Jet Actuation

2007

International Journal of Rotating Machinery

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An analytical and experimental investigation of the effectiveness of full-span distributed jet actuation for active suppression of long length-scale rotating stall inception is carried out. Detailed modeling and experimental verification highlight the important effects of mass addition, discrete injectors, and feedback dynamics, which may be overlooked in preliminary theoretical studies of active control with jet injection. A model of the compression system incorporating nonideal injection and feedback dynamics is verified with forced response measurements to predict the right trends in the movement of the critical pole associated with the stall precursor. Active control experiments with proportional feedback control show that the predicted stall precursors are suppressed to give a 5.5% range extension in compressor flow coefficient. In addition, results suggest that the proposed model could be used to design a more sophisticated controller to further improve performance while reducing actuator bandwidth requirements.

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Section: Theoretical Stall Predictionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active Suppression of Rotating Stall Inception with Distributed Jet Actuation

2007

International Journal of Rotating Machinery

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“…A successful attempt to extend the stable flow range of an axial flow compressor was carried out by Day [18]. Adjustable stator blades [19], controllable inlet guide vanes [20], and downstream bleeding [21][22][23] were also investigated by a number of researchers. Spakovszky et al [24], Weigl et al [25], Koch and Smith [26], Lee and Greitzer [27], Suder et al [28], Stein et al [29], Hendricks and Gysling [30], and Buhr et al [31] studied the effect of steady and unsteady tip injection.…”

Section: Introductionmentioning

confidence: 99%

Parametric Study of Injection Angle Effects on Stability Enhancement of Transonic Axial Compressors

Khaleghi

Teixeira

Tousi

et al. 2008

Journal of Propulsion and Power

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An effective approach in suppressing stall is mass injection upstream of the tip of an axial flow compressor. Developing reliable injection systems for high pressure ratio compressors requires an understanding of the effects of injection parameters, for example, injection angle, on the compressor stability and performance. This paper reports on a numerical investigation of injection angle on the operability of a high-speed compressor rotor. The injection port is set to be choked for all of the injection cases. Simulations indicate that injection angle has a significant impact on stability improvement. Maximum range extension is obtained when an injection yaw angle equal to 30 deg is applied. At this injection angle, the stalling mass flow coefficient was reduced by 17.4% by using an injected mass flow equivalent to 1.55% of the baseline annulus flow. Results also indicate that the best injection case creates an incidence angle of about 0 deg over the tip of the blade and adds the highest momentum in the relative frame of reference.Nomenclature A = area a = annulus adb = adiabatic amb = ambient DF = diffusion factor in = blade inlet j = jet out = blade outlet P 0 = total pressure rel = relative frame of reference T 0 = total temperature t = tip U, V = velocity x = axial component y = nondimensional wall distance = efficiency = tangential component = momentum = density = solidity = flow coefficient

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“…Another common control strategy, air bleeding, utilizes some bleed valves around the compressor casing. The effect of bleeding on the control of instabilities was studied by Eveker et al [27], Freeman et al [28], Yeung et al [29], and Niazi et al [17,30]. The reported amount of bleeding, effectively applied by the researchers, varies from 1 to 10 per cent based on the mean flowrate.…”

Section: Introductionmentioning

confidence: 99%

Stall inception in a transonic axial fan

Khaleghi

Boroomand

Tousi

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part A:

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The current paper reports a numerical investigation of stall inception in a transonic compressor rotor, NASA Rotor-67, by using the whole flow passages in the computations. Surface roughness is added to one of the blades in order to trigger rotating stall. During stall inception, the tip clearance vortex moved away from the suction surface of the roughened blade's upper neighbour, leading to vortex breakdown. The stall cell was found to propagate opposite the direction of the blade rotation at about 30 per cent of rotational speed. The effect of air bleeding on stabilizing the compressor is also studied in this work. The mean mass flowrate removed from the bleed valves was 1.2 per cent of the mainstream flowrate. This amount of bleeding was found to effectively suppress the stalling disturbances.

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Bleed Valve Rate Requirements Evaluation in Rotating Stall Control on Axial Compressors

Cited by 5 publications

References 11 publications

Active Suppression of Rotating Stall Inception with Distributed Jet Actuation

Active Suppression of Rotating Stall Inception with Distributed Jet Actuation

Parametric Study of Injection Angle Effects on Stability Enhancement of Transonic Axial Compressors

Stall inception in a transonic axial fan

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