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Keywords: surge
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Proceedings Papers

Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A001, June 13–17, 2022
Paper No: GT2022-77977
... Abstract In this paper, an unsteady tip leakage flow instability is identified and investigated for an axial compressor at near surge conditions. We describe the results of experimental verification of a new compressor developed by improving the blade geometry based on the criterion...
Proceedings Papers

Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT35A002, June 13–17, 2022
Paper No: GT2022-78684
... as it developed for lower mass flow rate operating points. aerodynamics CFD compressor stability URANS surge diffuser Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-78684 INVESTIGATION OF THE MAP...
Proceedings Papers

Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A034, June 13–17, 2022
Paper No: GT2022-82548
... Abstract Multi-stage axial-radial compressors are typical configurations of compression systems used in turboshaft engines. The aerodynamic instabilities encountered in this type of compressor are commonly identified as surge, which seriously threaten the operability and reliability...
Proceedings Papers

Proc. ASME. GT2022, Volume 4: Cycle Innovations; Cycle Innovations: Energy Storage, V004T06A016, June 13–17, 2022
Paper No: GT2022-81731
... Abstract Dynamic compressors operating region is mainly constrained by fluid-dynamic instabilities occurring at low mass flow rate conditions, such as surge and rotating stall. This work presents a vibro-acoustic experimental investigation on a centrifugal compressor of an automotive...
Proceedings Papers

Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A027, June 13–17, 2022
Paper No: GT2022-83018
... at constant flow conditions and signals gathered during continuous closure of the throttling valve - on the way to the surge. Study confirmed that the microphone noise measurement allows to distinguish the main unstable flow phenomena. It could be potentially used as an initial test of flow stability...
Proceedings Papers

Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A023, June 13–17, 2022
Paper No: GT2022-82686
... Abstract In the first part of the paper, surge signatures and the underlying mechanisms thereof for a high-speed centrifugal compressor were investigated using signals from fast-response transducers installed along the flow path. The compressor surge signature is observed to vary...
Proceedings Papers

Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A008, June 13–17, 2022
Paper No: GT2022-80383
... Abstract Deep surge is a time and system dependent phenomenon that might be triggered by a flow instability. This instability could be subsequently used as an indicator for the surge margin. Based on former numerical investigations concerning steady flow phenomena in a centrifugal compressor...
Proceedings Papers

Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A010, June 13–17, 2022
Paper No: GT2022-81270
... Abstract In centrifugal compressors, it is common to observe a rapid reduction in surge margin towards high rotational speed, which shows a non-linear surge characteristic against the change of rotational speed. This paper presents a comprehensive experimental and numerical study to understand...
Proceedings Papers

Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A022, June 13–17, 2022
Paper No: GT2022-82682
... Abstract The identification of stall inception mechanisms and stability-limiting components in a centrifugal compressor is required for development of effective surge suppression approaches. Part 1 of this two-part paper investigates the surge signature of a centrifugal compressor at subsonic...
Proceedings Papers

Proc. ASME. GT2021, Volume 4: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage; Education; Electric Power, V004T06A014, June 7–11, 2021
Paper No: GT2021-59501
... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-59501 INCIPIENT SURGE ANALYSIS IN TIME AND FREQUENCY DOMAIN FOR CENTRIFUGAL COMPRESSORS Paolo Silvestri, Silvia Marelli, Massimo Capobianco Università degli Studi...
Proceedings Papers

Proc. ASME. GT2021, Volume 2A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V02AT31A020, June 7–11, 2021
Paper No: GT2021-58828
...-to-Gas (P2G) to compensate for the volatility of renewable energy sources, demand e cient gas tur- Keywords: Stall, Surge, Axial, Transonic, Compressor, Test Rig bines that quickly adapt to changing load requirements. The compressor as a crucial component is especially a ected by this NOMENCLATURE need...
Topics: Compressors
Proceedings Papers

Proc. ASME. GT2021, Volume 2A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V02AT31A028, June 7–11, 2021
Paper No: GT2021-59186
... & Safran Tech, Modelling & Safran Aero Boosters Simulation Simulation Herstal (Milmort), David.vanpouille@safrangroup.com Châteaufort, France Belgium Châteaufort, France ABSTRACT inversion of the flow in the entire engine, damaging several Surge margin is critical for the safety of aeronautical components...
Proceedings Papers

Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T06A009, September 21–25, 2020
Paper No: GT2020-14795
... are related to rotating stall and surge operations. This analysis was carried out to extend the knowledge about these risk conditions: the systems equipped with large volume size connected to the machine present critical issues related to surge and stall prevention, especially during transient operations...
Proceedings Papers

Proc. ASME. GT2020, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V008T20A017, September 21–25, 2020
Paper No: GT2020-15174
...Abstract Abstract Flow instabilities in centrifugal compressors are one of the most limiting factors to the performance of the system where the compressor is installed (i.e., internal combustion engines, fuel cell, etc.). A better understanding of the surge phenomenon allows to properly set-up...
Proceedings Papers

Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A044, September 21–25, 2020
Paper No: GT2020-15803
...Abstract Abstract In this paper the flow recirculation regions during the full surge cycle were described. It is a known fact that the surge cycle consists of two periods: backflow and recovery. The aim of this paper is to add spatial dimension to this analysis. Therefore, the main target...
Proceedings Papers

Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET39A006, September 21–25, 2020
Paper No: GT2020-14149
... outlet guide vanes. The methodology for calculating the performance is detailed, including the consideration of humidity in order to minimize errors related in particular to operating atmospheric conditions. The shift of the surge line towards lower mass flow rate as the IGV stagger angle increases...
Proceedings Papers

Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET41A006, September 21–25, 2020
Paper No: GT2020-14247
... to deep surge and introduces a new approach to identify these disturbances using nonlinear feature extraction algorithms including: phase-reconstruction of time-series signals and evaluation of a parameter called approximate entropy. To the best of the authors’ knowledge, this is the first time...
Proceedings Papers

Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET41A032, September 21–25, 2020
Paper No: GT2020-15699
... measures of change in variability could serve as a valuable indicator of instabilities. centrifugal compressor instabilities detection cyclostationarity surge CYCLOSTATIONARY APPROACH FOR INSTABILITIES DETECTION AND CONDITION MONITORING OF CENTRIFUGAL COMPRESSOR Mateusz Stajuda1,2, David Garcia...
Proceedings Papers

Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET41A033, September 21–25, 2020
Paper No: GT2020-15717
...Abstract Abstract This paper presents tests of an anti-surge system based on pressure derivatives. The control algorithm was proven to work on different machines and with different unstable flow phenomena. Compressors are known to be affected by unstable flow conditions appearing at low mass...
Proceedings Papers

Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET41A009, September 21–25, 2020
Paper No: GT2020-14345
...FLOW PHYSICS DURING SURGE AND RECOVERY OF A MULTI-STAGE HIGH-SPEED COMPRESSOR Fanzhou Zhao Department of Mechanical Engineering Imperial College London London, SW7 2AZ, UK fanzhou.zhao11@imperial.ac.uk John Dodds Rolls-Royce plc PO Box 31 Derby, DE24 8BJ, UK john.dodds@rolls-royce.com Mehdi...