Impact of Engine Icing on Jet Engine Compressor Flow Dynamics

Kundu, Reema; Prasad, J. V. R.; Tiwari, Prashant; Breeze-Stringfellow, Andrew; Szucs, P. N.; Nakano, Tsuguji; Pritchard, Byron

doi:10.2514/6.2012-3939

Cited by 3 publications

(1 citation statement)

References 16 publications

(13 reference statements)

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“…[4][5][6] However, ice shed inside the compressor from the accreted ice is believed to be a direct cause of engine instability. 7 Kundu et al 8 describes a computational methodology that combines the thermodynamic icing model with an one-dimensional quasi-linear numerical model simulating the flow through a multistage axial compressor. The paper analyzes the impact of ice shedding on the stage-wise behavior of the compressor.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Ice Shed in Multistage Compressor of Jet Engines

Kundu

Prasad

Singh

et al. 2014

6th AIAA Atmospheric and Space Environments Conference

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Simulation of ice shed into a multistage axial compressor involves a coupled two phase flow of a continuous phase comprising of air and water vapor and a discrete phase with ice crystals and water droplets. A first principles based discrete phase model is formulated to capture the heat and mass transfer processes of ice flow in air. A quasi one-dimensional model is used to represent the continuous phase. An exchange of information at every time step between the two models leads to a coupled response that alters characteristics like temperature and pressure distributions across the compressor. However, an understanding of the impact of various assumptions used for modeling of the icing physics is imperative in order to establish the fidelity of the developed icing model, before its use in gas turbine engine ice ingestion studies. This paper describes the assumptions and semi-numerical models used in the coupled discrete-continuous phase flow numerical models. The input characteristics of the discrete phase related to the size and distribution of ice crystals, the assumed percentage of ice particles escaping through compressor bleed ports, simplifications associated with ice and droplet breakup on impact with compressor blades, moisture content affecting the dry air properties, are some of the factors that are variables in the icing study. The impact of these factors on the compressor flow dynamics is estimated through a parametric analysis.

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Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Ice Shed in Multistage Compressor of Jet Engines

Kundu

Prasad

Singh

et al. 2014

6th AIAA Atmospheric and Space Environments Conference

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Detecting ice on plate-like structures via flow-induced random vibration: a dispersion curve shift identification approach

Qin,

Wang

2024

Structural Health Monitoring

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This paper proposes an ice detection framework for thin plate structures using flow-induced random guided waves measured by two passive sensors. Its principle is based on the fact that the ice accretion shifts the dispersion curve of guided wave, which can be extracted from the cross-correlation of ambient wave fields at two receivers. More specifically, the group velocity under various frequencies is identified from the prominent peak of the cross-correlation with a band-pass filter, which signifies the travel time of a narrow-band guided wave, and this forms a reconstruction of the dispersion curve. The ice thickness is then estimated by minimizing the weighted error between the reconstructed dispersion curve and its theoretical model solved from the Rayleigh–Lamb equations for the two-layer (ice-plate) structure. The weights are assigned to various frequencies according to the global sensitivity of the group velocity versus the ice accretion. The proposed method is assessed by a laboratory experiment where the ice accretion on an aluminum plate is carried out in an air-cooling environment and the random vibration is excited by spraying air jet onto the plate surface. Experimental results show that the ice thickness can be accurately estimated if it is of the same order or even lower than the plate thickness. The proposed method has the potential to realize the long-range real-time detection of aircraft icing conditions where the passive sensors can be tiny, light, free of energy supply, and mounted on the internal surface of fuselage skin without any effect on aircraft aerodynamics.

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Analysis of Stall Onset in a Multistage Axial Flow Compressor in Response to Engine Icing

Kundu¹,

Prasad²,

Saxena³

et al. 2014

50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference

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Propulsion system instabilities such as compressor surge and stall can arise due to ice ingested by an aircraft engine flying through high ice water content regions. Performance and operability are affected by ice ingestion into a gas turbine engine compression system. Since the 1980's ingestion of ice particles into engines have caused over one hundred engine power loss events. This paper presents an analysis of a multistage compressor system response to ice ingestion. Towards this, an aero-thermodynamic model of the discrete particles that captures mass and heat balances with air, is constructed. The computational methodology integrates it with a quasi-one-dimensional unsteady flow model with additional source terms from the discrete phase. From numerical simulations of the coupled continuous-discrete phase flow model, it is observed that a re-matching of the stages across the compressor occurs with increasing ice flow rates to accommodate loss of energy to the ice flow. The axial flow and pressure oscillations with increasing ice flow rates results in an eventual irretrievable unsteady compressor operating point excursion to stall side. The flow solver simulates the onset of a surge-stall event and identifies the stalling stage of the compressor. The numerical simulations correlate the magnitude of ice flow rates to pressure disturbances ultimately causing compressor instability.

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Impact of Engine Icing on Jet Engine Compressor Flow Dynamics

Cited by 3 publications

References 16 publications

Modeling and Analysis of Ice Shed in Multistage Compressor of Jet Engines

Modeling and Analysis of Ice Shed in Multistage Compressor of Jet Engines

Detecting ice on plate-like structures via flow-induced random vibration: a dispersion curve shift identification approach

Analysis of Stall Onset in a Multistage Axial Flow Compressor in Response to Engine Icing

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