Multiphase Approach Toward Simulating Ice Crystal Ingestion in Jet Engines

Habashi, Wagdi G.; Nilamdeen, Shezad

doi:10.2514/1.b34059

Cited by 32 publications

(10 citation statements)

References 12 publications

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“…Здесьṁ r [kg/(m • s)] -скорость образования барьерного льда (runback ice),ṁ v -интенсивность испарения (vaporization), u ∞ -скорость невозмущенного потока, CE (collection efficiency) -доля частиц, столкнувшихся с обтекаемым телом (от величины потока массы кристаллов на его мидель). Эта терминология и обозначения приняты в теории обледенения [1][2][3][4][5][6][7][8].…”

Section: экспериментальные исследованияunclassified

“…Сравнительно недавно [5] была осознана опасность, связанная с наличием в высоких слоях атмосферы кристаллов льда в значительных количествах (до 20 g/m 3 ), приводящих к сбоям в работе авиационных турбореактивных двигателей и приемников воздушных давлений. К настоящему времени накоплена обширная библиография, посвященная исследованию отдельных аспектов этих явлений, например, [6][7][8]. В частности, в [8] экспериментально подтверждено, что аккреция кристаллов льда начинается, когда поверхностная температура обтекаемого тела уменьшается до температуры плавления льда.…”

Section: Introductionunclassified

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К Гидротермодинамике Обледенения Профиля В Воздушно-Кристаллическом Потоке

Кашеваров¹,

Левченко²,

Миллер³

et al. 2018

Журнал Технической Физики

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Создан экспериментально-теоретический комплекс для исследования физических процессов, сопровождающих взаимодействие потока воздуха, несущего кристаллы льда, с нагретой поверхностью обтекаемого тела. Найден эффективный коэффициент фазовых превращений (испарения и перехода-через плавление и отвердевание в жидкой пленке-в барьерный лед) массы кристаллов, бомбардирующих сухую или смоченную нагретую поверхность с учетом их частичного уноса обтекающим воздухом. Разработана физикоматематическая модель гидротермодинамики жидкой пленки, получены численные данные по ее толщине, скорости и температуре, дополняющие результаты экспериментов.

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Section: экспериментальные исследованияunclassified

Section: Introductionunclassified

К Гидротермодинамике Обледенения Профиля В Воздушно-Кристаллическом Потоке

Кашеваров¹,

Левченко²,

Миллер³

et al. 2018

Журнал Технической Физики

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“…In a numerical simulation, Wright et al [16] added the mass and energy terms related to ice crystals to the thermodynamic model of supercooled droplet icing and obtained the thermodynamic model of mixed phase icing. Nilamdeen and Habashi [17,18] developed a mixed phase icing model considering air, supercooled droplets, and ice crystals to simulate the icing growth. In the absence of experimental results, the effectiveness of the model was verified by using NACA0012 airfoil and cylinder.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Ice Crystal Supercooled Droplet Mixed Phase Icing Based on the Improved Messinger Model

Wang

Zhong

Liu

et al. 2023

International Journal of Aerospace Engineering

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The ice crystal supercooled droplet mixed phase icing problem is an important research direction in aircraft icing and has received more attention in recent years. The thermodynamic process of the water film after the ice crystals impact on the surface determines the final ice shape, which is an important part of the accurate prediction of aircraft icing. In this paper, a thermodynamic model of ice crystal supercooled droplet mixed phase icing is proposed based on the extended Messinger model, according to the results of flow field and particle trajectory calculations. In this model, the mass and energy conservation equations of ice crystals, supercooled droplets, and liquid water are considered. The equations take the process of ice crystal adhesion and erosion into account, and the solution method of the equations is given. Ice shapes are calculated under various ice crystal supercooled droplet mixed phase conditions and compared with experimental results to demonstrate the validity of the numerical method. The effects of ice crystal erosion rate, melting ratio, and adhesion coefficient on the calculation results are analyzed by a numerical method. The results show that the ice crystal erosion rate has little effect on the ice shape, while a larger melting ratio and adhesion coefficient lead to more ice accretion.

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“…Due to the threat, new certification requirements have been introduced by FAA in Amendment 34 of 14 CFR 33 and by EASA in Amendment 4 of CS-E and Amendment 16 of CS-25. Several ice crystal icing codes have been developed to support the design and certification of engines/aircrafts, including GlennICE from NASA [4], IGLOO2D from ONERA [5,6], FENSAP-ICE by Habashi et al [7], MooseMBIce extended by Norde et al [8,9], as well as ICICLE at Oxford [10,11]. Understanding the sticking and erosion behaviours of ice crystals is an important element to develop a mathematical model of the phenomenon to introduce in icing codes.…”

Section: Introductionmentioning

confidence: 99%

“…Lozowski et al [12] proposed a sticking model for ICI, where ice crystals were assumed to bounce off dry walls and stick to wet walls (or at least, freeze all the existing water on the surface). Nilamdeen et al [7] presented a proof-of-concept sticking model, which is a function of particle size, velocity and film thickness. The model assumed ice crystals to partially stick to walls in the glaze icing regime while it adopted an assumption for dry and wet walls similar to Lozowski et al [12].…”

Section: Introductionmentioning

confidence: 99%

Sticking–Erosion Model for Ice Crystal Icing Using Particle Size Distribution

Yang,

McGilvray,

Gillespie

2023

AIAA Journal

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Ice crystal icing has been identified as a threat to aviation safety, with hundred engine power loss events having been experienced since the 1990s. This has led to new type certification requirements for the industry to demonstrate safe operation in these environmental conditions. The sticking and erosion behaviors of ice crystals are critical factors in ice crystal icing. However, many existing sticking–erosion models are developed based on ice crystals using the mean particle diameter for experimental tests that have a broad distribution of size. This leads to biasing when a different distribution with the same mean particle diameter is considered. This paper develops a new sticking–erosion model that accounts for the particle size distribution seen in experimental data typical of glaciated icing conditions. The results of model are compared to experimental accretion data over a range of melt ratio, Mach number, test article geometry, and particle size distribution. The predicted accretion profiles agree reasonably with experiments. The mean difference of the ice tip thickness between predictions and experiments is approximately 2.8 mm, compared to the mean ice tip thickness of 12.0 mm. The plateau effect of melt ratio on accretion is adequately predicted. More severe accretion of the small- to medium-sized ice crystals is observed. The predicted net accretion efficiency of large particles ([Formula: see text]) is small and is shown to be negative due to the effect of erosion. This concurs with the experimental observation that the presence of large ice particles is critical to reducing the ice accretion rate.

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Multiphase Approach Toward Simulating Ice Crystal Ingestion in Jet Engines

Cited by 32 publications

References 12 publications

К Гидротермодинамике Обледенения Профиля В Воздушно-Кристаллическом Потоке

К Гидротермодинамике Обледенения Профиля В Воздушно-Кристаллическом Потоке

Numerical Simulation of Ice Crystal Supercooled Droplet Mixed Phase Icing Based on the Improved Messinger Model

Sticking–Erosion Model for Ice Crystal Icing Using Particle Size Distribution

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