Optical measurement of ice crystal icing on a NACA 0018 airfoil

Connolly, Jonathan; McGilvray, Matthew; Gillespie, David R. H.

doi:10.2514/6.2022-3699

Cited by 3 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the predictions show some discrepancies, with an approximate 30-40% under-prediction of total accretion area compared with the measured profile. This discrepancy could be partially explained by the experimentally measured profile in the the stator vane cases being determined by the edge detection of two-dimensional accretion images taken looking across the span of the vane, and this may represent a local maximum in the accretion profile driven by 3D flow features which are not modelled in the fluid domain [39,40].…”

Section: B the Effect Of Operating Conditions On Accretionmentioning

confidence: 99%

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

Yang,

McGilvray,

Gillespie

2023

AIAA Journal

View full text Add to dashboard Cite

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.

show abstract

Section: B the Effect Of Operating Conditions On Accretionmentioning

confidence: 99%

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

Yang,

McGilvray,

Gillespie

2023

AIAA Journal

View full text Add to dashboard Cite

show abstract

“…Therefore, the average thickness of the accretion represents the relevant dimension for these calculations. For this purpose, stereoscopy is utilized to measure the ice layer profile analogous to the work of Connolly et al [25].…”

Section: Stereoscopymentioning

confidence: 99%

Ice Accretion Compositions in Ice Crystal Icing

Köbschall,

Malik,

Bansmer

et al. 2023

Preprint

View full text Add to dashboard Cite

Transient Three-Dimensional Measurement of Ice Crystal Accretion Using a Plenoptic Camera

Eberhart,

Loehle,

Grigat

et al. 2024

AIAA Journal

View full text Add to dashboard Cite

Monitoring the three-dimensional formation of ice layers on airfoils during icing wind tunnel experiments is extremely challenging. For the first time, this paper demonstrates the use of a single plenoptic camera to perform transient, nonintrusive in situ measurements of ice crystal accretion. Experiments have been conducted in the Altitude Icing Wind Tunnel at the National Research Council of Canada under different icing conditions to assess the potential of the new technique. Using the camera in a close-up configuration, the results show the evolution of the three-dimensional shape of the accreted ice in high spatial and temporal resolution and in absolute metric units. The computed surface meshes allow for a detailed analysis in terms of ice shape, surface area, and ice volume. Posttest shapes are compared to measurements taken using a commercial laser scanner. Although not rated for ice surfaces, this device is used as a reference to compare the detailed surface structure after registering the data sets. The results of the two methods are in good agreement and show a mean relative deviation of the plenoptic camera of about 0.15 mm.

show abstract

Optical measurement of ice crystal icing on a NACA 0018 airfoil

Cited by 3 publications

References 19 publications

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

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

Ice Accretion Compositions in Ice Crystal Icing

Transient Three-Dimensional Measurement of Ice Crystal Accretion Using a Plenoptic Camera

Contact Info

Product

Resources

About