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Partial melting time model verification of a levitated ice particle

Published on May 1, 2020in Cold Regions Science and Technology2.767
· DOI :10.1016/J.COLDREGIONS.2020.103013
Yiqiang Han6
Estimated H-index: 6
(Clemson University),
Shivuday Kala (Clemson University)+ 1 AuthorsJose Palacios12
Estimated H-index: 12
(PSU: Pennsylvania State University)
Abstract
Abstract Experimental and analytical results modeling partially melting ice particles are presented in this research paper. The partially melting behavior of ice particles is of interest in the context of aircraft engines, as glaciated ice crystals partially melt inside the engine to potentially refreeze. The multi-phase flow process is complex and requires experimentally verified modeling tools to predict ice crystal ice accretion. In this study, a total of 14 experimental test cases were conducted under a controlled environment. The partially melting state was quantified using a luminescence technique with the assistance of acoustic levitation of the droplets. Analytical modeling of the melting process was then conducted. The model includes important parameters such as ambient temperature, relative humidity, or saturated vapor density into consideration to predict the partial melting state of the glaciated water droplets subjected to convective heating. The proposed model is effective in capturing the general trend of the melting curves obtained from the experimental data. The predictions of overall melting time for the entire 14 cases were found to be accurate with 4% mean discrepancy between model and experimental data for ice particles greater than 400 μm.
  • References (18)
  • Citations (0)
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References18
Newest
#1Miguel Alvarez (PSU: Pennsylvania State University)
#2Richard E. Kreeger (Glenn Research Center)H-Index: 7
Last. Jose Palacios (PSU: Pennsylvania State University)H-Index: 12
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Abstract Operations in ice crystals conditions are a threat to commercial aviation. The ingestion of ice crystals can affect different aircraft probes but can also affect jet engines. As fully frozen ice crystals enter an engine, partial melting occurs on the low-pressure compressor region of the engine, and ice accretion could occur on warm surfaces due to the presence of water coupled with the cooling capacity of the unfrozen portion found on the particles. Understanding the fundamental fractu...
Source
#1Yiqiang Han (Clemson University)H-Index: 6
#2Jose Palacios (PSU: Pennsylvania State University)H-Index: 12
Source
#1Yiqiang Han (Clemson University)H-Index: 6
#2Jared Soltis (Naval Sea Systems Command)
Last. Jose Palacios (PSU: Pennsylvania State University)H-Index: 12
view all 3 authors...
Experimental testing and analytical modeling of ice impact and fragmentation at turbo fan engine inlet were conducted in this research. A rotor testing facility, Adverse Environment Rotor Test Stan...
Source
#1Tadas P. BartkusH-Index: 6
#2Peter M. Struk (Glenn Research Center)H-Index: 10
Last. Jen-Ching TsaoH-Index: 1
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• Air and water vapor are treated as ideal gases• Air is continually well mixed• No supersaturation• 1-D air and particle flow• Dilute system (no particle interaction)• Particles are spherical• Discrete particle size distribution (bins)• Uniform temperature within the particle• Supercoolingcan occur • Mixed phase particles are not spatially resolved• Phase change occurs at particle surface at particle temperature• Adiabatic tunnel walls• The flow of particles and air is a continuous stream• The ...
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#1Mio TanakaH-Index: 1
#2Morita KatuakiH-Index: 1
Last. Hirotaka SakaueH-Index: 14
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The icing process of supercooled water is investigated in a microscope to provide further 8 understandings in an icing process in a micro scale. One question of using dual-luminescent 9 imaging method is that the luminescent probes may aggregate in the icing process, which 10 causes the signal attenuation. We monitored the luminescent outputs during the icing 11 process in a microscopic scale. It was found that the luminescent signal did not show an 12 increase during the icing process; it was a...
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#1Thomas A. GriffinH-Index: 1
#2Dennis J. DickiH-Index: 2
Last. Paul J. LizanichH-Index: 2
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The NASA Glenn Research Center Propulsion Systems Lab (PSL) was recently upgraded to perform engine inlet ice crystal testing in an altitude environment. The system installed 10 spray bars in the inlet plenum for ice crystal generation using 222 spray nozzles. As an altitude test chamber, the PSL is capable of simulating icing events at altitude in a groundtest facility. The system was designed to operate at altitudes from 4,000 to 40,000 ft at Mach numbers up to 0.8M and inlet total temperature...
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#1Michael J. OliverH-Index: 1
The Propulsion Systems Laboratory (PSL) is an existing altitude simulation jet engine test facility located at NASA Glenn Research Center in Cleveland, OH. It was modified in 2012 with the integration of an ice crystal cloud generation system. This paper documents the inaugural ice crystal cloud test in PSL—the first ever full scale, high altitude ice crystal cloud turbofan engine test to be conducted in a ground based facility. The test article was a Lycoming ALF502-R5 high bypass turbofan engi...
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#1Thomas C. CurrieH-Index: 5
#2Dan FulekiH-Index: 9
Last. James D. MacLeodH-Index: 7
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This paper describes experiments performed in an altitude chamber at the National Research Council of Canada (NRC) as the first step towards developing altitude scaling laws and procedures that will possibly allow aero-engines to be certified for operation in ice crystal clouds at high altitude by testing in sea level facilities. The principal objective was to test the hypothesis that accretion within a compressor due to ice crystal ingestion occurs when the local ratio of freestream liquid wate...
28 CitationsSource
#1Joseph P. VeresH-Index: 8
The occurrence of ice accretion within commercial high bypass aircraft turbine engines has been reported under certain atmospheric conditions. Engine anomalies have taken place at high altitudes that have been attributed to ice crystal ingestion, partially melting, and ice accretion on the compression system components. The result was degraded engine performance, and one or more of the following: loss of thrust control (roll back), compressor surge or stall, and flameout of the combustor. As ice...
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