2016
DOI: 10.2495/cmem-v4-n4-393-402
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Particle laden flow investigations in special purpose dry-ice blasting applications

Abstract: A high speed camera investigation is presented into the behavior of CO 2 dry-ice particles in an application of dry-ice blasting to the defouling of commercial aircraft engine compressors. An image acquisition system is deployed in the compressor section of an aircraft engine and is used to determine the evolution of dry-ice particle size and velocity from the nozzle exit to the entrance to the engine's high pressure compressor as the engine is cranked. A comparison study between CO 2 dry-ice particle laden fl… Show more

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Cited by 4 publications
(6 citation statements)
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“…Dry-ice particles are sized and tracked with HSCs placed at specific positions in the HPC. The procedure and the experimental set-up of the HSCs and the lighting system are described in detail in Rudek et al (2016). Two positions are accessed and these are the IGV row of the HPC (HSC-I) and a position behind the OGV row of the HPC (HSC-O).…”
Section: Experimental and Numerical Strategy Experimentsmentioning
confidence: 99%
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“…Dry-ice particles are sized and tracked with HSCs placed at specific positions in the HPC. The procedure and the experimental set-up of the HSCs and the lighting system are described in detail in Rudek et al (2016). Two positions are accessed and these are the IGV row of the HPC (HSC-I) and a position behind the OGV row of the HPC (HSC-O).…”
Section: Experimental and Numerical Strategy Experimentsmentioning
confidence: 99%
“…It is possible to apply artificial PTFE fouling in large-scale experiments and this data is used to compare the numerical to experimental results in this study. The blades are photographed before and after defouling tests outside the engine in a controlled lighting environment and post-processing of these photographs is carried out with a before-after comparison procedure, comparable to that described in detail in Rudek et al (2016). This procedure provides the desired defouling statistics.…”
Section: Experimental and Numerical Strategy Experimentsmentioning
confidence: 99%
“…[29][30][31]) that fouling must be the only factor which causes these coefficient of restitution differences, and since CO 2 dry-ice particles tend to disintegrate on impact (see for example Ref. [6]) the required data for eqn. (3) must be obtained using a reference particle material (superscript ref), which does not plastically deform in the given range of Stokes numbers.…”
Section: Theoretical Formulationmentioning
confidence: 99%
“…Particle size and velocity is measured by means of a high-speed camera (HSC) (f) before and after impact. The data is processed using Matlab post-processors developed by the authors [6]. For fouled targets, the indentation is measured by a before-after comparison of impact area photographs.…”
Section: Basic Experimentsmentioning
confidence: 99%
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