NDLI: Influence of pressure on droplet splashing behaviour inside gas turbine compressors during wet compression

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Influence of pressure on droplet splashing behaviour inside gas turbine compressors during wet compression

Content Provider	Hyper Articles en Ligne (HAL)
Author	Günther, Christoph Bröder, Jascha Joos, Franz
Copyright Year	2017
Abstract	The injection of water sprays into the compressor inlet of gas turbines is used to augment power output and perform fast load changes. During wet compression, many drops enter the compressor and since droplets above a specific size cannot follow the flow of air, they are likely to collide with compressor blades and disintegrate. To apprehend the occurring splashing phenomena, impacts of single droplets on substrates with different surface roughness are studied under gas pressures from 100 to 500 kPa. For these disintegrations, the quantity of secondary droplets as well as their size and velocity distributions are measured using backlit high-speed video recordings. Analysis shows that the secondary droplet diameter distribution is dependent on surface roughness as well as pressure. Surface roughness increases the quantity of large secondary droplets, while the number of droplets with small diameters is unaltered. Increasing pressure increases the quantity of secondary droplets of all sizes. Both variations lead to significant increase in overall ejected volume of the primary drop. The evaluation of the influence of surface roughness and pressure on the secondary droplet velocity showed that there is a minor dependency on variations in both parameters.
Related Links	https://hal.science/hal-02376839/file/227.finalpaper.pdf
Conference Proceedings	17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC2017)
Language	English
Publisher	HAL CCSD
Access Restriction	Open
Subject Keyword	surface roughness splashing wet compression pressure
Content Type	Text
Resource Type	Conference Proceedings
Subject	Physics and Astronomy

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