A comparative study of turbulent velocity fields in an internal combustion engine with shrouded valve and flat/bowl piston configurations
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, cilt.221, sa.12, ss.1597-1607, 2007 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 221 Sayı: 12
- Basım Tarihi: 2007
- Doi Numarası: 10.1243/09544062jmes762
- Dergi Adı: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1597-1607
- Anahtar Kelimeler: Bowl piston, Internal combustion engine, Proper orthogonal decomposition method, Turbulence
- İstanbul Gelişim Üniversitesi Adresli: Hayır
Özet
In the current study, the phase averaging and the proper orthogonal decomposition (POD) methods are used to decompose experimentally measured turbulent velocity fields in an internal combustion engine. Radial and circumferential turbulent velocity fields were measured using hot wire anemometer under motoring conditions for both flat and bowl piston configurations. Decomposed results of the phase average and POD methods are compared with each other. The effects of piston configuration on the engine performance have been discussed. Also, obtained organized and turbulence motions and their energy spectra are examined. Finally, coherent structures of velocity fields and their activities are investigated. © IMechE 2007.