Hydrogen enrichment effects on combustion, emission, thermoacoustic behavior, and exergy performance of a swirl-stabilized annular combustor
International Journal of Hydrogen Energy, cilt.269, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 269
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.ijhydene.2026.157190
- Dergi Adı: International Journal of Hydrogen Energy
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Artic & Antarctic Regions, Chemical Abstracts Core, Chimica, Compendex, Environment Index, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: Exergy analysis, Hydrogen-kerosene blending, Thermal uniformity, Vane type radial flow swirler
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
This study numerically investigates the combined effects of hydrogen enrichment and swirl intensity on combustion, flow structure, thermoacoustic behavior, and irreversibility in an annular combustor with a radial swirler. Hydrogen–kerosene blends (0–100%) and vane angles of 30°, 45°, and 60° were analyzed using computational fluid dynamics (CFD) with a non-premixed combustion model. Hydrogen addition enhanced reaction rates, mixing, outlet temperature, and thrust, but also increased thermal gradients, pressure losses, and exergy destruction. The 45° vane angle provided the most stable and uniform temperature distribution, while 60° caused stronger swirl, higher losses, and poorer uniformity at high hydrogen levels. Thermoacoustic results showed that hydrogen alters acoustic energy distribution, with turbulence effects more significant at low swirl. Exergy analysis revealed increasing irreversibility with hydrogen addition, reducing overall efficiency despite minor gains at moderate ratios. Results highlight the need for optimized fuel–geometry interaction in hydrogen-fueled combustors.