Blar i NTNU Open på forfatter "Kwah, Yi Hao"
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The effect of hydrogen addition on the amplitude and harmonic response of azimuthal instabilities in a pressurized annular combustor
Indlekofer, Thomas; Ahn, Byeonguk; Kwah, Yi Hao; Wiseman, Samuel; Mazur, Marek; Dawson, James; Worth, Nicholas (Peer reviewed; Journal article, 2021)The present work introduces an annular combustion chamber operated at intermediate pressures. The combustor is operated with CH-H blends leading to a variety of azimuthal combustion instabilities. The influence of the ... -
The Effect of Methane–Ammonia and Methane–Hydrogen Blends on Ignition and Light-Around in an Annular Combustor
Kwah, Yi Hao; Wiseman, Samuel Michael; Dawson, James (Journal article; Peer reviewed, 2023)The use of hydrogen and ammonia in gas turbines, either alone or blended with natural gas, poses various technical challenges for combustion systems, including ignition. Depending on the fuel composition, the laminar flame ... -
Ignition and lean blowoff dynamics of turbulent flames in annular combustors
Kwah, Yi Hao (Doctoral theses at NTNU;2023:165, Doctoral thesis, 2023)This thesis aims to provide experimental insights on the transient phenomena of ignition light-around and lean blowoff dynamics of turbulent flames in annular combustors. Numerous ignition experiments have been performed ... -
Self-excited longitudinal and azimuthal modes in a pressurised annular combustor
Mazur, Marek; Kwah, Yi Hao; Indlekofer, Thomas; Dawson, James; Worth, Nicholas (Peer reviewed; Journal article, 2020)A new laboratory scale pressurised annular combustion experiment is introduced and used to generate selfexcited longitudinal and azimuthal instabilities. The experiments are operated at mean pressuresranging from approximately ...