{"id":"W4412462485","doi":"10.1016/j.jaecs.2025.100344","title":"Detecting and characterizing thermoacoustic oscillations in an industrial combustor with the spectral proper orthogonal decomposition","year":2025,"lang":"en","type":"article","venue":"Applications in Energy and Combustion Science","topic":"Combustion and flame dynamics","field":"Engineering","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Calgary","funders":"Natural Sciences and Engineering Research Council of Canada; Alberta Innovates","keywords":"Combustor; Acoustics; Decomposition; Thermoacoustics; Proper orthogonal decomposition; Spectral analysis; Combustion; Physics; Mechanics; Chemistry","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0003275724,0.0002238509,0.000140081,0.0005123473,0.0001343036,0.0002535487,0.0002189029,0.0001993144,0.0002685097],"category_scores_gemma":[0.000590647,0.0001458798,0.0001365908,0.0003039548,0.0004611217,0.0004021983,0.00040794,0.0002152394,0.00004958561],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001379653,"about_ca_system_score_gemma":0.0001498311,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0003436055,"about_ca_topic_score_gemma":0.0005021215,"domain_scores_codex":[0.9998763,0.00002045965,0.000006608459,0.00002604691,0.00005828878,0.00001240266],"domain_scores_gemma":[0.999795,0.00009100501,0.00004534511,0.00002305008,0.00003154033,0.00001401073],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.0002186164,0.00003287766,0.003457685,0.00007437453,0.000007508811,0.00009292732,0.0001511164,0.004271613,0.9543909,0.001062766,0.00003340713,0.03620614],"study_design_scores_gemma":[0.00003234358,0.0004215591,0.01523107,0.00001482693,0.00002102446,0.0005415985,0.0001784293,0.2848442,0.6959621,0.001273037,0.001438849,0.00004096644],"study_design_candidate":"simulation_or_modeling","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.8726732,0.0002049737,0.1259977,0.00004435357,0.000009648004,0.00002010612,0.00003252102,0.0001055645,0.000911978],"genre_scores_gemma":[0.9062969,0.0001298861,0.0932032,0.00001144785,0.000005650866,0.0000177823,0.00002725814,0.00001152277,0.0002964927],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.0005123473,"threshold_uncertainty_score":0.001732409,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.009572085118681434,"score_gpt":0.2381189699914581,"score_spread":0.2285468848727767,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}