{"id":"https://openalex.org/W7225753412","doi":"https://doi.org/10.5281/zenodo.24111597","title":"The Thermoacoustic Engine Ceiling: Standing-Wave and Travelling-Wave Limits at a Common Working Point","display_name":"The Thermoacoustic Engine Ceiling: Standing-Wave and Travelling-Wave Limits at a Common Working Point","publication_year":2026,"publication_date":"2026-11-10","ids":{"openalex":"https://openalex.org/W7225753412","doi":"https://doi.org/10.5281/zenodo.24111597"},"language":"en","primary_location":{"id":"doi:10.5281/zenodo.24111597","doi":"https://doi.org/10.5281/zenodo.24111597","is_oa":true,"landing_page_url":"https://doi.org/10.5281/zenodo.24111597","pdf_url":null,"source":{"id":"https://openalex.org/S4306400562","display_name":"Zenodo (CERN European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.5281/zenodo.24111597","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5159396451","display_name":"William Alexander Aldred","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Aldred, William Alexander","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0009-0000-1215-577X","affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5159396451"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12139","display_name":"Advanced Thermodynamic Systems and Engines","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12139","display_name":"Advanced Thermodynamic Systems and Engines","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10440","display_name":"Advanced Thermoelectric Materials and Devices","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10553","display_name":"Combustion and flame dynamics","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[],"concepts":[{"id":"https://openalex.org/C137820387","wikidata":"https://www.wikidata.org/wiki/Q909337","display_name":"Thermoacoustics","level":2,"score":0.7705000042915344},{"id":"https://openalex.org/C54651841","wikidata":"https://www.wikidata.org/wiki/Q1437170","display_name":"Thermoacoustic heat engine","level":3,"score":0.7512999773025513},{"id":"https://openalex.org/C63257944","wikidata":"https://www.wikidata.org/wiki/Q1435974","display_name":"Regenerative heat exchanger","level":3,"score":0.5906000137329102},{"id":"https://openalex.org/C2779301550","wikidata":"https://www.wikidata.org/wiki/Q217236","display_name":"Working fluid","level":2,"score":0.552299976348877},{"id":"https://openalex.org/C50406533","wikidata":"https://www.wikidata.org/wiki/Q1452104","display_name":"Thermal efficiency","level":3,"score":0.5055000185966492},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.4542999863624573},{"id":"https://openalex.org/C119104473","wikidata":"https://www.wikidata.org/wiki/Q188910","display_name":"Carnot cycle","level":2,"score":0.45159998536109924},{"id":"https://openalex.org/C9395851","wikidata":"https://www.wikidata.org/wiki/Q177929","display_name":"Stack (abstract data type)","level":2,"score":0.429500013589859},{"id":"https://openalex.org/C116615679","wikidata":"https://www.wikidata.org/wiki/Q6795908","display_name":"Maximum power principle","level":3,"score":0.39879998564720154},{"id":"https://openalex.org/C2777489069","wikidata":"https://www.wikidata.org/wiki/Q1589822","display_name":"Ceiling (cloud)","level":2,"score":0.39879998564720154},{"id":"https://openalex.org/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","level":1,"score":0.39410001039505005},{"id":"https://openalex.org/C57198161","wikidata":"https://www.wikidata.org/wiki/Q178185","display_name":"Heat engine","level":2,"score":0.382099986076355},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3804999887943268},{"id":"https://openalex.org/C27134321","wikidata":"https://www.wikidata.org/wiki/Q186212","display_name":"Stirling engine","level":2,"score":0.373199999332428},{"id":"https://openalex.org/C172100665","wikidata":"https://www.wikidata.org/wiki/Q7465774","display_name":"Thermal conduction","level":2,"score":0.3659000098705292},{"id":"https://openalex.org/C114088122","wikidata":"https://www.wikidata.org/wiki/Q1261069","display_name":"Pressure drop","level":2,"score":0.36480000615119934},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.36149999499320984},{"id":"https://openalex.org/C83104080","wikidata":"https://www.wikidata.org/wiki/Q3809680","display_name":"Combustor","level":3,"score":0.3605000078678131},{"id":"https://openalex.org/C204530211","wikidata":"https://www.wikidata.org/wiki/Q752823","display_name":"Thermal","level":2,"score":0.35190001130104065},{"id":"https://openalex.org/C159188206","wikidata":"https://www.wikidata.org/wiki/Q1478382","display_name":"Heat flux","level":3,"score":0.3483000099658966},{"id":"https://openalex.org/C118993495","wikidata":"https://www.wikidata.org/wiki/Q5042828","display_name":"Electrical efficiency","level":3,"score":0.3450999855995178},{"id":"https://openalex.org/C40336117","wikidata":"https://www.wikidata.org/wiki/Q7204575","display_name":"Plenum space","level":2,"score":0.335999995470047},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.3294000029563904},{"id":"https://openalex.org/C6899612","wikidata":"https://www.wikidata.org/wiki/Q852911","display_name":"Resistive touchscreen","level":2,"score":0.32899999618530273},{"id":"https://openalex.org/C21881925","wikidata":"https://www.wikidata.org/wiki/Q3503313","display_name":"Power density","level":3,"score":0.32839998602867126},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.3188999891281128},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.3174000084400177},{"id":"https://openalex.org/C50517652","wikidata":"https://www.wikidata.org/wiki/Q179635","display_name":"Heat transfer","level":2,"score":0.31619998812675476},{"id":"https://openalex.org/C148837635","wikidata":"https://www.wikidata.org/wiki/Q1742397","display_name":"Sawtooth wave","level":2,"score":0.3005000054836273},{"id":"https://openalex.org/C67514181","wikidata":"https://www.wikidata.org/wiki/Q1588477","display_name":"Sound power","level":3,"score":0.2937000095844269},{"id":"https://openalex.org/C2164484","wikidata":"https://www.wikidata.org/wiki/Q5170150","display_name":"Core (optical fiber)","level":2,"score":0.2912999987602234},{"id":"https://openalex.org/C28719098","wikidata":"https://www.wikidata.org/wiki/Q44946","display_name":"Point (geometry)","level":2,"score":0.2856999933719635},{"id":"https://openalex.org/C2985831756","wikidata":"https://www.wikidata.org/wiki/Q107291880","display_name":"Maximum temperature","level":2,"score":0.2822999954223633},{"id":"https://openalex.org/C51321904","wikidata":"https://www.wikidata.org/wiki/Q191801","display_name":"Four-stroke engine","level":4,"score":0.27869999408721924},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.2734000086784363},{"id":"https://openalex.org/C188596812","wikidata":"https://www.wikidata.org/wiki/Q1003183","display_name":"Boiling point","level":2,"score":0.2621999979019165},{"id":"https://openalex.org/C186937647","wikidata":"https://www.wikidata.org/wiki/Q1796959","display_name":"Heat sink","level":2,"score":0.257099986076355},{"id":"https://openalex.org/C107706546","wikidata":"https://www.wikidata.org/wiki/Q189124","display_name":"Heat exchanger","level":2,"score":0.2526000142097473}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.5281/zenodo.24111597","doi":"https://doi.org/10.5281/zenodo.24111597","is_oa":true,"landing_page_url":"https://doi.org/10.5281/zenodo.24111597","pdf_url":null,"source":{"id":"https://openalex.org/S4306400562","display_name":"Zenodo (CERN European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"},{"id":"doi:10.5281/zenodo.24111598","doi":"https://doi.org/10.5281/zenodo.24111598","is_oa":true,"landing_page_url":"https://doi.org/10.5281/zenodo.24111598","pdf_url":null,"source":{"id":"https://openalex.org/S4306400562","display_name":"Zenodo (CERN European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"doi:10.5281/zenodo.24111597","doi":"https://doi.org/10.5281/zenodo.24111597","is_oa":true,"landing_page_url":"https://doi.org/10.5281/zenodo.24111597","pdf_url":null,"source":{"id":"https://openalex.org/S4306400562","display_name":"Zenodo (CERN European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"The":[0,65,74,102],"maximum":[1],"efficiency":[2,67,81,109],"and":[3,39,52,61,137,161],"power":[4,47],"density":[5],"of":[6,25,82,85,99,110,113,127,184],"two":[7],"thermoacoustic":[8],"engine":[9,77,105],"architectures":[10],"are":[11,144,164],"derived":[12],"at":[13,21,68],"a":[14,22,79,107,148],"single":[15],"common":[16],"working":[17,70],"point":[18,71],"-":[19,43],"helium":[20],"mean":[23],"pressure":[24],"3.0":[26],"MPa,":[27],"hot":[28],"temperature":[29,33],"873":[30],"K,":[31,35],"cold":[32],"323":[34],"frequency":[36],"400":[37],"Hz,":[38],"drive":[40],"ratio":[41],"0.05":[42],"from":[44,147],"the":[45,50,96,123,154,173,182,185],"acoustic":[46],"flux":[48],"in":[49,95,122,172],"core":[51,145],"three":[53],"retained":[54],"loss":[55],"terms:":[56],"viscous":[57,120],"dissipation,":[58],"axial":[59],"conduction,":[60],"imperfect":[62,92],"thermal":[63,93],"contact.":[64],"Carnot":[66],"this":[69],"is":[72],"0.630.":[73],"standing-wave":[75],"stack":[76,97],"reaches":[78,106],"ceiling":[80,108],"0.162":[83],"(25.7%":[84],"Carnot,":[86,114],"1.16":[87],"kW":[88,116],"net),":[89,117],"bound":[90,118],"by":[91,119,153,176],"contact":[94],"(51.8%":[98],"gross":[100,128],"production).":[101,129],"travelling-wave":[103],"regenerator":[104,124],"0.502":[111],"(79.6%":[112],"8.38":[115],"dissipation":[121],"pores":[125],"(11.9%":[126],"Axial":[130],"conduction":[131],"binds":[132],"neither":[133],"architecture":[134],"(42.5":[135],"W":[136,139],"33.0":[138],"against":[140],"kilowatt-scale":[141],"flows).":[142],"These":[143],"ceilings":[146],"reduced-order":[149],"Rott-Swift":[150],"model,":[151],"computed":[152],"deposited":[155],"Python":[156],"script;":[157],"resonator,":[158],"heat-exchanger,":[159],"streaming":[160],"load-extraction":[162],"losses":[163],"excluded.":[165],"SIMULATED,":[166],"NOT":[167],"MEASURED.":[168],"AI":[169,179],"use":[170],"disclosed":[171],"paper:":[174],"produced":[175],"Dave,":[177],"an":[178],"system,":[180],"under":[181],"direction":[183],"named":[186],"author.":[187]},"counts_by_year":[],"updated_date":"2026-11-11T12:16:26.678958","created_date":"2026-11-11T00:00:00"}