{"id":{"repo_id":"uwo","oai_identifier":"oai:uwo.scholaris.ca:20.500.14721/31562"},"canonical_url":"https://search.dev.ndltd.org/etd/uwo/oai:uwo.scholaris.ca:20.500.14721/31562","repository":{"repo_id":"uwo","name":"Western University","base_url":"https://uwo.scholaris.ca/server/oai/request"},"display":{"title":"Experimental study and characterization of bubble behaviors in the orifice-induced hydrodynamic cavitation","abstract":"Experimental studies were performed to characterize the development process of orifice-induced cavitation and transitional bubble behaviors. The transition from non-cavitation to fully developed cavitation was carefully studied. Cavitation bubble clouds were observed at orifice, indicating the inception of cavitation. The number of bubbles produced were dramatically increased while the averaged sizes of bubble reduced when cavitation was initiated. Both orifice opening ratio and perimeter can affect the cavitation developing process. A long orifice perimeter promotes the production of fine bubbles. The orifice plates with the smallest opening ratio generated a desired gas-liquid interfacial area at the lowest required pressure. An orifice plate with multiple orifices is recommended in the design of orifice-based cavitation reactor for production of high cavitation intensity.","abstract_html":"Experimental studies were performed to characterize the development process of orifice-induced cavitation and transitional bubble behaviors. The transition from non-cavitation to fully developed cavitation was carefully studied. Cavitation bubble clouds were observed at orifice, indicating the inception of cavitation. The number of bubbles produced were dramatically increased while the averaged sizes of bubble reduced when cavitation was initiated. Both orifice opening ratio and perimeter can affect the cavitation developing process. A long orifice perimeter promotes the production of fine bubbles. The orifice plates with the smallest opening ratio generated a desired gas-liquid interfacial area at the lowest required pressure. An orifice plate with multiple orifices is recommended in the design of orifice-based cavitation reactor for production of high cavitation intensity.","abstract_has_math":false,"creators":["Zheng, Haoxuan"],"institution":"The University of Western Ontario","degree_name":"M Sc","degree_level":null,"degree_discipline":"Chemical and Biochemical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Zheng, Ying","Zhu, Jingxu (Jesse)"],"committee_chairs":[],"committee_members":[],"year":2021,"date_issued":"2021-08-20","date_published":"2021-08-20","updated_at":"2026-07-27T21:55:56Z","subjects":["Hydrodynamic Cavitation","Cavitation Inception","Transition Regime","Cavitation Number","Orifice Plate","Bubble Breakup"],"languages":["en_ca"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14721/31562","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Zheng, Ying","Zhu, Jingxu (Jesse)"]},{"key":"dc:creator","label":"Author","values":["Zheng, Haoxuan"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-07-10T19:20:10Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-07-10T19:20:10Z"]},{"key":"dc:date.issued","label":"Date","values":["2021-08-20"]},{"key":"dc:publisher","label":"Institution","values":["The University of Western Ontario"]},{"key":"dc:type","label":"Dc Type","values":["thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemical and Biochemical Engineering"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M Sc"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Hydrodynamic Cavitation","Cavitation Inception","Transition Regime","Cavitation Number","Orifice Plate","Bubble Breakup"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_ca"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/20.500.14721/31562"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The thesis cover page in the PDF document includes references to Western University’s previous institutional repository platform, known as Scholarship@Western, and links to that platform (beginning with ir.lib.uwo.ca). In citing or referring to this thesis, use the DOI or handle from this page instead. Sample citation: Author name, \"Thesis title.\" (Year). Western University Open Repository. https://doi.org/10.71858/123456."]},{"key":"dc:description.abstract","label":"Abstract","values":["Experimental studies were performed to characterize the development process of orifice-induced cavitation and transitional bubble behaviors. The transition from non-cavitation to fully developed cavitation was carefully studied. Cavitation bubble clouds were observed at orifice, indicating the inception of cavitation. The number of bubbles produced were dramatically increased while the averaged sizes of bubble reduced when cavitation was initiated. Both orifice opening ratio and perimeter can affect the cavitation developing process. A long orifice perimeter promotes the production of fine bubbles. The orifice plates with the smallest opening ratio generated a desired gas-liquid interfacial area at the lowest required pressure. An orifice plate with multiple orifices is recommended in the design of orifice-based cavitation reactor for production of high cavitation intensity."]},{"key":"dc:title","label":"Title","values":["Experimental study and characterization of bubble behaviors in the orifice-induced hydrodynamic cavitation"]}]}],"canonical_facts":{"dc:contributor.advisor":["Zheng, Ying","Zhu, Jingxu (Jesse)"],"dc:creator":["Zheng, Haoxuan"],"dc:date.accessioned":["2025-07-10T19:20:10Z"],"dc:date.available":["2025-07-10T19:20:10Z"],"dc:date.issued":["2021-08-20"],"dc:description":["The thesis cover page in the PDF document includes references to Western University’s previous institutional repository platform, known as Scholarship@Western, and links to that platform (beginning with ir.lib.uwo.ca). In citing or referring to this thesis, use the DOI or handle from this page instead. Sample citation: Author name, \"Thesis title.\" (Year). Western University Open Repository. https://doi.org/10.71858/123456."],"dc:description.abstract":["Experimental studies were performed to characterize the development process of orifice-induced cavitation and transitional bubble behaviors. The transition from non-cavitation to fully developed cavitation was carefully studied. Cavitation bubble clouds were observed at orifice, indicating the inception of cavitation. The number of bubbles produced were dramatically increased while the averaged sizes of bubble reduced when cavitation was initiated. Both orifice opening ratio and perimeter can affect the cavitation developing process. A long orifice perimeter promotes the production of fine bubbles. The orifice plates with the smallest opening ratio generated a desired gas-liquid interfacial area at the lowest required pressure. An orifice plate with multiple orifices is recommended in the design of orifice-based cavitation reactor for production of high cavitation intensity."],"dc:identifier.uri":["https://hdl.handle.net/20.500.14721/31562"],"dc:language.iso":["en_ca"],"dc:publisher":["The University of Western Ontario"],"dc:subject":["Hydrodynamic Cavitation","Cavitation Inception","Transition Regime","Cavitation Number","Orifice Plate","Bubble Breakup"],"dc:title":["Experimental study and characterization of bubble behaviors in the orifice-induced hydrodynamic cavitation"],"dc:type":["thesis"],"thesis:degree_discipline":["Chemical and Biochemical Engineering"],"thesis:degree_name":["M Sc"]},"updated_at":"2026-07-27T21:55:56Z"}