{"corpus_id":124563470,"paper_sha":"7c9a07922030e852a6f9758f08b970bc253004e5","doi":"10.1016/J.IJHEATFLUIDFLOW.2016.02.002","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":2325339626,"dblp_id":null,"acl_id":null,"title":"WAKE STRUCTURE OF A SINGLE VERTICAL AXIS WIND TURBINE","year":2016,"publication_date":"2016-10-01","venue":"Proceeding of Ninth International Symposium on Turbulence and Shear Flow Phenomena","journal":{"name":"Proceeding of Ninth International Symposium on Turbulence and Shear Flow Phenomena","pages":null,"volume":null},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Physics","Engineering","Environmental Science"],"reference_count":28,"citation_count":98,"influential_citation_count":4,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"Abstract The wake structure behind a vertical axis wind turbine (VAWT) is both measured in a wind tunnel using particle imaging velocimetry (PIV) and computed with large-eddy simulation (LES). Geometric and dynamic conditions are closely matched to typical applications of VAWTs (ReD ∼ 1.8 × 105). The experiments and computations were highly coordinated with continuous two-way feedback to produce the most insightful results. Good qualitative agreement is seen between the computational and experimental results. The dependence of the wake structure on the tip speed ratio, TSR, is investigated, showing higher asymmetry and larger vortices at the lower rotational speed, due to stronger dynamic stall phenomena. Instantaneous, ensemble-averaged and phase-averaged fields are discussed, as well as the dynamics of coherent structures in the rotor region and downstream wake.","claims":[{"public_id":"cl_74e12f66256d1a5929cc40863cc2e89b","status":"active","text":"Coherent structures exhibit distinct dynamics in the rotor region compared to the downstream wake.","confidence":0.75,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":2,"public_id":"4715169a40","public_label":"AK (4715169a40)","roles":["review"],"url":"https://sah.borca.ai/u/4715169a40"},{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["review"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_74e12f66256d1a5929cc40863cc2e89b"},{"public_id":"cl_7537773cab0b4df9d166992c2f4f837d","status":"active","text":"Large-eddy simulation of the wake behind a vertical axis wind turbine shows good qualitative agreement with particle imaging velocimetry measurements of the wake structure.","confidence":0.85,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":2,"public_id":"4715169a40","public_label":"AK (4715169a40)","roles":["review"],"url":"https://sah.borca.ai/u/4715169a40"},{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["review"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_7537773cab0b4df9d166992c2f4f837d"},{"public_id":"cl_b31d9e425a0c7c9e072c18427310ee51","status":"active","text":"Lower rotational speed (lower tip speed ratio) produces higher wake asymmetry and larger vortices, attributable to stronger dynamic stall.","confidence":0.85,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale 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