{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,24]],"date-time":"2026-01-24T00:49:42Z","timestamp":1769215782159,"version":"3.49.0"},"reference-count":35,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2024,12,5]],"date-time":"2024-12-05T00:00:00Z","timestamp":1733356800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Recovery and Resilience Plan","award":["02\/C05- i01.02\/2022.PC644867037-00000013"],"award-info":[{"award-number":["02\/C05- i01.02\/2022.PC644867037-00000013"]}]},{"name":"Recovery and Resilience Plan","award":["UIDB\/00151\/2020"],"award-info":[{"award-number":["UIDB\/00151\/2020"]}]},{"name":"Recovery and Resilience Plan","award":["UIDP\/00151\/2020"],"award-info":[{"award-number":["UIDP\/00151\/2020"]}]},{"DOI":"10.13039\/501100001871","name":"Portuguese Foundation","doi-asserted-by":"publisher","award":["02\/C05- i01.02\/2022.PC644867037-00000013"],"award-info":[{"award-number":["02\/C05- i01.02\/2022.PC644867037-00000013"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Portuguese Foundation","doi-asserted-by":"publisher","award":["UIDB\/00151\/2020"],"award-info":[{"award-number":["UIDB\/00151\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Portuguese Foundation","doi-asserted-by":"publisher","award":["UIDP\/00151\/2020"],"award-info":[{"award-number":["UIDP\/00151\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Fluids"],"abstract":"<jats:p>In industrial mixing processes, impeller design, rotational speed, and mixing conditions play a crucial role in determining process efficiency, product quality, and energy consumption. Optimizing the performance of stirring systems for non-Newtonian fluids is essential for achieving better results. This study examines the hydrodynamic and thermal performance of stirring systems for viscoplastic fluids, utilizing close-clearance anchor impellers with chamfered angles of 22.5\u00b0, 45\u00b0, and 67.5\u00b0 in cylindrical, flat-bottom and unbaffled vessels. Through a comprehensive comparative analysis between standard and chamfered impeller designs, the study evaluates their efficacy in overcoming yield stress, enhancing flow dynamics, and improving thermal homogeneity. The effects of Reynolds number and yield stress on the hydrodynamic and thermal states are analyzed. The results indicate that the 67.5\u00b0 chamfered impeller significantly improves flow distribution and minimizes dead zones, particularly in critical areas between the anchor blades and vessel walls, where mixing stagnation typically occurs. It also enhances vertical mixing by promoting a broader shear spread along the vessel height and a more uniform temperature distribution. These insights contribute to the development of more efficient agitation systems, applicable across various industries handling complex fluids.<\/jats:p>","DOI":"10.3390\/fluids9120288","type":"journal-article","created":{"date-parts":[[2024,12,5]],"date-time":"2024-12-05T08:33:51Z","timestamp":1733387631000},"page":"288","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["A Chamfered Anchor Impeller Design for Enhanced Efficiency in Agitating Viscoplastic Fluids"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0261-5634","authenticated-orcid":false,"given":"Amine","family":"Benmoussa","sequence":"first","affiliation":[{"name":"Center for Mechanical and Aerospace Science and Technologies (C-MAST), University of Beira Interior, 6201-001 Covilh\u00e3, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7019-3766","authenticated-orcid":false,"given":"Jos\u00e9 C.","family":"P\u00e1scoa","sequence":"additional","affiliation":[{"name":"Center for Mechanical and Aerospace Science and Technologies (C-MAST), University of Beira Interior, 6201-001 Covilh\u00e3, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,5]]},"reference":[{"key":"ref_1","first-page":"1211","article-title":"CFD Investigation of the Mixing of Yield-Pseudoplastic Fluids with Anchor Impellers","volume":"32","author":"Prajapati","year":"2009","journal-title":"Chem. 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