{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T12:52:09Z","timestamp":1777639929270,"version":"3.51.4"},"reference-count":6,"publisher":"Hindawi Limited","license":[{"start":{"date-parts":[[2012,1,1]],"date-time":"2012-01-01T00:00:00Z","timestamp":1325376000000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["International Journal of Rotating Machinery"],"published-print":{"date-parts":[[2012]]},"abstract":"<jats:p>This paper discusses several modelling aspects that are important for the performance predictions of a ducted propulsor with a low-order Panel Method. The aspects discussed are the alignment of the wake geometry, the influence of the duct boundary layer on the wake pitch, and the influence of a transpiration velocity through the gap. The analysis is carried out for propeller Ka4-70 operating without and inside a modified duct 19A, in which the rounded trailing edge is replaced by a sharp trailing edge. Experimental data for the thrust and torque are used to validate the numerical results. The pitch of the tip vortex is found to have a strong influence on the propeller and duct loads. A good agreement with the measurements is achieved when the wake alignment is corrected for the presence of the duct boundary layer.<\/jats:p>","DOI":"10.1155\/2012\/474785","type":"journal-article","created":{"date-parts":[[2012,7,19]],"date-time":"2012-07-19T08:20:09Z","timestamp":1342686009000},"page":"1-11","source":"Crossref","is-referenced-by-count":33,"title":["Open-Water Thrust and Torque Predictions of a Ducted Propeller System with a Panel Method"],"prefix":"10.1155","volume":"2012","author":[{"given":"J.","family":"Baltazar","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, Marine Environment and Technology Center (MARETEC), Instituto Superior T\u00e9cnico (IST), Technical University of Lisbon, 1049-001 Lisbon, Portugal"}]},{"given":"J. A. C.","family":"Falc\u00e3o de Campos","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Marine Environment and Technology Center (MARETEC), Instituto Superior T\u00e9cnico (IST), Technical University of Lisbon, 1049-001 Lisbon, Portugal"}]},{"given":"J.","family":"Bosschers","sequence":"additional","affiliation":[{"name":"Maritime Research Institute Netherlands (MARIN), Wageningen, The Netherlands"}]}],"member":"98","reference":[{"key":"4","volume":"95","year":"1987","journal-title":"Transactions of Society of Naval Architects and Marine Engineers"},{"key":"9","first-page":"522","volume":"74","year":"1966","journal-title":"Transactions of Society of Naval Architects and Marine Engineers"},{"issue":"2","key":"10","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1016\/0021-9991(83)90065-7","volume":"50","year":"1983","journal-title":"Journal of Computational Physics"},{"issue":"3","key":"12","doi-asserted-by":"crossref","first-page":"368","DOI":"10.2514\/3.49706","volume":"13","year":"1975","journal-title":"AIAA Journal"},{"key":"13","first-page":"79","volume":"166","year":"1989","journal-title":"Journal of The Society of Naval Architects of Japan"},{"issue":"92-001","key":"15","year":"1992"}],"container-title":["International Journal of Rotating Machinery"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/ijrm\/2012\/474785.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/ijrm\/2012\/474785.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/ijrm\/2012\/474785.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2017,6,20]],"date-time":"2017-06-20T17:34:00Z","timestamp":1497980040000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.hindawi.com\/journals\/ijrm\/2012\/474785\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012]]},"references-count":6,"alternative-id":["474785","474785"],"URL":"https:\/\/doi.org\/10.1155\/2012\/474785","relation":{},"ISSN":["1023-621X","1542-3034"],"issn-type":[{"value":"1023-621X","type":"print"},{"value":"1542-3034","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012]]}}}