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In addition, particle image velocimetry velocity measurements were taken in the water channel to obtain the quantitative information about the three-dimensional velocity field over the strake and wing surfaces. The results obtained at low, medium and high angles of attacks represent three distinct cases of interaction between the strake and wing vortices. Namely, at <jats:italic>\u03b1<\/jats:italic>\u2009=\u20095<jats:sup>o<\/jats:sup> and 10\u00b0 the strake and wing vortices were developed over the wing surface without significant interaction noticed; at <jats:italic>\u03b1<\/jats:italic>\u2009=\u200920\u00b0, the strake vortex strongly interacted with the wing vortex in an intertwining manner, which was sensitive to Reynolds number; at <jats:italic>\u03b1<\/jats:italic>\u2009=\u200930\u00b0, the breakdown of the strake vortex took place close to the junction of the strake and the wing; thus, the interaction of the strake and the wing vortices appeared to be less significant than the case of <jats:italic>\u03b1<\/jats:italic>\u2009=\u200920\u00b0.<\/jats:p>\n                <jats:p><jats:bold>Graphic abstract<\/jats:bold><\/jats:p>","DOI":"10.1007\/s12650-021-00764-0","type":"journal-article","created":{"date-parts":[[2021,7,17]],"date-time":"2021-07-17T14:02:37Z","timestamp":1626530557000},"page":"1189-1205","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Vortex interaction on a LEX configuration"],"prefix":"10.1007","volume":"24","author":[{"given":"Moo-Ting","family":"Chou","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3655-9917","authenticated-orcid":false,"given":"Jiun-Jih","family":"Miau","sequence":"additional","affiliation":[]},{"given":"Li-Yu","family":"Chen","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2021,7,17]]},"reference":[{"key":"764_CR1","doi-asserted-by":"publisher","unstructured":"CK Choi, DK Kwon (1998) Wind tunnel blockage effects on aerodynamic behavior of bluff body. 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