{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T09:38:22Z","timestamp":1775122702635,"version":"3.50.1"},"reference-count":37,"publisher":"Acoustical Society of America (ASA)","issue":"1","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2006,1,1]]},"abstract":"<jats:p>Intraglottal pressure distributions depend upon glottal shape, size, and diameter. This study reports the effects of varying glottal angle on intraglottal and transglottal pressures using a three-dimensional Plexiglas\u2122 model with a glottis having nine symmetric glottal angles and a constant minimal glottal diameter of 0.06cm. The empirical data were supported by computational results using FLUENT. The results suggested that (1) the greater the convergent glottal angle, the greater outward driving forces (higher intraglottal pressures) on the vocal folds; (2) flow resistance was greatest for the uniform glottis, and least for the 10\u00b0 divergent glottis; (3) the greatest negative pressure in the glottis and therefore the greatest pressure recovery for diverging glottal shapes occurred for an angle of 10\u00b0; (4) the smaller the convergent angle, the greater the flow resistance; (5) FLUENT was highly accurate in predicting the empirical pressures of this model; (6) flow separation locations (given by FLUENT) for the divergent glottis moved upstream for larger flows and larger glottal angles. The results suggest that phonatory efficiency related to aerodynamics may be enhanced with vocal fold oscillations that include large convergent angles during glottal opening and small (5\u00b0\u201310\u00b0) divergent angles during glottal closing.<\/jats:p>","DOI":"10.1121\/1.2133491","type":"journal-article","created":{"date-parts":[[2006,1,5]],"date-time":"2006-01-05T17:00:48Z","timestamp":1136480448000},"page":"539-548","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":36,"title":["The effect of glottal angle on intraglottal pressure"],"prefix":"10.1121","volume":"119","author":[{"given":"Sheng","family":"Li","sequence":"first","affiliation":[{"name":"Xi\u2019an Jiaotong University The Key Laboratory of Biomedical Information Engineering of Ministry of Education, and Department of Biomedical Engineering, School of Life Science and Technology, , Xi\u2019an 710049, People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ronald C.","family":"Scherer","sequence":"additional","affiliation":[{"name":"University of Cincinnati Medical Center Department of Otolaryngology\u2014Head and Neck Surgery, , P.O. Box 670528, Cincinnati, Ohio 45267-0528"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"MingXi","family":"Wan","sequence":"additional","affiliation":[{"name":"Xi\u2019an Jiaotong University The Key Laboratory of Biomedical Information Engineering of Ministry of Education, and Department of Biomedical Engineering, School of Life Science and Technology, , Xi\u2019an 710049, People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"SuPin","family":"Wang","sequence":"additional","affiliation":[{"name":"Xi\u2019an Jiaotong University The Key Laboratory of Biomedical Information Engineering of Ministry of Education, and Department of Biomedical Engineering, School of Life Science and Technology, , Xi\u2019an 710049, People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"HuiHui","family":"Wu","sequence":"additional","affiliation":[{"name":"Xi\u2019an Jiaotong University The Key Laboratory of Biomedical Information Engineering of Ministry of Education, and Department of Biomedical Engineering, School of Life Science and Technology, , Xi\u2019an 710049, People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"231","reference":[{"key":"2023071223194105500_c1","doi-asserted-by":"crossref","first-page":"97","DOI":"10.1016\/S0892-1997(03)00012-2","article-title":"The false vocal folds: Shape and size in frontal view during phonation based on laminagraphic tracings","volume":"17","year":"2003","journal-title":"J. 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