Numerical study of the effects of inferior and superior vocal fold surface angles on vocal fold pressure distributions.
Numerical study of the effects of inferior and superior vocal fold surface angles on vocal fold pressure distributions.
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DOI：
10.1121/1.2186548
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发表时间：
2006-04
期刊：
影响因子：
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通讯作者：
Sheng Li;R. Scherer;M. Wan;Supin Wang;Huihui Wu
中科院分区：
文献类型：
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作者：
Sheng Li;R. Scherer;M. Wan;Supin Wang;Huihui Wu
声带几何形状在人类发声中起着重要作用。发声期间存在多种下声带和上声带表面角度[Nanayakkara，硕士论文，鲍林格林州立大学，鲍林格林，俄亥俄州(2005)]。这项研究探讨了这些角度如何影响声带上的压力分布，以及它们如何影响发声。计算代码 FLUENT 用于获取层流、不可压缩流的压力分布。选择18个下声带表面角度和19个上声带表面角度作为三个特定声门角度，均匀0度、会聚10度和发散10度。最小声门直径 (0.01 cm)、跨声门压力 (8 cm H2O) 和声门入口半径 (0.15 cm) 保持恒定，并且每个声门角度的声门出口半径保持恒定。结果表明，声带表面压力与人类发声实际的下声带和上声带表面角度无关。这些结果表明，与声门入口和出口半径、最小直径和角度对声门内压力的重要影响相比，下声带和上声带表面角度（排除与假声带可能的相互作用）对声门内压力没有影响。
Vocal fold geometry plays an important role in human phonation. A wide range of inferior and superior vocal fold surface angles has been shown to be present during phonation [Nanayakkara, Master's thesis, Bowling Green State University, Bowling Green, OH (2005)]. This study explored how these angles affect pressure distributions on the vocal folds, and thus how they may affect phonation. The computational code FLUENT was used to obtain pressure distributions for laminar, incompressible flow. Eighteen inferior vocal fold surface angles and nineteen superior vocal fold surface angles were selected for three specific glottal angles, uniform 0 degrees, convergent 10 degrees, and divergent 10 degrees. Minimal glottal diameter (0.01 cm), transglottal pressure (8 cm H2O), and glottal entrance radius (0.15 cm) were held constant, and the glottal exit radius was constant for each glottal angle. Results suggest that the vocal fold surface pressures are independent of the inferior and superior vocal fold surface angles realistic for human phonation. These results suggest that, in contrast to the important effects of glottal entrance and exit radii, minimal diameter, and angle on intraglottal pressures, the inferior and superior vocal fold surface angles (excluding possible interactive effects with the false vocal folds) do not have an influence on the intraglottal pressures.