On the Air Resistance and the Bernoulli Effect of the Human Larynx
On the Air Resistance and the Bernoulli Effect of the Human Larynx
复制标题
论人喉的空气阻力和伯努利效应
DOI：
--
复制
发表时间：
1957
期刊：
影响因子：
--
通讯作者：
P. Doornenbal
中科院分区：
文献类型：
--
作者：
J. Berg;J. Zantema;P. Doornenbal
本文建立了喉部的模型，并对该模型进行了空气阻力的测量。测量声门直径d从0.1到3.2 mm，声门下压力Ps高达64 cm水和/或体积速度v高达2升/秒时的直流电阻R。一个很好的近似是，阻力等于与d−3成比例的摩擦项和与vd−2成比例的湍流项之和。在小直径和/或小体积速度下，摩擦项占主导地位，v与Psd3成正比，微分阻力Rd=R。湍流项在大直径和/或大体积速度下占主导地位，v与Ps12d成正比，Rd= 2R。在主要区域，声门出口的压力约为- 12PB，其中PB为声门内的动压，声门入口的压力约为1.37PB。讨论了结果对正常语音产生的各种问题的适用性和意义。
A model of the larynx has been constructed, and measurements of air resistance for this model have been made. The dc resistance R was measured for diameter d of the glottis from 0.1 to 3.2 mm, for subglottic pressures Ps up to 64 cm water and/or volume velocities v up to 2 liters/sec. To a good approximation, the resistance was equal to the sum of a frictional term, proportional to d−3, and a turbulence term, proportional to vd−2. The frictional term dominates at small diameters and/or small volume velocities, with v proportional to Psd3 and the differential resistance Rd=R. The turbulence term dominates at large diameters and/or large volume velocities, with v proportional to Ps12d and Rd= 2R. Over the major region the pressure at the outlet of the glottis was about −12PB, where PB is the kinetic pressure in the glottis, and the pressure over the entry of the glottis was about 1.37PB. The applicability and the implications of the results to various problems of normal voice production are discussed.