SPH simulations of aeroacoustic problems in vocal tracts

doi:10.16511/j.cnki.qhdxxb.2016.26.019

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Abstract Simulation of human sound wave propagation need to take into account the moving boundaries and fluid flow within the vocal tract for accurate realistic models. Traditional mesh-based methods that are widely used to study human sound production have many problems due to mesh reconstruction and distortion, so they are not as effective as meshless methods. The aeroacoustic wave equations in the Eulerian framework are transformed to the governing equations for wave propagation in the Lagrangian form and discretized using the smoothed particle hydrodynamics (SPH) method. The accuracy and reliability of SPH for wave propagation in a static media are shown by comparisons with finite difference time domain (FDTD) results. This method is validated against the Doppler effect based theoretical solutions for one-and two-dimensional aeroacoustics to verify the ability of SPH to solve complex aeroacoustic problems.

Keywords aeroacoustics vocal tract meshless smoothed particle hydrodynamics Lagrangian method

ZTFLH:	TP391
	O422
	V211.3

Issue Date: 15 November 2016

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	WEI Jianguo
	HAN Jiang
	HOU Qingzhi
	WANG Song
	DANG Jianwu

Cite this article:

WEI Jianguo,HAN Jiang,HOU Qingzhi, et al. SPH simulations of aeroacoustic problems in vocal tracts[J]. Journal of Tsinghua University(Science and Technology), 2016, 56(11): 1242-1248.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2016.26.019 OR http://jst.tsinghuajournals.com/EN/Y2016/V56/I11/1242

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