Zy. Jiang et Jf. Greenleaf, THE NONLINEAR-INTERACTION OF 2 PLANE-WAVES IN A VISCOUS MEDIUM, The Journal of the Acoustical Society of America, 99(5), 1996, pp. 2783-2790
Earlier studies [P. J. Westervelt, J. Acoust. Soc. Am. 29, 199-203, 93
4-935 (1957)] of the mutual nonlinear interaction of two plane waves o
f sound with each other are extended to include the viscous effect. Th
e viscous effect is considered both from the equations of motion and t
he equation of state of the medium. An analytical solution to the lowe
st-order scattering process is obtained if the viscous effect of secon
d order and higher can be neglected. (C) 1996 Acoustical Society of Am
erica.