Sound propagation characteristic in grain with large kernel
LI Fang-ju · Yunnan Daxue xuebao. Shehui kexue ban · 2008
With kernel medium model,sound propagation characteristic in grain is studied.It shows that sound characteristic in grain with large kernel has to do with kinematic viscosity,viscosity plays a great role under low frequency and inertia does under high frequency.Sound propagation velocity causes frequency dispersion and it increases with frequency,which does in direct proportion under low frequency,tortuosity makes sound propagation velocity reduced.