SIAM Journal on Applied Mathematics, Vol. 79, No. 6 (2019), pp. 2663-2687 (25 pages) We analyze sound propagation in a waveguide filled with a random medium modeled by small-amplitude spatial and ...

The Doppler effect, discovered in 1842 by Christian Doppler, is familiar to most of us; stationary observers of waves such as sound waves will see wavelengths that depend on the relative motion ...

Handheld devices can scan the lower limbs of a patient and 'listen' to the blood flow, providing vital early indication of problems that could lead to strokes or heart attacks. But inexperience or ...

HANDHELD devices can scan the lower limbs of a patient and "listen" to the blood flow, providing vital early indication of problems that could lead to strokes or heart attacks. But inexperience or ...

Ultrasonic flow meters are non-invasive devices that use acoustic vibrations to determine the flow rate of a liquid. There are two types of ultrasonic flow meters – Doppler and transit time. Both ...

Oceanographers have made the first detailed measurements of fast-flowing water and intense mixing in a submarine canyon just off the Washington coast. The headwaters for Puget Sound's famously rich ...

Though Doppler seems relatively simple to implement in ultrasound, analog performance in the latest systems has much higher, more-difficult-to-achieve specifications than standard black-and-white ...

Aerodynamic optimisation is of paramount importance in improving the design of aircrafts, automobiles as well as turbomachinery to reduce energy consumption and improve energy production efficiency.