A round short tube membrane module with a dual-direction inflow and the ultrasonic irradiation technology is adopted to increase flux of air-gap membrane distillation of tap water and dilute saltwater.

Factors affecting the membrane flux were studied through the experiment made on a system of ultrasonic irradiation air-gap membrane distillation(AGMD).

The rotational two-degree freedom dynamics model of gear-lapping system of a spiral bevel gear with single backlash was established by considering ultrasonic excitation and transmission error excitation.

Cavity flows both with and without sound excitation are studied by solving the 2 D time dependent Reynolds averaged Navier Stokes equations using explicit predictor corrector difference algorithm of Mac Cormack.

The flow induced oscillation in a cavity exposed to external high speed flow and its suppression by means of sound excitation at the leading edge of the cavity are experimentally studied.

An investigation on the effect of the acoustic excitation on flow asymmetry over a slender revolution body at high angles of attack in compressible flows;

Application of support vector machine(SVM) on aircraft structure stress analysis subjected to acoustic excitation;

By employing regression analysis, the simulation models of total vibration acceleration and total stresses with respect to total sound pressure as well as the simulation models of total stresses with respect to total vibration acceleration of an aircraft flap under acoustic excitation were given.