Turbofan engines are one of the most popular propulsion systems used in commercial
aircraft due to their high thrust and good fuel efficiency. To reduce noise generated from …

In this work, we develop a 2D numerical model of a Y-shaped bifurcating combustor with a
Helmholtz resonator attached. Propane (C 3 H 8) is fueled and burnt with air by applying …

The underwater anechoic coating with local resonant units is an effective method to achieve
low-frequency sound absorption. However, the structure obtained in this way is not …

Helmholtz resonators are widely used as acoustic dampers to mitigate noise in gas turbines
and automotive exhaust systems. In order to increase the damping performance and …

In order to control the low-mid frequency aerodynamic noises, the zero-impedance matching
mechanism of a stepped multi-neck Helmholtz resonator (SMNHR) metasurface on a 1/4 …

Due to the development of aviation hydraulic systems towards high pressure and high flow,
the frequency range of pressure pulsation becomes wider, and the amplitude of pulsation …

To effectively organize design elements in virtual reality (VR) scene design and provide
evaluation methods for the design process, we built a user image space cognitive model …

Acoustic metamaterials with both ventilation and broadband asymmetric absorption have
demonstrated great scientific significance and promising applicability. In this work, we …

Underwater sound absorption materials with a stable performance at various hydrostatic
pressures are important for marine applications. However, most studies about underwater …

Since the development of advanced sound absorption material is highly critical in noise
control applications, anechoic coatings, and acoustic metamaterials, both fabrication …