Sentence examples for perforation diameter from inspiring English sources

Furthermore, the acoustic energy dissipation by the micro-perforated panel absorber with a large perforation diameter which is low in the linear regime can become important and interesting at high sound pressure level.

The influences of perforation diameter and perforation ratio on the vibroacoustic performance of the sandwich are also explored.

Different parameters are considered in the simplified method, including pitch, perforation diameter, solar radiation, solar absorptivity, approach velocity, ambient air temperature, absorber plate temperature, and so on.

Therefore, three perforations sizes were studied having perforation diameter to the beam total depth ratio (D/t) of 0.38, 0.50, and 0.62.

Their absorption curve can be reliably predicted by using well established models, such as the Maa and fluid equivalent models, which depend on the perforation diameter, the perforation ratio, and the panel and air gap thicknesses.

In design #3, all the perforation diameters are assumed identical and use only one parameter to determine the optimal perforation diameter based on the minimization of ΔT and ΔP.

A three-dimensional inverse design problem is examined in this work using a general purpose commercial code CFD-ACE+ and the Levenberg Marquardt Method (LMM) to estimate the optimal perforation diameters of perforated pin fin array based on the desired temperature difference between base plate averaged temperature and ambient temperature (ΔT) and system pressure drop (ΔP).

The perforation diameters, and perforated intervals were changed in order to match the pressure drops.

Perforated plate with three perforation diameters: 9, 10 and 11 mm, two ligaments length: 3.5 and 4.5 mm ligaments, set at 0° and 28° angles, were combined to 13 mm basic plate and tested against 12.7 mm API ammunition.

In this work, parallel perforated ceramics with different perforation diameters were installed into the neck of a Helmholtz resonator to improve its acoustic impedance to simultaneously achieve a better acoustic absorption coefficient and a wider absorption bandwidth.

The injection side is designed with equal pressure losses principle and is free to change the perforation diameters, the number of shots, and perforated length.