Sentence examples for perforation coefficient from inspiring English sources

A new parameter called perforation coefficient which generalises the different perforation shapes is coined.

The effect of the main parameters such as layer density, screen emissivity and perforation coefficient on the thermal performance has been analyzed.

By estimating inter-fracture induced stress during fracturing, the perforation friction coefficient needed to maintain uniform growth of fractures inside a stage is calculated, and reasonable engineering parameters of perforation can be selected based on this.

Two specific applications are investigated: (i) the improvement of porous materials noise reduction coefficient using meso-perforations (ii) the effects of lateral air gaps on the normal incidence sound absorption of mono-layer and two-layer porous materials.

The effects of the stress anisotropy coefficient, the borehole radius, the perforation length, the ratio of the water pressures inside the fracture to that of the borehole, Biot's coefficient and Poisson's ratio on both the critical water pressure and the critical initiation angle are discussed.

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.

A method is developed to calculate the damping coefficient in microstructures with periodic perforations.

The parameter analysis indicates that the perforation length, the borehole radius and the stress anisotropy coefficient significantly affect the critical water pressure and the critical initiation angle.

The 10 perforated outer gloves showed 15 (7 × 1 perforation, 1 × 2 perforations, 2 × 3 perforations) and the one perforated inner layer showed only one perforation.

In addition, the Cb coefficient of cellular beams depends on the web perforation configuration.

Numerical and experimental investigations are performed to evaluate the low frequency sound absorption coefficient (SAC) and sound transmission loss (STL) of corrugated sandwich panels with different perforation configurations, including perforations in one of the face plates, in the corrugated core, and in both the face plate and the corrugated core.