Results 121 to 130 of about 600,184 (313)

Noise Source Distribution of Coaxial Subsonic Jet-Short-Cowl Nozzle

open access: yesJournal of Aerospace Technology and Management, 2014
The noise source distribution of a short-cowl coaxial jet operating at different velocity ratios is described in this work. This was motivated by an ongoing research about noise prediction of coaxial jets through Acoustic Analogy with purposes of ...
Odenir de Almeida   +3 more
doaj  

Intermountain Acoustic Musician, Volume 10 Number 4, April 1993

open access: yes, 1993
Salt Lake City, UT: International Bluegrass Association; The Intermountain Acoustic Music Association is a member of the International Bluegrass Music Association and Folk Alliance, the North American folk music and dance alliance. Intermountain Acoustic
Intermountain Acoustic Music Association
core  

A well posed acoustic analogy based on a moving acoustic medium

open access: yes, 2010
For flows of a lossless gas, the stagnation enthalpy obeys a linear convected wave equation with coefficients which depend on the flow variables. This equation is self-adjoint and one has a reciprocity relation between source and observer. It fulfills for subsonic flow a quadratic conservation equation implying stability.
openaire   +2 more sources

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

open access: yesDeep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng   +7 more
wiley   +1 more source

Intermountain Acoustic Musician, Volume 13 Number 6, June 1996

open access: yes, 1996
Salt Lake City, UT: International Bluegrass Association; The Intermountain Acoustic Music Association is a member of the International Bluegrass Music Association and Folk Alliance, the North American folk music and dance alliance. Intermountain Acoustic
Intermountain Acoustic Music Association
core  

Modeling and Output Optimization of Triboelectric Microphone for Acoustic Energy Harvesting

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work elucidates the fundamental multiphysics coupling mechanisms governing acoustic T‐phone, providing a critical theoretical foundation and a predictive design paradigm for the future engineering and deployment of next‐generation, self‐powered acoustic sensors.
Dan Liu   +6 more
wiley   +1 more source

Circular orbits and chaos bound in slow-rotating curved acoustic black holes

open access: yesEuropean Physical Journal C: Particles and Fields
Acoustic black holes, analogs of gravitational black holes created in fluid systems, have recently been embedded within Schwarzschild spacetime using the Gross–Pitaevskii theory, leading to configurations with both event and acoustic horizons. This study
Balbeer Singh   +2 more
doaj   +1 more source

Intermountain Acoustic Musician, Volume 4 Number 4, April 1987

open access: yes, 1987
Salt Lake City, UT: International Bluegrass Association; The Intermountain Acoustic Music Association is a member of the International Bluegrass Music Association and Folk Alliance, the North American folk music and dance alliance. Intermountain Acoustic
Intermountain Acoustic Music Association
core  

Phase Engineering Enabled Excellent Power Factor and Reduced Thermal Conductivity in ZrCoSb‐Based Half‐Heusler Compounds

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In situ precipitation of Zr6Co16Si7 in ZrCoSb‐based half‐Heusler enables Fermi level optimization and enhanced phonon scattering. Electrical conductivity is significantly improved while the power factor continuously increases, reaching ~3.36 mW m−1 K−2.
Shuyue Tan   +9 more
wiley   +1 more source

Intermountain Acoustic Musician, Volume 15 Number 4, April 1998

open access: yes, 1998
Salt Lake City, UT: International Bluegrass Association; The Intermountain Acoustic Music Association is a member of the International Bluegrass Music Association and Folk Alliance, the North American folk music and dance alliance. Intermountain Acoustic
Intermountain Acoustic Music Association
core  

Home - About - Disclaimer - Privacy