Results 31 to 40 of about 1,805,737 (314)

New Acoustic Design for the Piscina Mirabilis Located nearby the Port of Misenum

open access: yesHeritage
Many heritage buildings from ancient Rome are being refurbished based on their original plan’s structure. One of them is the piscina mirabilis located nearby in Naples, which was a cistern used by the Romans to collect drinkable water for the navy ...
Antonella Bevilacqua   +4 more
doaj   +1 more source

DDES of Wetted and Cavitating Marine Propeller for CHA Underwater Noise Assessment

open access: yesJournal of Marine Science and Engineering, 2018
In this paper we present results of delayed detached eddy simulation (DDES) and computational hydroacoustics (CHA) simulations of a marine propeller operating in a cavitation tunnel.
Ville M. Viitanen   +3 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Fast Time-Domain Edge-Diffraction Calculations for Interactive Acoustic Simulations

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
The inclusion of edge diffraction has long been recognized as an improvement to geometrical-acoustics (GA) modeling techniques, particularly for acoustic simulations of complex environments that are represented as collections of finite-sized planar ...
Svensson U Peter, Calamia Paul T
doaj   +2 more sources

Possible Merits of the Orchestra Pit Covering for Speech Activities in Baroque Theatres

open access: yesApplied Sciences
Acoustically, Baroque theatres have prove remarkably appropriate for opera, and, in the past, little distinction was drawn in design between drama and opera use, except for the inclusion of an orchestra pit, because both music and words were audible and ...
Silvana Sukaj   +2 more
doaj   +1 more source

Computer graphics visualization for acoustic simulation [PDF]

open access: yesACM SIGGRAPH Computer Graphics, 1989
Computer simulations can be used to generate the spatial and temporal data describing the acoustical behavior of performance halls, but typically the analytical results are difficult to assimilate and compare. By using computer graphics to display the multi-dimensional data, substantially greater amounts of information than that conveyed by standard ...
Adam Stettner, Donald P. Greenberg
openaire   +1 more source

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao   +2 more
wiley   +1 more source

Acoustic Analysis of Two Roman Theatres in Campania: Herculaneum and Cales

open access: yesApplied Sciences
Roman theatres were designed to host spoken drama and musical performances, relying on typical semicircular architectural form and stone materials to achieve favourable acoustic conditions.
Gino Iannace   +2 more
doaj   +1 more source

Reliable Compact Models for the Investigation of Acoustic High-Frequency Effects in MEMS Transducers

open access: yesProceedings, 2018
We present a fully coupled multi-energy domain compact model of a MEMS microphone dedicated to the investigation of acoustic high-frequency effects affecting the device behavior.
Gabriele Bosetti   +3 more
doaj   +1 more source

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

open access: yesAdvanced Engineering Materials, EarlyView.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ   +19 more
wiley   +1 more source

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