Acoustic response of an unexploded ordnance in shallow water, layered, environments: Predictions using hybrid and coupled modeling techniques

2016 ◽  
Vol 140 (4) ◽  
pp. 2968-2968
Author(s):  
Aubrey L. Espana ◽  
Ahmad T. Abawi ◽  
Steven G. Kargl ◽  
Kevin L. Williams
Keyword(s):  
Shallow Water ◽  
Unexploded Ordnance ◽  
Acoustic Response ◽  
Coupled Modeling ◽  
Modeling Techniques

Variability in normal-incidence acoustic response in shallow-water marine sediments

2015 ◽  
Vol 104 ◽  
pp. 92-103 ◽  
Author(s):  
Roger W. Meredith ◽  
Richard W. Faas ◽  
Douglas N. Lambert
Keyword(s):  
Shallow Water ◽  
Marine Sediments ◽  
Normal Incidence ◽  
Acoustic Response

Variability in the acoustic response of shallow-water marine sediments determined by normal-incident 30-kHz and 50-kHz sound

2002 ◽  
Vol 182 (1-2) ◽  
pp. 179-208 ◽  
Author(s):  
Douglas N. Lambert ◽  
Maria T. Kalcic ◽  
Richard W. Faas
Keyword(s):  
Shallow Water ◽  
Marine Sediments ◽  
Acoustic Response

scholarly journals On Bridging A Modeling Scale Gap: Mesoscale to Microscale Coupling for Wind Energy

2019 ◽  
Vol 100 (12) ◽  
pp. 2533-2550 ◽  
Author(s):  
Sue Ellen Haupt ◽  
Branko Kosovic ◽  
William Shaw ◽  
Larry K. Berg ◽  
Matthew Churchfield ◽  
...  
Keyword(s):  
Wind Energy ◽  
Department Of Energy ◽  
Physical Models ◽  
Plant Performance ◽  
Coupled Modeling ◽  
Terra Incognita ◽  
Modeling Techniques ◽  
Microscale Simulations ◽  
The Impact ◽  
Nonstationary Conditions

Abstract Accurately representing flow across the mesoscale to the microscale is a persistent roadblock for completing realistic microscale simulations. The science challenges that must be addressed to coupling at these scales include the following: 1) What is necessary to capture the variability of the mesoscale flow, and how do we avoid generating spurious rolls within the terra incognita between the scales? 2) Which methods effectively couple the mesoscale to the microscale and capture the correct nonstationary features at the microscale? 3) What are the best methods to initialize turbulence at the microscale? 4) What is the best way to handle the surface-layer parameterizations consistently at the mesoscale and the microscale? 5) How do we assess the impact of improvements in each of these aspects and quantify the uncertainty in the simulations? The U.S. Department of Energy Mesoscale-to-Microscale-Coupling project seeks to develop, verify, and validate physical models and modeling techniques that bridge the most important atmospheric scales determining wind plant performance and reliability, which impacts many meteorological applications. The approach begins with choosing case days that are interesting for wind energy for which there are observational data for validation. The team has focused on modeling nonstationary conditions for both flat and complex terrain. This paper describes the approaches taken to answer the science challenges, culminating in recommendations for best approaches for coupled modeling.

Low‐frequency acoustic response of shallow water ducts

1985 ◽  
Vol 78 (2) ◽  
pp. 622-631 ◽  
Author(s):  
Anthony I. Eller ◽  
David A. Gershfeld
Keyword(s):  
Shallow Water ◽  
Low Frequency ◽  
Acoustic Response

A review on modeling techniques of piezoelectric integrated plates and shells

2019 ◽  
Vol 30 (8) ◽  
pp. 1133-1147 ◽  
Author(s):  
Shun-Qi Zhang ◽  
Guo-Zhong Zhao ◽  
Mekala Narasimha Rao ◽  
Rüdiger Schmidt ◽  
Ying-Jie Yu
Keyword(s):  
Health Monitoring ◽  
Piezoelectric Materials ◽  
Fiber Composite ◽  
Nonlinear Modeling ◽  
Smart Structures ◽  
Geometrically Nonlinear ◽  
Coupled Modeling ◽  
Modeling Techniques ◽  
Precise Prediction ◽  
Plates And Shells

Piezoelectric materials embedded into plates and shells make the structures being capable of sensing and actuation, usually called smart structures, which are frequently used for shape and vibration control, noise control, health monitoring, and energy harvesting. To give a precise prediction of static and dynamic behavior of smart structures, the linear/nonlinear multi-physics coupled modeling technique is of great importance. The article attempts to present the available research on modeling of piezoelectric integrated plates and shells, including (1) through thickness hypotheses for beams, plates, and shells; (2) geometrically nonlinear theories for plates and shells; (3) electroelastic material linear/nonlinear modeling; (4) multi-physics coupled modeling; and (5) modeling of advanced piezo-fiber composite bonded structures.

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