Results 91 to 100 of about 309,130 (204)

Prediction of Added Resistance in Waves Using a Frequency-Domain Rankine Source Method: Middle-Field Formulation and Low-Speed Validation

open access: yesJournal of Marine Science and Engineering
A three-dimensional frequency-domain ship-motion solver based on the Rankine source method is extended to predict added resistance in waves. Although middle-field formulations have been used mainly in time-domain Rankine panel methods, a middle-field ...
Seunghoon Oh   +4 more
doaj   +1 more source

Single and two capacitor (solenoid) paradox (studied at the realistic circuits)

open access: yes, 2018
We study remarkable two (single) capacitor paradox and we introduce analogously a new two solenoids (inductive coils) paradox at experimentally and theoretically well-known electrical circuits with realistic electrical resistances.
Pankovic, Vladan
core  

Underreamer mechanics [PDF]

open access: yes, 2009
In the oil and gas industry, an underreamer is a tool used to extend and enlarge the diameter of a previously-drilled bore. The problem proposed to the Study Group is to obtain appropriate mathematical models of underreamer dynamics, in forms that will ...
Barton, David   +8 more
core  

A Resistive Wideband Space Beam Splitter [PDF]

open access: yes, 2015
We present the design, construction and measurements of the electromagnetic performance of a wideband space beam splitter. The beam splitter is designed to power divide the incident radiation into reflected and transmitted components for interferometer ...
Mahesh, Nivedita   +3 more
core  

An RF Circuit Model for Carbon Nanotubes

open access: yes, 2002
We develop an rf circuit model for single walled carbon nanotubes for both dc and capacitively contacted geometries. By modeling the nanotube as a nano-transmission line with distributed kinetic and magnetic inductance as well as distributed quantum and ...
Burke, P. J.
core   +1 more source

Research on Wave-Added Resistance and Longitudinal Stability Characteristics of Amphibious Aircraft in Rule Wave

open access: yesJournal of Marine Science and Engineering
Assessing the safety of amphibious aircraft hinges significantly on two key factors: wave-added resistance and motion stability during takeoff and landing on water surfaces. To tackle this, we employed the Reynolds-averaged Navier–Stokes (RANS) equations
Huawei Sun   +5 more
doaj   +1 more source

Estimation of Added Resistance of a Ship in Regular Waves

open access: yesBrodogradnja : An International Journal of Naval Architecture and Ocean Engineering for Research and Development, 2011
Two methods of added resistance calculation are briefly presented, one developed by Faltinsen, and the other by Salvesen. Both are based on the Salvesen, Tuck and Faltinsen linear strip theory, as they use it to define the wave induced motions. The first one obtains the added resistance by direct pressure integration, while the second one consists in ...
Prpić-Oršić, Jasna   +3 more
openaire   +4 more sources

Numerical study of Iran-Bushehr Container Ship motions and added resistance in regular head waves using STAR-CCM+

open access: yesنشریه مهندسی دریا, 2020
Nowadays, the optimal use of energy, speed increase, fuel consumption reduction and environmental pollution prevention are essential in the ship design and manufacturing discussion. So it is critical to be able to estimate ship's response to waves, since
Amirhossein Amiri   +3 more
doaj  

Development of Far-Infrared Detectors for Nondestructive Inspection of Infrastructure Buildings

open access: yesProceedings
In nondestructive evaluation of concrete structures, the far-infrared region, including terahertz waves, which can penetrate concrete and measure the amount of corrosion in the internal steel, has attracted much attention.
Kazuma Iwasaki, Seishi Abe, Tadao Tanabe
doaj   +1 more source

Data-driven Prediction of Added Resistance on Ships in Waves

open access: yes, 2023
In combination, international regulations and digitalization have led to increasing acquisition of in-service data from ships, including navigational and engine-related recordings. However, associated analyses are challenging due to the limited availability of reference data and operation in an environment governed by uncertainty, e.g.
openaire   +1 more source

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