Bedform Growth Beneath Periodic Internal Solitary Waves Propagating Through a Tidal Flow
Journal of Geophysical Research: Oceans, Volume 130, Issue 8, August 2025.Abstract Internal solitary waves (ISWs), ubiquitous to lakes and coastal oceans, have often been proposed as a mechanism for generating subaqueous sandwaves. Yet, the physical mechanisms underlying ISW‐driven bedform growth remain poorly understood.
A. Posada‐Bedoya +2 more
wiley +1 more source
Calculation of unsteady transonic aerodynamics for oscillating wings with thickness [PDF]
An analytical approach is presented to account for some of the nonlinear characteristics of the transonic flow equation for finite thickness wings undergoing harmonic oscillation at sonic flight speed in an inviscid, shock-free fluid.
Ruo, S. Y., Theisen, J. G.
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STOL aircraft transient ground effects. Part 1: Fundamental analytical study [PDF]
The first phases of a fundamental analytical study of STOL ground effects were presented. Ground effects were studied in two dimensions to establish the importance of nonlinear effects, to examine transient aspects of ascent and descent near the ground ...
Crowder, J. P. +2 more
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Modelling the aerodynamics of vertical-axis wind turbines in unsteady wind conditions [PDF]
, 2013 Most numerical and experimental studies of the performance of vertical-axis wind turbines have been conducted with the rotors in steady, and thus somewhat artificial, wind conditions - with the result that turbine aerodynamics, under varying wind ...
Brown +8 more
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Comparisons of several aerodynamic methods for application to dynamic loads analyses [PDF]
The results of a study are presented in which the applicability at subsonic speeds of several aerodynamic methods for predicting dynamic gust loads on aircraft, including active control systems, was examined and compared. These aerodynamic methods varied
Kroll, R. I., Miller, R. D.
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Effect of dynamic stall on the aerodynamics of vertical-axis wind turbines [PDF]
, 2011 Accurate simulations of the aerodynamic performance of vertical-axis wind turbines pose a significant challenge for computational fluid dynamics methods.
Angell R. K. +9 more
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Lifting surface theory for a helicopter rotor in forward flight [PDF]
A lifting surface theory has been developed for a helicopter rotor in forward flight for incompressible flow. The method utilized the concept of the linearized acceleration potential and make use of the vortex lattice procedures. Results in terms of lift
Runyan, H. L., Tai, H.
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Characterisation of a horizontal axis wind turbine’s tip and root vortices [PDF]
, 2013 The vortical near wake of a model horizontal axis wind turbine has been investigated experimentally in a water channel. The objective of this work is to study vortex interaction and stability of the helical vortex filaments within a horizontal axis ...
Lo Jacono, David +2 more
core +1 more source
An integrated approach to the optimum design of actively controlled composite wings [PDF]
The importance of interactions among the various disciplines in airplane wing design has been recognized for quite some time. With the introduction of high gain, high authority control systems and the design of thin, flexible, lightweight composite wings,
Livne, E.
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Summary of advanced methods for predicting high speed propeller performance [PDF]
Three advanced analyses for predicting aircraft propeller performance at high subsonic speeds are described. Two of these analyses use a lifting line representation for the propeller blades and vortex filaments for the blade wakes but differ in the ...
Bober, L. A.
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