Results 31 to 40 of about 3,255 (122)
Predictive Control for Alleviation of Gust Loads on Very Flexible Aircraft
, 2014 In this work the dynamics of very flexible aircraft are described by a set of non-linear, multi-disciplinary equations of motion. Primary structural components are represented by a geometrically-exact composite beam model which captures the large dynamic
Chen P. +8 more
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Water Resources Research, Volume 61, Issue 11, November 2025.Abstract Sediment entrainment marks the initiation of particle motion on the bed surface and plays a crucial role in quantifying sediment transport. While the entrainment behavior might vary among different geophysical flows, the underlying mechanisms are often similar.
Xueqiang Lu +8 more
wiley +1 more source
River Research and Applications, Volume 41, Issue 8, Page 1712-1725, October 2025.ABSTRACT Studies on the quantity and quality of the spawning habitats of resident brown trout on the catchment scale of rivers are rare. The spawning habitats of salmonids are locally nested along river corridors and are found throughout variable channel patterns, with a preference for sediments composed of gravel and cobbles and appropriate flow ...
C. Hauer +4 more
wiley +1 more source
Developments in steady and unsteady aerodynamics for use in aeroelastic analysis and design [PDF]
A review is given of seven research projects which are aimed at improving the generality, accuracy, and computational efficiency of steady and unsteady aerodynamic theory for use in aeroelastic analysis and design.
Bland, S. R., Yates, E. C., Jr.
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The interaction of helical tip and root vortices in a wind turbine wake [PDF]
, 2013 Analysis of the helical vortices measured behind a model wind turbine in a water channel are reported. Phase-locked measurements using planar particle image ve- locimetry are taken behind a Glauert rotor to investigate the evolution and breakdown of the ...
Blackburn, Hugh M. +4 more
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Flow Memory Effect on Open‐Frame Remotely Operated Vehicle Motion
Journal of Field Robotics, Volume 42, Issue 6, Page 2611-2638, September 2025.ABSTRACT The flow memory effect is a kind of viscous force caused by acceleration between continuous phases and underwater vehicles and the development of the boundary layer near the interfacial surface. This paper establishes a 6‐degrees‐of‐freedom unsteady equation of motion describing the flow memory effect on viscous hydrodynamic loads.
Ruinan Guo +5 more
wiley +1 more source
Unsteady supersonic aerodynamic theory for interfering surfaces by the method of potential gradient [PDF]
A generalized solution of the hyperbolic wave equation was further developed to relate the velocity components at a field point to the potential gradient distribution in the dependence domain.
Arppa, K., Jones, W. P.
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Unsteady Aerodynamic Performance of Model Wings at Low Reynolds Numbers [PDF]
, 1993 The synthesis of a comprehensive theory of force production in insect flight is hindered in part by the lack of precise knowledge of unsteady forces produced by wings.
Dickinson, Michael H., Götz, Karl G.
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Journal of Geophysical Research: Earth Surface, Volume 130, Issue 8, August 2025.Abstract The Froude number (Fr) is an important parameter that affects turbulence structures, bedload transport, and bedforms in mountain rivers. In a prior study by Liu et al. (2024, https://doi.org/10.1063/5.0222673), turbulence structures in open channel flow through a boulder array placed on seven layers of spheres (comprising the channel bed ...
Zhengdao Tang +4 more
wiley +1 more source
Unsteady transonic flow calculations for interfering lifting surface configurations [PDF]
Unsteady transonic flow calculations are presented for aerodynamically interfering lifting surface configurations. Calculations are performed by extending the XTRAN3S (Version 1.5) unsteady transonic small-disturbance code to allow the treatment of an ...
Batina, J. T.
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