Survey of Army/NASA rotorcraft aeroelastic stability research [PDF]
Theoretical and experimental developments in the aeroelastic and aeromechanical stability of helicopters and tilt-rotor aircraft are addressed. Included are the underlying nonlinear structural mechanics of slender rotating beams, necessary for accurate ...
Hodges, Dewey H. +3 more
core +1 more source
Butterfly Clap-Fling Flight Mechanisms Observed by Schlieren Imaging for the Design of Bio-Inspired Micro Air Vehicles. [PDF]
Prisăcariu EG +5 more
europepmc +1 more source
Experimental Factors and Techniques for Pool Boiling Heat Transfer Enhancement: A Critical Review
ABSTRACT This review presents a comprehensive assessment of active strategies for enhancing pool boiling heat transfer, with a focus on techniques that do not rely solely on the boiling surface modification. It examines a broad range of methodologies including fluid additives, external fields, mechanical interventions, and thermal‐geometric tuning that
José E. Pereira +2 more
wiley +1 more source
Numerical Study into the Spanwise Effects for the Three-Dimensional Unsteady Flow over a Bio-Inspired Corrugated Infinite Wing at Low Reynolds Number. [PDF]
Alhinai A, Schenkel T.
europepmc +1 more source
ABSTRACT Counterflow heat exchangers (CHXs) thermally couple consumers and producers to a district heating network (DHN). Fluctuating loads and control actions naturally lead to unsteady operation conditions of the network and its components, posing a challenge for DHN models and CHX parameterizations based on Nusselt correlations that assume steady ...
Marten Klein +5 more
wiley +1 more source
Bridging spatial and temporal surface pressure dynamics for gust aerodynamic modeling. [PDF]
Chen D, Liang A, Sun B, Rival DE, Fan D.
europepmc +1 more source
Ocean Wave Modulation of Offshore Wind Turbine Loads and Wake
ABSTRACT This study examines how wave‐induced modulation affects the operational performance and structural dynamics of fixed‐bottom offshore wind turbines operating under a neutral atmospheric boundary layer profile. To capture these effects accurately while maintaining computational efficiency, unsteady RANS modelling techniques are employed.
Guillén Campaña‐Alonso +2 more
wiley +1 more source
ABSTRACT Optimising turbine layouts to maximise power output is crucial for wind farm development, particularly in complex terrain where analytical wake models fail to capture key flow physics. We present the first application of Bayesian optimisation (BO) combined with large eddy simulations (LES) for utility‐scale wind farm layout optimisation in ...
Christian Jané‐Ippel +2 more
wiley +1 more source
Hybrid LQR-H<sub>2</sub> Control of a Kestrel-Based Ornithopter with a Nature-Inspired Flow Control Device for Gust Mitigation. [PDF]
Hussain S, Hennache A, Abbasi N, Xu D.
europepmc +1 more source
Comparison of Power and Thrust Performance for a Fixed and Floating Offshore Wind Turbine
ABSTRACT Floating offshore wind turbines have been identified as a critical technology for sustainable electricity generation. Wind resource assessment is used to determine optimal locations for floating wind farms. However, current methodologies do not account for performance differences between fixed and floating turbines due to wind‐ and wave ...
Jackson P. Hardin +3 more
wiley +1 more source

