Results 91 to 100 of about 142,516 (311)

Shrouded Wind and Water Turbine Analytical Model Extensions for Tip Gaps, Center Bodies, and Flow Blockage

open access: yesWind Energy, Volume 29, Issue 2, February 2026.
ABSTRACT This paper provides improvements to a previously presented simple, accurate, lower order analytical model for predicting the performance of horizontal‐axis shrouded turbines for a wide range of shroud airfoil shapes varying in length, camber, and thickness. The new, extended model incorporates explicit quantitative predictions of those effects
M. J. Werle
wiley   +1 more source

Boundary Layer Separation and Reattachment Detection on Airfoils by Thermal Flow Sensors

open access: yesSensors, 2012
A sensor concept for detection of boundary layer separation (flow separation, stall) and reattachment on airfoils is introduced in this paper. Boundary layer separation and reattachment are phenomena of fluid mechanics showing characteristics of ...
Peter Busche   +4 more
doaj   +1 more source

Idealized Offshore Low‐Level Jets for Turbine Structural Impact Considerations

open access: yesWind Energy, Volume 29, Issue 2, February 2026.
ABSTRACT Low‐level jets (LLJs) describe conditions in which the wind speed reaches a local maximum with respect to altitude near the surface; they have been observed intermittently in the US mid‐Atlantic offshore environment. LLJs pose unique operating conditions for future wind turbines operating in the region, such as negative shear and locally ...
Emily de Jong   +2 more
wiley   +1 more source

Flutter speed estimation using presented differential quadrature method formulation

open access: yesEngineering Applications of Computational Fluid Mechanics, 2019
In this paper the flutter behavior of a typical wing is investigated. The study is performed by presented Deferential Quadrature Method (DQM). The aerodynamic part adopted Wagner functions to model subsonic regime.
Mohammad Ghalandari   +3 more
doaj   +1 more source

The aerodynamic design of an advanced rotor airfoil [PDF]

open access: yes
An advanced rotor airfoil, designed utilizing supercritical airfoil technology and advanced design and analysis methodology is described. The airfoil was designed subject to stringent aerodynamic design criteria for improving the performance over the ...
Blackwell, J. A., Jr., Hinson, B. L.
core   +1 more source

Dual strain gage balance system for measuring light loads [PDF]

open access: yes, 1991
A dual strain gage balance system for measuring normal and axial forces and pitching moment of a metric airfoil model imparted by aerodynamic loads applied to the airfoil model during wind tunnel testing includes a pair of non-metric panels being rigidly
Roberts, Paul W.
core   +1 more source

Directed percolation in aerodynamics: resolving laminar separation bubble on airfoils [PDF]

open access: yes, 2017
In nature, phase transitions prevail amongst inherently different systems, while frequently showing a universal behavior at their critical point. As a fundamental phenomenon of fluid mechanics, recent studies suggested laminar-turbulent transition ...
Gülker, Gerd   +4 more
core   +3 more sources

Non‐Linear Reduced Order Modelling of Transonic Potential Flows for Fast Aerodynamic Analysis

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 2, 30 January 2026.
ABSTRACT This work presents a physics‐based reduced order modelling (ROM) framework for the efficient simulation of steady transonic potential flows around aerodynamic configurations. The approach leverages proper orthogonal decomposition and a least‐squares Petrov‐Galerkin (LSPG) projection to construct intrusive ROMs for the full potential equation ...
M. Zuñiga   +3 more
wiley   +1 more source

Mars Science Helicopter Conceptual Design [PDF]

open access: yes, 2020
Robotic planetary aerial vehicles increase the range of terrain that can be examined, compared to traditional landers and rovers, and have more near-surface capability than orbiters. Aerial mobility is a promising possibility for planetary exploration as
Balaram, Jayarao   +15 more
core   +1 more source

One‐Dimensional Finite Elements With Arbitrary Cross‐Sectional Displacement Fields

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 1, 15 January 2026.
ABSTRACT This paper introduces an unprecedented unified approach for developing structural theories with an arbitrary kinematic variable over the beam cross‐section. Each of the three displacement variables can be analyzed using an independent expansion function. Both the order of the expansion and the number of terms in each field can be any. That is,
E. Carrera, D. Scano, E. Zappino
wiley   +1 more source

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