Results 31 to 40 of about 37,239 (284)

Could the Coand\u{a} effect be called the Young effect? The understanding of fluid dynamics of a legendary polymath

open access: yes, 2011
A paper of Thomas Young (1773-1829) on the behavior of streams of air makes a good starting point for discussing the not always fair, sometimes serendipitous, association of a physical phenomenon with its discoverer.
López-Arias, Teresa
core   +1 more source

Deep Learning Framework for Predicting Transonic Wing Buffet Loads Due to Structural Eigenmode-Based Deformations

open access: yesAerospace
In the present paper, a reduced-order modeling (ROM) approach based on a hybrid neural network is presented in order to calculate wing buffet pressure distributions due to structural eigenmode-based deformations.
Rebecca Zahn   +2 more
doaj   +1 more source

Leading-Edge Roughness Affecting Diamond-Wing Aerodynamic Characteristics

open access: yesAerospace, 2018
Diamond wing configurations for low signature vehicles have been studied in recent years. Yet, despite numerous research on highly swept, sharp edged wings, little research on aerodynamics of semi-slender wings with blunt leading-edges exists. This paper
Andrei Buzica   +3 more
doaj   +1 more source

State-space model identification and feedback control of unsteady aerodynamic forces

open access: yes, 2014
Unsteady aerodynamic models are necessary to accurately simulate forces and develop feedback controllers for wings in agile motion; however, these models are often high dimensional or incompatible with modern control techniques.
Brunton, Steven L.   +2 more
core   +1 more source

Modeling space-time correlations of velocity fluctuations in wind farms [PDF]

open access: yes, 2017
An analytical model for the streamwise velocity space-time correlations in turbulent flows is derived and applied to the special case of velocity fluctuations in large wind farms.
Lukassen, Laura J.   +3 more
core   +3 more sources

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Temperature fluctuations in a changing climate: an ensemble-based experimental approach

open access: yesScientific Reports, 2017
There is an ongoing debate in the literature about whether the present global warming is increasing local and global temperature variability. The central methodological issues of this debate relate to the proper treatment of normalised temperature ...
Miklós Vincze   +2 more
doaj   +1 more source

Inverse lift: a signature of the elasticity of complex fluids?

open access: yes, 2005
To understand the mechanics of a complex fluid such as a foam we propose a model experiment (a bidimensional flow around an obstacle) for which an external sollicitation is applied, and a local response is measured, simultaneously.
B. Dollet   +13 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Comparative study on performance accuracy of three probe and five probe flow analysers for wind tunnel testing

open access: yesInternational Journal of Aviation, Aeronautics, and Aerospace, 2021
In the field of inviscid fluid flow studies, the theoretical concept has to be developed even more. In order to make it possible, it is very important to supplement the concepts with strong experimental results.
Akhila Rupesh, J V Muruga Lal Jeyan
doaj   +1 more source

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