Results 31 to 40 of about 4,272 (296)
Insight into Damping Sources in Turbines
Fatigue of Aircraft Structures, 2023 Blade vibrations in aircraft engines are a significant challenge that must be overcome during the design and development of modern turbine engines.
Moneta Grzegorz
doaj +1 more source
Aerodynamic Study of a NACA 64418 Rectangular Wing under Forced Pitching Motions
Fluids, 2021 The aerodynamic behavior of a pitching NACA 64418 rectangular wing was experimentally studied in a subsonic wind tunnel. The wing had a chord c = 0.5 m, a span which covered the distance between the two parallel tunnel walls and an axis of rotation 0.35 ...
Dimitris Gkiolas, Dimitrios Mathioulakis
doaj +1 more source
Stability of suspension bridge I: Aerodynamic and structural damping
Mathematical Problems in Engineering, 1997 In this paper we consider a few dynamic models of suspension bridge described by partial differential equations with linear and nonlinear couplings. We study analytically the stability properties of these models and the relative effectiveness of aerodynamic and structural damping.
Ahmed, N. U., Harbi, H.
openaire +2 more sources
Sound radiation in turbulent channel flows [PDF]
, 2003 Lighthill’s acoustic analogy is formulated for turbulent channel flow with pressure as the acoustic variable, and integrated over the channel width to produce a two-dimensional inhomogeneous wave equation.
Morfey, Christopher L. +2 more
core +1 more source
, 2003 Measurement of the damped oscillation of a section of the UK East Coast Main Line (ECML) catenary/contact wire system was undertaken, and the natural frequency and mechanical damping were found to be 1.4Hz and 0.05 respectively. This information was used
Craighead, I.A. +3 more
core +1 more source
Estimation of three-dimensional aerodynamic damping using CFD [PDF]
, 2020 Aeroelastic phenomena of stall flutter are the result of the negative aerodynamic damping associated with separated flow. From this basis, an investigation has been conducted to estimate the aerodynamic damping from a time-marching aeroelastic ...
Jinks, E. +5 more
core +1 more source
Energies, 2022 As wind turbines become larger and their towers more slender, aeroelastic effects play a bigger role in the wind turbine’s dynamic behavior. This study focuses on the along-wind aerodynamic damping of wind turbine towers, which has been determined by ...
Robert Fontecha +4 more
doaj +1 more source
Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment
Molecular Oncology, EarlyView.This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley +1 more source
FEBS Open Bio, EarlyView.We first identified functional murine mitochondrial N‐formyl peptides (MT‐FPs) and investigated their effects on the in vitro myeloid‐derived suppressor cell (MDSC) generation from bone marrow cells. We demonstrated that MT‐FPs acted directly on bone marrow cells to promote MDSC generation and modulated the polymorphonuclear (PMN)‐MDSC/monocyte (M ...
Miyako Ozawa +2 more
wiley +1 more source
, 2022 The aerodynamic damping reflects the aero-structure interaction and is intrinsically involved in a fully coupled turbine. However, it is still of great importance to theoretically quantify the aerodynamic damping of a HAWT in some cases.
Yu, Y, Chen, Y, Gao, W, Wu, D
core +1 more source