منابع مشابه
Statistical Estimation of Turbulent Trailing Edge Noise
A new computational aeroacoustic model suitable for the prediction of turbulent airfoil trailing edge noise is presented. The method (known as the RANS based Statistical Noise Model or RSNM) combines numerically generated, mean turbulence information with a Green’s function for a semi-infinite half-plane to generate a far-field acoustic auto-spectrum. As a preliminary application of the method,...
متن کاملLES tests on airfoil trailing edge serration
In the present study, a large number of acoustic simulations are carried out for a low noise airfoil with different Trailing Edge Serrations (TES). The Ffowcs Williams-Hawkings (FWH) acoustic analogy is used for noise prediction at trailing edge. The acoustic solver is running on the platform of our in-house incompressible flow solver EllipSys3D. The flow solution is first obtained from the Lar...
متن کاملBound attractant at the leading vs. the trailing edge determines chemotactic prowess.
We have analyzed chemotaxis of neutrophil-differentiated HL60 cells in microfluidic devices that create exponential gradients of the chemoattractant, f-Met-Leu-Phe (fMLP). Such gradients expose each cell to a difference in fMLP concentration (DeltaC) across its diameter that is directly proportional to the ambient concentration (C) at that cell's position in the gradient, so the ratio DeltaC/C ...
متن کاملArtificial Selection Reveals High Genetic Variation in Phenology at the Trailing Edge of a Species Range.
Species responses to climate change depend on the interplay of migration and adaptation, yet we know relatively little about the potential for adaptation. Genetic adaptations to climate change often involve shifts in the timing of phenological events, such as flowering. If populations at the edge of a species range have lower genetic variation in phenological traits than central populations, th...
متن کاملCollective cell migration requires vesicular trafficking for chemoattractant delivery at the trailing edge
Chemoattractant signaling induces the polarization and directed movement of cells secondary to the activation of multiple effector pathways. In addition, chemotactic signals can be amplified and relayed to proximal cells via the synthesis and secretion of additional chemoattractant. The mechanisms underlying such remarkable features remain ill defined. We show that the asymmetrical distribution...
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ژورنال
عنوان ژورنال: Journal of Histotechnology
سال: 2000
ISSN: 0147-8885,2046-0236
DOI: 10.1179/014788800794812896