rough surfaces
Simulation of Multi-Layer Rough Surfaces Media in the Passive Millimeter-Wave Imaging
... micro- rough surface is considered into several small planes and then much more calculations are needed but the result accuracy can hardly be ...multi-layer rough surface, we present an improved model which ...
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High Frequency Roughness Scattering from Various Rough Surfaces: Theory and Laboratory Experiments
... anisotropic rough surfaces was experimentally and theoretically investigated for high frequencies about 500 ...two-dimensional rough sur- faces which roughness was either isotropic (characterized by ...
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Radar Scatter from Layered Media and Rough Surfaces
... to rough surface and stratified media ...the rough surface, two integral equations are generated that describe the fields above and below the surface along with a boundary equation that naturally evolves from ...
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Dynamics of contact line motion during the wetting of rough surfaces and correlation with topographical surface parameters
... real surfaces has been performed for a wide range of common engineering materials (Al alloy, Steel alloy, Ceramic, Cu Alloy, PMMA, Ti ...sinusoidal surfaces as a small parameter defining surface ...very ...
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Vorticity in the turbulent flow above variously rough surfaces
... Abstract. Highly turbulent flows above variously rough surfaces were investigated by means of Time-Resolved Particle Image Velocimetry in a wind tunnel. Proper Orthogonal Decomposition was applied to both ...
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Three Dimensional Electromagnetic Scattering of Two-Layer Rough Surfaces Using Physical Optics Approximation Algorithm
... two-layer rough surfaces is calculated by using the proposed POA method, and the model is validated by comparing the results with those obtained from a numerical reference method based on ...two-layer ...
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Gecko toe and lamellar shear adhesion on macroscopic, engineered rough surfaces
... on rough surfaces (Kim and Bhushan, 2007; Chen et ...too rough for the setae alone to adhere to, but is also too smooth for the claws to form a mechanical interlock on, indicating that the ...
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Evolution of the Contact Area with Normal Load for Rough Surfaces: from Atomic to Macroscopic Scales
... The evolution of the contact area with normal load for rough surfaces has great fundamental and practical importance, ranging from earthquake dynamics to machine wear. This work bridges the gap between the ...
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Prevalence of Peri-Implantitis in Implants with Turned and Rough Surfaces: a Systematic Review
... with rough surface may facilitate the accumulation of plaque [27,28], affecting the equilibrium with the host ...with rough implant surface might lose more bone due to the peri-implantitis compared to ...
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Inverse Wave Scattering of Rough Surfaces with Emitters and Receivers in the Transition Zone
... conducting rough surface from single-frequency and multistatic ...the rough part of the ...random rough surfaces with correlation length smaller than the wavelength and slope root mean square ...
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Table model and portable optical sensors for the monitoring of time-dependent liquid spreading over rough surfaces
... The curves depicting the influence of the surface rough- ness on the spreading of the liquids on both the metal and glass surfaces are presented. The feasibility of the different optical sensors for ...
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Analysis of Scattering from Dielectric Rough Surfaces by Hybrid FEM/Bie
... random rough surfaces has been a topic of continuing interest for many years due to its broad applications, such as remote sensing, target detection, material science, oceanography, academic applications, ...
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Parameterization of vertical dispersion coefficient over idealized rough surfaces in isothermal conditions
... wind-tunnel-measured vertical dispersion coefficients are higher than their LES-calculated counterparts that are likely attributed to the non-zero effective emission height and the associated elevated plume trajectory. ...
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Three-Dimensional Laser Radar Range Imagery of Complex Target with Rough Surfaces
... Because the BRDF of the Lambert sample is constant in Figure 3, the received intensity is solely dependent on the angle between the line of sight and the surface normal. As shown in Figure 3(b), as the angle between the ...
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Modelling of High Frequency Roughness Scattering from Various Rough Surfaces through the Small Slope Approximation of First Order
... function is directly related to the scattering method. In Section 3, different rough surfaces are evaluated. The small slope approximation is used with different types of reliefs, from the simplest case to ...
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Study of the emissivity of rough surfaces periodic using the method of coupled waves analysis (CWA) compared with method of geometrical optics approximation (GOA)
... We present in this paper a numerical study of the validity limit of the geometrical optics ap- proximation compared with a differential method which is established according to rigorous for- malisms based on the ...
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A super-algebraically convergent, windowing-based approach to the evaluation of scattering from periodic rough surfaces
... direct rough surface scattering problems in two ...from rough surfaces that are perfectly reflecting, pe- riodic and at least twice continuously differentiable; both sound-soft and sound-hard type ...
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Adhesion of echinoderm tube feet to rough surfaces
... from rough surfaces because the irregular surface introduces shear forces within the adhesive layer even when normal pulls are applied, as in the present study and in those on barnacle cyprids and ...a ...
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Dynamics of contact line motion during the wetting of rough surfaces and correlation with topographical surface parameters
... smooth surfaces can be found in [Castrejón-Pita et ...this rough surface, the half way bounce back boundary condition were ...constructed rough wall will depend on the lattice resolution, however ...
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Wall laws for viscous fluids near rough surfaces
... near rough surfaces, of small amplitude and wavelength ...“genuinely rough”, the wall law at first order is the Dirichlet wall law: the fluid satisfies a “no-slip” boundary condition on the ...
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