Simulation on Effect of Surface Impedance for Reducing Aerodynamic Sound from Circular Cylinder

2002 ◽  
Author(s):  
Indika Yahathugoda ◽  
Sadao Akishita
Keyword(s):  
Circular Cylinder ◽  
Surface Impedance ◽  
Aerodynamic Sound ◽  
Effect Of Surface

EFFECTS OF SURFACE TENSION ON TRAPPED MODES IN A TWO-LAYER FLUID

2015 ◽  
Vol 57 (2) ◽  
pp. 189-203 ◽  
Author(s):  
S. SAHA ◽  
S. N. BORA
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Circular Cylinder ◽  
Boundary Value Problems ◽  
Finite Depth ◽  
Trapped Modes ◽  
Trapped Waves ◽  
Linearized Theory ◽  
Horizontal Circular Cylinder ◽  
Effect Of Surface

We consider a two-layer fluid of finite depth with a free surface and, in particular, the surface tension at the free surface and the interface. The usual assumptions of a linearized theory are considered. The objective of this work is to analyse the effect of surface tension on trapped modes, when a horizontal circular cylinder is submerged in either of the layers of a two-layer fluid. By setting up boundary value problems for both of the layers, we find the frequencies for which trapped waves exist. Then, we numerically analyse the effect of variation of surface tension parameters on the trapped modes, and conclude that realistic changes in surface tension do not have a significant effect on the frequencies of these.

506 Analysis of aerodynamic sound generated from inclined circular cylinder

2001 ◽  
Vol 2001.54 (0) ◽  
pp. 129-130
Author(s):  
Yasutake HARAMOTO ◽  
Shouji YASUDA ◽  
Kazuyoshi MATSUZAKI ◽  
Mizue MUNEKATA ◽  
Hideki OHBA
Keyword(s):  
Circular Cylinder ◽  
Aerodynamic Sound

604 Aerodynamic Sound and Flow Field Generated from Combinational Inclined Circular Cylinder

2013 ◽  
Vol 2013.66 (0) ◽  
pp. 169-170
Author(s):  
Kohei SATOH ◽  
Toshiyuki AOKI ◽  
Kosuke SATOH ◽  
Nobuaki KONDOH
Keyword(s):  
Circular Cylinder ◽  
Flow Field ◽  
Aerodynamic Sound

Relation between the three-dimensional flow structure and aerodynamic sound generated from inclined circular cylinder

2004 ◽  
Vol 13 (2) ◽  
pp. 127-132 ◽  
Author(s):  
Mitsuru Shingai ◽  
Yasutake Haramoto ◽  
Kazuyoshi Matsuzaki ◽  
Mizue Munekata ◽  
Hideki Ohba
Keyword(s):  
Circular Cylinder ◽  
Flow Structure ◽  
Three Dimensional ◽  
Three Dimensional Flow ◽  
Aerodynamic Sound ◽  
Dimensional Flow

scholarly journals Dielectric Polarization and Particle Shape Effects

2007 ◽  
Vol 2007 ◽  
pp. 1-9 ◽  
Author(s):  
Ari Sihvola
Keyword(s):  
Circular Cylinder ◽  
Particle Shape ◽  
Material Modeling ◽  
Dielectric Polarization ◽  
Surface Geometry ◽  
Surface Parameters ◽  
Regular Polyhedra ◽  
Shape Effects ◽  
Different Shapes ◽  
Effect Of Surface

This article reviews polarizability properties of particles and clusters. Especially the effect of surface geometry is given attention. The important parameter of normalized dipolarizability is studied as function of the permittivity and the shape of the surface of the particle. For nonsymmetric particles, the quantity under interest is the average of the three polarizability dyadic eigenvalues. The normalized polarizability, although different for different shapes, has certain universal characteristics independent of the inclusion form. The canonical shapes (sphere, spheroids, ellipsoids, regular polyhedra, circular cylinder, semisphere, double sphere) are studied as well as the correlation of surface parameters with salient polarizability properties. These geometrical and surface parameters are essential in the material modeling problems in the nanoscale.

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