Registered Data

[CT140]

[02253] Water wave scattering by a marine structure consisting of an array of compound porous cylinders

  • Session Date & Time : 3E (Aug.23, 17:40-19:20)
  • Type : Contributed Talk
  • Abstract : In this work we will study the water wave scattering by a marine structure consisting of several circular-shaped vertical cylinders surrounded by porous walls with a water region in between the inner cylinder and the wall. Each of these individual cylinders gets added protection from the harmful effect of waves due to the presence of porous walls which act as wave absorbers. Additionally, those annular regions of each of the compound porous cylinders can be utilized for artificial floating plant fields or aquaculture farms. The wave interaction and its effects on such a structure will be examined through numerical investigations. Under the assumption of linear wave theory, a semi-analytical model will developed to address the associated wave diffraction problem by applying the eigenfunction expansion approach. The principal focus lies in locating the optimum geometrical configurations for which the wave forces acting on the structure are minimal along a given wave direction in the frequency domain.
  • Classification : 76B15, 31A25
  • Author(s) :
    • Sunanda Saha (Vellore Institute of Technology)
    • Swaroop Nandan Bora (Indian Institute of Technology Guwahati)

[02347] Reduction of High Wave Load on a Sea Wall by an Elastic Plate and a Porous Structure

  • Session Date & Time : 3E (Aug.23, 17:40-19:20)
  • Type : Contributed Talk
  • Abstract : The present study investigates the wave impact on a sea wall in the presence of an elastic plate and a finite-width porous structure within the linearized water wave theory framework. By employing eigenfunction expansion, a system of an algebraic equation is obtained and solved. The force, reflection and dissipation coefficients are plotted through graphs to investigate the effect of different system parameters.
  • Classification : 76B15
  • Author(s) :
    • GAGAN SAHOO (IIT ROPAR)
    • SUBASH CHANDRA MARTHA (IIT Ropar)
    • SOFIA SINGLA (IIIT UNA, UNA)

[02407] Scattering of water waves by two horizontal porous plates over a pair of trenches

  • Session Date & Time : 3E (Aug.23, 17:40-19:20)
  • Type : Contributed Talk
  • Abstract : The scattering of water waves by two non-uniform horizontal porous plates in the presence of a pair of trenches is modeled using Darcy’s law for flow past a porous plate. The eigenfunction expansions in conjunction with the matching conditions gives rise to an overdetermined system of linear equations, which is solved to obtain the numerical values of physical quantities such as reflection, transmission, dissipation coefficients and force. Different graphs are plotted to visualize the effect of different system parameters. This study highlights two horizontal porous plates over uneven bottom topography will play a vital role in constructing an effective breakwater reducing high wave impact.
  • Classification : 76B15
  • Author(s) :
    • Sunita Choudhary (Indian Institute Technology, Ropar)
    • S. C. Martha (Indian Institute Technology, Ropar)

[00665] Estimating pressure distribution on a surface via electrical sensing skin

  • Session Date & Time : 3E (Aug.23, 17:40-19:20)
  • Type : Contributed Talk
  • Abstract : Sensing skins allow for monitoring of a surface by electrically imaging a conductive layer on an object. One example is fracture detection of concrete elements by imaging a conductive paint layer. In this talk, we present a way to estimate pressure distribution on a surface by using sensing skin -based techniques.
  • Classification : 78-05, 78-10, 65Nxx, Electrical Impedance Tomography
  • Author(s) :
    • Petri Kuusela (University of Eastern Finland)
    • Moe Pour-Ghaz (North Carolina State University)
    • Aku Seppänen (University of Eastern Finland)

[02432] Dispersion relation reconstruction for 2D Photonic Crystals based on polynomial interpolation

  • Session Date & Time : 3E (Aug.23, 17:40-19:20)
  • Type : Contributed Talk
  • Abstract : A natural way to compute photonic dispersion relation is to restrict the parameters to the edges of the irreducible Brillouin zone (IBZ), which has been formalized as a dangerous simplification. We propose a novel method based on polynomial interpolation to approximate band functions in the whole IBZ. The importance of IBZ interiors, the need to reduce computational cost and our analysis of the regularity of band functions illustrate the necessity and feasibility of our method.
  • Classification : 78M22, 26B30, 32A10, 65M60, 41A10
  • Author(s) :
    • Yueqi Wang (University of Hong Kong)
    • Guanglian Li (University of Hong Kong)