Date:
Speaker: Mahmoud Gadalla
When: Thursday, 27 September 2018
Time: 3:00 PM
Where: Room A-133, SISSA main campus, Via Bonomea
Title: Shape Optimization and Reduced Order Models for the
Hydro-acoustic Design of Marine Propellers.
Abstract:
In the naval field it is of particular interest to find solutions for
the reduction of hydro-acoustic noise due to the operation of marine
propellers, in order to improve both on-board comfort and environmental
impact during navigation. In this regard, the PRELICA project "Advanced
Methodologies for Hydro-acoustic Design of Naval Propulsion" aims at
reducing such emissions through an (i) accurate reconstruction of the
fluid dynamic fields, (ii) efficient prediction of the radiated noise at
all frequencies, (iii) optimal shape design of the marine propellers.
In this seminar, and after a brief introduction to the project, we
present the tools developed for the parametric shape construction of
marine propellers, as well as the conducted analysis using the Active
Subspaces property to determine the influential geometrical parameters
on the hydro-acoustic performance. After that we address the efforts
done in the reduced order fashion, so as to reconstruct and predict the
fluid dynamic and acoustic data through various models, principally via
the Dynamic Mode Decomposition and the Proper Orthogonal Decomposition
with Interpolation and/or Galerkin projection. A final discussion
towards the current findings and the future plans and perspectives are
to be addressed.
Category: