Accession Number : ADA322768

Title :   Computational Modeling of Marine Propulsors.

Descriptive Note : Final rept.,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Merkle, Charles L. ; Feng, Jinzhang

PDF Url : ADA322768

Report Date : MAR 1997

Pagination or Media Count : 9

Abstract : At the start of this research effort, extensive numerical computations with Navier-Stokes equations for marine propulsors were not routinely conducted anywhere. Now with the advent of much improved computer resources, these computations are carried out regularly to study the complex flow fields, to improve existing designs, and to guide new designs. Looking ahead, computational modeling of marine propulsors has turned a new page. More efficient, more reliable and more robust N-S solvers with more physical submodels are needed for a CFD approach to be fully integrated into routine design procedures. Time-accurate N-S computations are needed to predict acoustic noises in a marine propulsion system. Furthermore more advanced turbulence modeling, such as LES, needs to be included in these computations. Nevertheless, computational modeling of marine propulsors has already started to bear fruits for a better and more economical propulsor design.

Descriptors :   *COMPUTATIONAL FLUID DYNAMICS, *FLOW FIELDS, *MARINE PROPULSION, COMPUTERIZED SIMULATION, TURBULENCE, WAKE, GREENS FUNCTIONS, NAVIER STOKES EQUATIONS, TURBOMACHINERY, PROPELLER BLADES, CAVITATION, HYDRODYNAMIC CONTROL SURFACES, HYDROFOILS.

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE