Computer modeling of wave-energy air turbines with the SUPG/PSPG formulation and discontinuity-capturing technique

A. Corsini, F. Rispoli, Tayfun E. Tezduyar

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

We present a computational fluid mechanics technique for modeling of wave-energy air turbines, specifically the Wells turbine. In this type of energy conversion, the wave motion is converted to an oscillating airflow in a duct with the turbine. This is a self-rectifying turbine in the sense that it maintains the same direction of rotation as the airflow changes direction. The blades of the turbine are symmetrical, and here we consider straight and swept blades, both with constant chord. The turbulent flow physics involved in the complex, unsteady flow is governed by nonequilibrium behavior, and we use a stabilized formulation to address the related challenges in the context of RANS modeling. The formulation is based on the streamline-upwind/Petrov-Galerkin and pressure-stabilizing/Petrov-Galerkin methods, supplemented with the DRDJ stabilization. Judicious determination of the stabilization parameters involved is also a part of our computational technique and is described for each component of the stabilized formulation. We compare the numerical performance of the formulation with and without the DRDJ stabilization and present the computational results obtained for the two blade configurations with realistic airflow data.

Original languageEnglish
Article number010910
JournalJournal of Applied Mechanics, Transactions ASME
Volume79
Issue number1
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint

Compressed air motors
turbines
discontinuity
Turbines
formulations
blades
Stabilization
air
stabilization
Computational mechanics
computational mechanics
energy
Fluid mechanics
Galerkin methods
Unsteady flow
Energy conversion
Ducts
fluid mechanics
Turbomachine blades
Turbulent flow

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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