Turbulence and Complex Flow Phenomena in Axial Turbomachines

Abstract

The objective of this project is to measure the unsteady flow in axial turbomachines and use the data to address turbulence and complex flow modeling issues. The measurements are performed in an optically index matched facility, which allows unobstructed 2-D and Stereo PIV measurements within an entire stage. The data provide unprecedented insight on blade-blade, blade-wake, wake-boundary layer and wake-wake interactions in the hub, mid-span and tip regions. Turbulence and unsteady flow phenomena are investigated at three levels: Passage-averaged steady RANS, unsteady RANS, and LES. Data analysis provides the distributions of deterministic Reynolds and sub-grid stresses, deterministic and turbulent kinetic energy, turbulence production and dissipation, as well as energy exchange between the average passage flow, the turbulence at different scales, and the deterministic energy.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 18, 2004
Accession Number
ADA425217

Entities

People

  • Charles Meneveau
  • Joseph Katz

Organizations

  • Johns Hopkins University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Energy
  • Energy Transfer
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Heat Transfer
  • Hydrodynamics
  • Measurement
  • Refractive Index
  • Three Dimensional
  • Two Dimensional
  • Unsteady Flow
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Computational Fluid Dynamics (CFD)