Modeling the Dissipation Rate in Rotating Turbulent Flows

Abstract

A variety of modifications to the modeled dissipation rate transport equation that have been proposed during the past two decades to account for rotational strains are examined. The models are subjected to two crucial test cases: the decay of isotropic turbulence in a rotating frame and homogeneous shear flow in a rotating frame. It is demonstrated that these modifications do not yield substantially improved predictions for these two test cases and in many instances give rise to unphysical behavior. An alternative proposal, based on the use of the tensor dissipation rate, is made for the development of improved models.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1990
Accession Number
ADA232079

Entities

People

  • Charles G. Speziale
  • Rishi Raj
  • Thomas B. Gatski

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boltzmann Equation
  • Computational Fluid Dynamics
  • Differential Equations
  • Dissipation
  • Equations
  • Experimental Data
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Kinetic Energy
  • Large Eddy Simulation
  • Shear Flow
  • Simulations
  • Transport Ships
  • Turbulence
  • Turbulent Diffusion
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Systems Analysis and Design