Global Transient Growth Mechanisms in High-Speed Flows with Application to the Elliptic Cone

Abstract

Work performed has been a continuation and extension of AFOSR-supported modal global instability research in hypersonic ow on the elliptic cone, initiated during Grant FA8655-12-1-2004 (2012-2015). Four distinct, interrelated paths were followed: (a) local transient growth analysis at several characteristic locations on the cone surface, (b) development and performance of global transient growth analysis on the cone via direct solution of the BiGlobal Singular Value Decomposition (SVD) problem, (c) further development of the nonlinear PSE-3D algorithm, which permits laminar-turbulent transition prediction on account of nonlinear interaction of either modal or non-modal linear disturbances and (d) development of LiGHT, a new massively parallel EVP and SVD solver for prediction of hypersonic transition, the latest version of which has been delivered to AFRL.

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Document Details

Document Type
Technical Report
Publication Date
Jan 29, 2019
Accession Number
AD1077632

Entities

People

  • Vassilios Theofilis

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Control
  • Boundary Layer Flow
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Equations Of Motion
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Fungi
  • Geometry
  • Hydrodynamics
  • Physics Laboratories
  • Three Dimensional
  • Turbulent Mixing

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Mechanics and Fluid Dynamics.
  • Technical Research and Report Writing.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers