Fundamental Interaction Mechanisms of Roughness-Induced Flows with Surface Textures

Abstract

We report on the specific objectives of the grant which were to use a combination of immersed boundary DNS (at UT) and matched experiments at the KSWT (at TAMU) to (I) obtain a generalized understanding and development of simple models for interaction of vortices with control strips, (II) analyze of the effect of pressure gradients on roughness-induced transition (RIT) mechanisms and evaluate shielding effectiveness over realistic geometries and at high Reynolds numbers and(III) quantify interactions between perturbations introduced by different discrete roughness elements. (IV) The work also examined the generality of RIT mechanisms toother modes of (bypass) transition.

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Document Details

Document Type
Technical Report
Publication Date
Mar 22, 2024
Accession Number
AD1230457

Entities

People

  • David J. Goldstein

Organizations

  • University of Texas at Austin

Tags

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Nuclear Civil Defense.
  • Research Science/Academic Research