Multi-Scale Grid Geometries for Internal Flow Turbulence Generation

Master's Thesis

Abstract

The results presented in this thesis describe multi-scale grid generated turbulence in an internal flow setting. Multi-scale grids offer benefits found in both passive and active grids – they can be used to generate high turbulence intensities, but do not require active control. Various grid geometries found in literature as well as new geometries were created. Experiments were performed at the Hessert Aerospace Lab. The test set-up consisted of flow between two flat plates separated by a distance of 8.73 cm. Single- and dual-wire hotwire probes were used to acquire time series of velocity downstream of the grids. Multi-scale grid geometries commonly found in literature were tested in the internal flow regime to determine which geometries generated high turbulence intensities that were also spatially homogeneous. New geometries were created based on these results, and finally turbulence created using two of the grids was studied extensively using a dual-wire hotwire probe.

Attributes

Attribute NameValues
URN
  • etd-06232014-164253

Author Piyush Milind Ranade
Advisor Scott Morris
Contributor Scott Morris, Committee Chair
Contributor Stanislas Gordeyev, Committee Member
Contributor Eric Jumper, Committee Member
Degree Level Master's Thesis
Degree Discipline Aerospace and Mechanical Engineering
Degree Name MSAE
Defense Date
  • 2014-05-27

Submission Date 2014-06-23
Country
  • United States of America

Subject
  • turbulence

  • multi-scale grid

Publisher
  • University of Notre Dame

Language
  • English

Record Visibility Public
Embargo Release Date
  • 2015-07-24

Content License
  • All rights reserved

Departments and Units

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