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Experimental study of the flow turbulent structure in a cell of a lattice matrix

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Thermophysics and Aeromechanics Aims and scope

Abstract

The experimental results on the turbulent flow structure in a lattice matrix cell, which is a region between intersecting ribs on the opposite walls of a flat channel, are presented. The angle between the ribs was 2β = 60°, 90° and 120°; the Reynolds number calculated from the average velocity and hydraulic diameter of the channel was varied in the range Re = (1–7)·104. The aerodynamic characteristics of the flow inside a lattice matrix cell placed in a rectangular channel with a cross section of 20×150 mm and a length of 400 mm were measured using a two-component laser Doppler anemometer (LDA). The flow structure was studied in individual cells of 15×15 mm, formed by crossing ribs on the opposite channel walls. The complex three-dimensional structure of the flow in the matrix cells and strong turbulence of the flow in the near-wall regions are shown. The installation of ribs leads to a significant increase in hydraulic losses, especially at large crossing angles.

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Authors and Affiliations

  1. Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia

    A. V. Zolotukhin, I. A. Chokhar & V. I. Terekhov

  2. Novosibirsk State Technical University, Novosibirsk, Russia

    A. V. Zolotukhin & V. I. Terekhov

Authors
  1. A. V. Zolotukhin
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  2. I. A. Chokhar
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  3. V. I. Terekhov
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Correspondence to A. V. Zolotukhin.

Additional information

The work was financially supported by the Ministry of Science and Higher Education of the Russian Federation (Megagrant No. 075-15-2021-575).

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Zolotukhin, A.V., Chokhar, I.A. & Terekhov, V.I. Experimental study of the flow turbulent structure in a cell of a lattice matrix. Thermophys. Aeromech. 29, 1013–1020 (2022). https://doi.org/10.1134/S0869864322060221

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  • DOI: https://doi.org/10.1134/S0869864322060221

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