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Wake Interactions Around a Pair of Porous Cylinders in a Side-By-Side Arrangement in Channel Flow

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Fluid Mechanics and Fluid Power, Volume 2 (FMFP 2022)

Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

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Abstract

In this study, we have investigated the flow around two side-by-side porous cylinders in a confined channel. The study reports various flow patterns as well as an absolute suppression of the vortex-shedding process at high permeability levels. An unsteady flow at Reynolds number Re = 150 at two different parameters, Darcy number (Da) and gap ratios (s/d) for the ranges of Da = 10–6−10–2 and s/d = 1.5–6, is found to exhibit asymmetric flip-flop and synchronized anti-phase wake patterns. A jet-like flow in the vicinity of cylinders, mainly on the gap side, controls the wake patterns. A jump in the flow characteristics in the intermediate range of Darcy number is also explained by means of backflow phenomena. The velocity profiles on the freestream sides, the gap side, and the surface pressure distribution curve are discussed to give insight into the formation and suppression of wakes. The effects of gap ratios and Darcy number on the drag coefficient are also examined.

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Abbreviations

d:

Diameter of the porous cylinder

dp:

Diameter of the particle constituting the porous body

CD:

Drag coefficient

Cp:

Pressure coefficient

CF:

Forchheimer coefficient

Re:

Reynolds number

Da:

Darcy number

u:

X-component velocity

v:

Y-component velocity

U:

Velocity magnitude

ε:

Porosity

κ:

Permeability

ρ:

Density

µ:

Dynamic viscosity

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Author information

Authors and Affiliations

  1. Department of Chemical Engineering, IIT Roorkee, Roorkee, Uttarakhand, 247667, India

    Saqib Jamshed & Amit Dhiman

Authors
  1. Saqib Jamshed
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  2. Amit Dhiman
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Corresponding author

Correspondence to Saqib Jamshed .

Editor information

Editors and Affiliations

  1. Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India

    Krishna Mohan Singh

  2. Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India

    Sushanta Dutta

  3. Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India

    Sudhakar Subudhi

  4. Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India

    Nikhil Kumar Singh

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Jamshed, S., Dhiman, A. (2024). Wake Interactions Around a Pair of Porous Cylinders in a Side-By-Side Arrangement in Channel Flow. In: Singh, K.M., Dutta, S., Subudhi, S., Singh, N.K. (eds) Fluid Mechanics and Fluid Power, Volume 2. FMFP 2022. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-99-5752-1_29

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  • DOI: https://doi.org/10.1007/978-981-99-5752-1_29

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-99-5751-4

  • Online ISBN: 978-981-99-5752-1

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