What question did this study set out to answer?

To simulate and characterize secondary and tertiary vortex dynamics in laminar flow past an impulsively started circular cylinder across a broad range of Reynolds numbers.

May 1, 2021Physics of Fluids

A comprehensive study of secondary and tertiary vortex phenomena of flow past a circular cylinder: A Cartesian grid approach

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Authors

PKPankaj KumarIndian Institute of Technology Guwahati JKJiten C. KalitaIndian Institute of Technology Guwahati

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Implication

Computational study reveals secondary and tertiary vortex phenomena in flow past a circular cylinder, highlighting the accuracy of a direct Cartesian grid approach.

Key Points

To simulate and characterize secondary and tertiary vortex dynamics in laminar flow past an impulsively started circular cylinder across a broad range of Reynolds numbers.
Discretized the transient Navier–Stokes equations using a second-order accurate compact finite difference scheme in space and time on a nonuniform Cartesian grid.
Aligned grid nodes directly with the cylinder boundary, eliminating the requirement for immersed interface methods.
Executed numerical simulations across the laminar regime for Reynolds numbers spanning 5 ≤ Re ≤ 10,000, including periodic von Kármán vortex shedding.
Resolved fine-scale secondary and tertiary vortex structures, capturing α, β, sub-α, and sub-β phenomena across Re = 5 to 10,000.
Obtained close agreement between computational results and existing experimental and numerical benchmarks across all tested flow conditions.
Provided the first documented tabular data detailing the early developmental stages of flow for Re ≥ 700.

Cite This Study

Kumar et al. (2021) studied this question.

synapsesocial.com/papers/6a987a483b58d06bb8581cf1 https://doi.org/10.1063/5.0042603

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Implication

Computational study reveals secondary and tertiary vortex phenomena in flow past a circular cylinder, highlighting the accuracy of a direct Cartesian grid approach.

A comprehensive study of secondary and tertiary vortex phenomena of flow past a circular cylinder: A Cartesian grid approach

Discussion

Member takes

Implication

Key Points

Cite This Study

A comprehensive study of secondary and tertiary vortex phenomena of flow past a circular cylinder: A Cartesian grid approach

Discussion

Member takes

Implication

Key Points

Cite This Study

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