Simulation of the Flow past a Circular Cylinder Using an Unsteady Panel Method

Néstor Ramos García; Hamid Sarlak Chivaee; Søren Juhl Andersen; Jens Nørkær Sørensen

doi:10.1016/j.apm.2016.12.001

Simulation of the Flow past a Circular Cylinder Using an Unsteady Panel Method

Néstor Ramos García, Hamid Sarlak Chivaee, Søren Juhl Andersen, Jens Nørkær Sørensen

Coventry University

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Abstract

In the present work, an in-house UnSteady Double Wake Model (USDWM) is developed for simulating general flow problems behind bodies. The model is presented and used to simulate flows past a circular cylinder at subcritical, supercritical, and transcritical flows. The flow model is a two-dimensional panel method which uses the unsteady double wake technique to model flow separation and its dynamics. In the present work the separation location is obtained from experimental data and fixed in time. The highly unsteady flow field behind the cylinder is analyzed in detail. The results are compared with experiments and Unsteady Reynolds-Averaged Navier Stokes (URANS) simulations and show good agreement in terms of the vortex shedding characteristics, drag, and pressure coefficients for the different flow regimes.

Original language	English
Journal	Applied Mathematical Modelling
Volume	44
Pages (from-to)	206-222
ISSN	0307-904X
DOIs	https://doi.org/10.1016/j.apm.2016.12.001
Publication status	Published - 2017

Keywords

Circular cylinder
Unsteady flow
Panel method
Vortex method
URANS

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title = "Simulation of the Flow past a Circular Cylinder Using an Unsteady Panel Method",

abstract = "In the present work, an in-house UnSteady Double Wake Model (USDWM) is developed for simulating general flow problems behind bodies. The model is presented and used to simulate flows past a circular cylinder at subcritical, supercritical, and transcritical flows. The flow model is a two-dimensional panel method which uses the unsteady double wake technique to model flow separation and its dynamics. In the present work the separation location is obtained from experimental data and fixed in time. The highly unsteady flow field behind the cylinder is analyzed in detail. The results are compared with experiments and Unsteady Reynolds-Averaged Navier Stokes (URANS) simulations and show good agreement in terms of the vortex shedding characteristics, drag, and pressure coefficients for the different flow regimes.",

keywords = "Circular cylinder, Unsteady flow, Panel method, Vortex method, URANS",

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doi = "10.1016/j.apm.2016.12.001",

language = "English",

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pages = "206--222",

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T1 - Simulation of the Flow past a Circular Cylinder Using an Unsteady Panel Method

AU - Ramos García, Néstor

AU - Sarlak Chivaee, Hamid

AU - Andersen, Søren Juhl

AU - Sørensen, Jens Nørkær

PY - 2017

Y1 - 2017

N2 - In the present work, an in-house UnSteady Double Wake Model (USDWM) is developed for simulating general flow problems behind bodies. The model is presented and used to simulate flows past a circular cylinder at subcritical, supercritical, and transcritical flows. The flow model is a two-dimensional panel method which uses the unsteady double wake technique to model flow separation and its dynamics. In the present work the separation location is obtained from experimental data and fixed in time. The highly unsteady flow field behind the cylinder is analyzed in detail. The results are compared with experiments and Unsteady Reynolds-Averaged Navier Stokes (URANS) simulations and show good agreement in terms of the vortex shedding characteristics, drag, and pressure coefficients for the different flow regimes.

AB - In the present work, an in-house UnSteady Double Wake Model (USDWM) is developed for simulating general flow problems behind bodies. The model is presented and used to simulate flows past a circular cylinder at subcritical, supercritical, and transcritical flows. The flow model is a two-dimensional panel method which uses the unsteady double wake technique to model flow separation and its dynamics. In the present work the separation location is obtained from experimental data and fixed in time. The highly unsteady flow field behind the cylinder is analyzed in detail. The results are compared with experiments and Unsteady Reynolds-Averaged Navier Stokes (URANS) simulations and show good agreement in terms of the vortex shedding characteristics, drag, and pressure coefficients for the different flow regimes.

KW - Circular cylinder

KW - Unsteady flow

KW - Panel method

KW - Vortex method

KW - URANS

U2 - 10.1016/j.apm.2016.12.001

DO - 10.1016/j.apm.2016.12.001

M3 - Journal article

SN - 0307-904X

VL - 44

SP - 206

EP - 222

JO - Applied Mathematical Modelling

JF - Applied Mathematical Modelling

ER -

Simulation of the Flow past a Circular Cylinder Using an Unsteady Panel Method

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