Scale-Resolving Simulations of a Circular Cylinder Subjected to Low Mach Number Turbulent Inflow

Inflow turbulence is relevant for many engineering applications relating to noise generation, including aircraft wings, landing gears, and non-cavitating marine propellers. While modelling of this phenomenon is well-established for higher Mach number aerospace problems, lower Mach number application...

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Autores principales: Artur K. Lidtke, Maarten Klapwijk, Thomas Lloyd
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
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CFD
Acceso en línea:https://doaj.org/article/e1cd9c90e6f046a3990d31c39bf5777c
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spelling oai:doaj.org-article:e1cd9c90e6f046a3990d31c39bf5777c2021-11-25T18:04:58ZScale-Resolving Simulations of a Circular Cylinder Subjected to Low Mach Number Turbulent Inflow10.3390/jmse91112742077-1312https://doaj.org/article/e1cd9c90e6f046a3990d31c39bf5777c2021-11-01T00:00:00Zhttps://www.mdpi.com/2077-1312/9/11/1274https://doaj.org/toc/2077-1312Inflow turbulence is relevant for many engineering applications relating to noise generation, including aircraft wings, landing gears, and non-cavitating marine propellers. While modelling of this phenomenon is well-established for higher Mach number aerospace problems, lower Mach number applications, which include marine propellers, still lack validated numerical tools. For this purpose, simplified cases for which extensive measurement data are available can be used. This paper investigates the effect of inflow turbulence on a circular cylinder at a Reynolds number of 14,700, a Mach number of 0.029, and with inflow turbulence intensities ranging between 0% and 22%. In the present work focus is put on the hydrodynamics aspect, with the aim of addressing radiated noise in a later study. The flow is simulated using the partially averaged Navier Stokes equations, with turbulence inserted using a synthetic inflow turbulence generator. Results show that the proposed method can successfully replicate nearfield pressure variations and relevant flow features in the wake of the body. In agreement with the literature, increasing inflow turbulence intensity adds broadband frequency content to all the presented fluctuating flow quantities. In addition, the applied variations in inflow turbulence intensity result in a major shift in flow dynamics around a turbulence intensity of 15%, when the dominant effect of von Kármán vortices on the dominant flow dynamics becomes superseded by freestream turbulence.Artur K. LidtkeMaarten KlapwijkThomas LloydMDPI AGarticlecircular cylinderinflow turbulencePANSCFDNaval architecture. Shipbuilding. Marine engineeringVM1-989OceanographyGC1-1581ENJournal of Marine Science and Engineering, Vol 9, Iss 1274, p 1274 (2021)
institution DOAJ
collection DOAJ
language EN
topic circular cylinder
inflow turbulence
PANS
CFD
Naval architecture. Shipbuilding. Marine engineering
VM1-989
Oceanography
GC1-1581
spellingShingle circular cylinder
inflow turbulence
PANS
CFD
Naval architecture. Shipbuilding. Marine engineering
VM1-989
Oceanography
GC1-1581
Artur K. Lidtke
Maarten Klapwijk
Thomas Lloyd
Scale-Resolving Simulations of a Circular Cylinder Subjected to Low Mach Number Turbulent Inflow
description Inflow turbulence is relevant for many engineering applications relating to noise generation, including aircraft wings, landing gears, and non-cavitating marine propellers. While modelling of this phenomenon is well-established for higher Mach number aerospace problems, lower Mach number applications, which include marine propellers, still lack validated numerical tools. For this purpose, simplified cases for which extensive measurement data are available can be used. This paper investigates the effect of inflow turbulence on a circular cylinder at a Reynolds number of 14,700, a Mach number of 0.029, and with inflow turbulence intensities ranging between 0% and 22%. In the present work focus is put on the hydrodynamics aspect, with the aim of addressing radiated noise in a later study. The flow is simulated using the partially averaged Navier Stokes equations, with turbulence inserted using a synthetic inflow turbulence generator. Results show that the proposed method can successfully replicate nearfield pressure variations and relevant flow features in the wake of the body. In agreement with the literature, increasing inflow turbulence intensity adds broadband frequency content to all the presented fluctuating flow quantities. In addition, the applied variations in inflow turbulence intensity result in a major shift in flow dynamics around a turbulence intensity of 15%, when the dominant effect of von Kármán vortices on the dominant flow dynamics becomes superseded by freestream turbulence.
format article
author Artur K. Lidtke
Maarten Klapwijk
Thomas Lloyd
author_facet Artur K. Lidtke
Maarten Klapwijk
Thomas Lloyd
author_sort Artur K. Lidtke
title Scale-Resolving Simulations of a Circular Cylinder Subjected to Low Mach Number Turbulent Inflow
title_short Scale-Resolving Simulations of a Circular Cylinder Subjected to Low Mach Number Turbulent Inflow
title_full Scale-Resolving Simulations of a Circular Cylinder Subjected to Low Mach Number Turbulent Inflow
title_fullStr Scale-Resolving Simulations of a Circular Cylinder Subjected to Low Mach Number Turbulent Inflow
title_full_unstemmed Scale-Resolving Simulations of a Circular Cylinder Subjected to Low Mach Number Turbulent Inflow
title_sort scale-resolving simulations of a circular cylinder subjected to low mach number turbulent inflow
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/e1cd9c90e6f046a3990d31c39bf5777c
work_keys_str_mv AT arturklidtke scaleresolvingsimulationsofacircularcylindersubjectedtolowmachnumberturbulentinflow
AT maartenklapwijk scaleresolvingsimulationsofacircularcylindersubjectedtolowmachnumberturbulentinflow
AT thomaslloyd scaleresolvingsimulationsofacircularcylindersubjectedtolowmachnumberturbulentinflow
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