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
Materias:	circular cylinder inflow turbulence PANS CFD Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
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
_version_	1718411651817930752

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

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