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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2021
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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a turbulence intensity of 15%, when the dominant effect of von Kármán vortices on the dominant flow dynamics becomes superseded by freestream turbulence.Artur K. LidtkeMaarten KlapwijkThomas LloydMDPI AGarticlecircular cylinderinflow turbulencePANSCFDNaval architecture.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) |
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circular cylinder inflow turbulence PANS CFD Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
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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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1718411651817930752 |