Comparison of characteristics of flow around a sphere with trip wire using different turbulence modeling approaches

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The flow characteristics of spherical bodies, arising in a variety of important engineering and environmental problems, range from laminar to turbulent flow. Turbulent flows are predominantly studied using the models based on Reynoldsaveraged Navier-Stokes (RANS) equations.Especially, in case of flows around bluff bodies RANS models have limitations in capturing flow separation and other characteristic flow properties. Hence,the use of high-fidelity turbulent models is required to investigate the physics of these types of flow in detail. This study aims to compare and analyze the results of an incompressible turbulent flow around a sphere with additional geometric detail, like a trip wire, using different simulation techniques: Large Eddy Simulation (LES) and RANS. Modeling bodies with different characteristic geometric scales may require high-performance computing (HPC) resources due to the need to include accurate spatial and temporal resolution using unstructured mesh generation. This may be under circumstances additional criterion for decision which simulation approach is to be adopted.

Original languageEnglish (US)
Title of host publicationAdvances in Aerospace Technology
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791858349
DOIs
StatePublished - Jan 1 2017
EventASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017 - Tampa, United States
Duration: Nov 3 2017Nov 9 2017

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume1

Other

OtherASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017
CountryUnited States
CityTampa
Period11/3/1711/9/17

Keywords

  • Aerodynamics
  • Drag
  • Sphere
  • Turbulence

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Koric, S., Vellakal, M., Taha, A., & Torlak, M. (2017). Comparison of characteristics of flow around a sphere with trip wire using different turbulence modeling approaches. In Advances in Aerospace Technology (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 1). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2017-71667