Unstructured Reynolds Stress Model solutions for turbulent flow around a Bell 214ST fuselage

Emre Alpman, Lyle Norman Long

Research output: Contribution to journalConference article

Abstract

Numerical simulation of high Reynolds number turbulent flow around a Bell 214ST helicopter fuselage is performed using an unstructured mesh. The computations include an application of Reynolds Stress Model (RSM), which consists of coupling the Reynolds transport equations with the Favre averaged Navier-Stokes Equations. The resulting system of 12 coupled, non-linear partial differential equations is solved using PUMA_RSM which is an in-house unstructured grid computational fluid dynamics code written in ANSI C++. In order to reduce the CPU time and memory requirements, parallel processing is applied with the MPI (Message Passing Interface) communication standard. Solutions are performed for an isolated fuselage at three different flow conditions and helicopter with rotors modeled using momentum theory in forward flight. Predicted pressure and drag force correlate well with the wind tunnel data and RSM is proved to be useful for turbulent flow around such a complex geometry.

Original languageEnglish (US)
Pages (from-to)370-383
Number of pages14
JournalAnnual Forum Proceedings - AHS International
Volume1
StatePublished - Dec 1 2005
Event61st Annual Forum Proceedings - AHS International - Grapevine, TX, United States
Duration: Jun 1 2005Jun 3 2005

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Fuselages
Turbulent flow
Helicopters
Message passing
Navier Stokes equations
Partial differential equations
Wind tunnels
Program processors
Drag
Momentum
Computational fluid dynamics
Reynolds number
Rotors
Data storage equipment
Geometry
Communication
Computer simulation
Processing

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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abstract = "Numerical simulation of high Reynolds number turbulent flow around a Bell 214ST helicopter fuselage is performed using an unstructured mesh. The computations include an application of Reynolds Stress Model (RSM), which consists of coupling the Reynolds transport equations with the Favre averaged Navier-Stokes Equations. The resulting system of 12 coupled, non-linear partial differential equations is solved using PUMA_RSM which is an in-house unstructured grid computational fluid dynamics code written in ANSI C++. In order to reduce the CPU time and memory requirements, parallel processing is applied with the MPI (Message Passing Interface) communication standard. Solutions are performed for an isolated fuselage at three different flow conditions and helicopter with rotors modeled using momentum theory in forward flight. Predicted pressure and drag force correlate well with the wind tunnel data and RSM is proved to be useful for turbulent flow around such a complex geometry.",
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Unstructured Reynolds Stress Model solutions for turbulent flow around a Bell 214ST fuselage. / Alpman, Emre; Long, Lyle Norman.

In: Annual Forum Proceedings - AHS International, Vol. 1, 01.12.2005, p. 370-383.

Research output: Contribution to journalConference article

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