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HSSL - EREA Project Benchmark Analysis of A Frigate's Flow Field Using A RANS Approach

McMahon, Paul (2018) HSSL - EREA Project Benchmark Analysis of A Frigate's Flow Field Using A RANS Approach. Other. DLR-Interner Bericht. 2018-239, 59 S.

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Abstract

Helicopter ship platform landing demands an intense workload from the pilot as they negotiate the ship's unsteady airwake coupled with the natural oscillation induced by sea motion. This report comprises of a benchmark study in which numerical methods are used to evaluate the flow field induced by a generic frigate configuration. The Reynolds Averaged Navier Stokes equations (RANS) combined with the Menter SST turbulence model are applied alongside preconditioning and an atmospheric boundary layer to evaluate flow conditions at two reference velocities for six wind over deck angles (WOD). The solutions were validated using experimental dara provided by ONERA. Direct comparison as well as quantitative analysis was performed using PIV measurements in the landing deck's symmetry plane highlighting an effectiveness at predicting general flow field characteristics at low WOD angles. Similarly, the computed surface pressure distribution across the landing deck is evaluated alongside experimental pressure recordings, further highlighting the computational ability and limitations depending on WOD angle.

Item URL in elib:https://elib.dlr.de/126397/
Document Type:Monograph (DLR-Interner Bericht, Other)
Title:HSSL - EREA Project Benchmark Analysis of A Frigate's Flow Field Using A RANS Approach
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
McMahon, PaulUNSPECIFIEDUNSPECIFIED
Date:2018
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:59
Status:Published
Keywords:CFD, Frigate, Airwake, Ship, Navier-stokes, landing platform dock
Institution:Insitut für Aerodynamik und Strömungstechnik
Department:Hubschrauber-Abteilung
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, BS
Deposited By: Seyfried, Beate
Deposited On:11 Feb 2019 11:20
Last Modified:11 Feb 2019 11:20

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