0
research-article

Assessment of CFD Capabilities for the Prediction of Three Dimensional Separated Flows: the DELFT 372 Catamaran in Static Drift Conditions

[+] Author and Article Information
Riccardo Broglia

National Research Council, Institute of Marine Engineering (CNR-INM), (Formerly INSEAN), Rome, Italy
riccardo.broglia@cnr.it

Stefano Zaghi

National Research Council, Institute of Marine Engineering (CNR-INM), (Formerly INSEAN), Rome, Italy
stefano.zaghi@cnr.it

Emilio F. Campana

National Research Council, Institute of Marine Engineering (CNR-INM), (Formerly INSEAN), Rome, Italy
emiliofortunato.campana@cnr.it

Timur Dogan, Hamid Sadat-Hosseini

Iowa Institute of Hydraulic Research (IIHR), Hydroscience and Engineering, University of Iowa
timur-dogan@uiowa.edu

Frederick Stern

Iowa Institute of Hydraulic Research (IIHR), Hydroscience and Engineering, University of Iowa
timur-dogan@uiowa.edu; hamid-sadathosseini@uiowa.edu; frederick-stern@uiowa.edu

H. Sadat-Hosseini

Mechanical and Energy Engineering Department, University of North Texas
hamid.sadat@unt.edu

Patrick Queutey

Fluid Mechanics Laboratory, Centre National de la Recherche Scientifique/Ecole Centrale Nantes (CNRS/ECN), France
patrick.queutey@ec-nantes.fr

Michel Visonneau

Fluid Mechanics Laboratory, Centre National de la Recherche Scientifique/Ecole Centrale Nantes (CNRS/ECN), Nantes, France
michel.visonneau@ec-nantes.fr

Evgeni Milanov

Bulgarian Ship Hydrodynamics Centre (BSHC), Varna, Bulgaria
e.milanov@bshc.bg

1Corresponding author.

ASME doi:10.1115/1.4042752 History: Received April 26, 2018; Revised January 23, 2019

Abstract

In this paper, capabilities of state-of-the-art computational fluid dynamics (CFD) tools in the prediction of the flow-field around a multihull catamaran advancing in straight ahead motion at non-zero drift angles are investigated. CFD estimations have been provided by three research institutes by using their in-house codes: CNR-INM using Xnavis, IIHR using CFDShip-Iowa and CNRS/ECN using ISIS. These allowed an in-depth comparison between different methodologies, such as: structured overlapping grids vs unstructured grid; different turbulence models and detached eddy simulations (DES) approaches; level-set (LS) vs volume of fluid (VoF). The activities were pursued within the NATO AVT-183 group "Reliable Prediction of Separated Flow Onset and Progression for Air and Sea Vehicles", aimed to the assessment of CFD predictions of large 3D separated flows. Comparison between estimations is provided for both integral and local quantities, and for wave induced vortices. Validation is reported by comparison against available experimental fluid dynamics (EFD) data. Generally, all the simulations are able to capture the main features of the flow field; grid resolution effects are dominant in the onset phase of coherent structures, turbulence model affects the dynamic of the vortices. Hydrodynamic loads are in agreement between the submissions with standard deviation of about 3.5% for the resistance prediction and about 7% for lateral force and yaw moment estimation. Wave induced vortices are correctly captured by both LS and VoF approaches, even if some differences have been highlighted, LS showing well-defined and long life vortices.

Copyright (c) 2019 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In