Results 11 to 20 of about 91 (81)

Implicit large eddy simulation of ship airwakes [PDF]

open access: yesThe Aeronautical Journal, 2010
AbstractImplicit large eddy simulations (ILES) of two different Royal Navy ships have been conducted as part of the UK Ship/Air Interface Frame-work project using a recently developed very high order accuracy numerical method. Time-accurate CFD data for fourteen flow angles was produced to incorporate into flight simulators for definition of safe ...
Thornber, Ben   +2 more
openaire   +2 more sources

Numerical investigation of the unsteady coupling airflow impact of a full-scale warship with a helicopter during shipboard landing

open access: yesEngineering Applications of Computational Fluid Mechanics, 2020
In this paper, a comprehensive computational modeling study of the unsteady aerodynamic environment around a warship with a helicopter is performed.
Yu Lu   +5 more
doaj   +1 more source

Entropy-based detached-eddy simulation of the airwake over a simple frigate shape

open access: yesAdvances in Mechanical Engineering, 2015
The wind past the ship superstructure produces an unsteady turbulent airwake which has a significant effect on aircraft performance and consequently pilot workload during ship landing process.
Zhao Rui   +3 more
doaj   +1 more source

Impact Anlysis of Bow Flap on LHA-1 Ship Airwake

open access: yesMATEC Web of Conferences, 2018
The sharp 90°corner of bow found on American Tarawa class general amphibious assault ship LHA-1 will produce large separated region in the airwake over the ship, and the turbulence in the separation region seriously affects the operation safety of the ...
Wang Jinling   +3 more
doaj   +1 more source

Ship Airwakes in Waves and Motions and Effects on Helicopter Operation

open access: yesComputers & Fluids, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dooley, Gregory   +3 more
openaire   +2 more sources

Airwake Characteristics of NATO-Generic Destroyer: A Numerical Study [PDF]

open access: yesJournal of Applied Fluid Mechanics
This paper presents a numerical investigation of the air wake around a generic surface combatant ship called NATO-Generic Destroyer (NATO-GD). Naval surface combatants with flight decks must be designed taking aerodynamic concerns into account.
S. Sari, A. Dogrul, S. Bayraktar
doaj   +1 more source

An Active Flow Control over the Ship Deck for Helicopter Shipboard Operations

open access: yesAerospace
This paper presents an active flow control of ship airwake over the deck to improve the safety of helicopter shipboard operations in various angles of wind over deck (WOD).
Yi Ye, Renliang Chen, Honglei Ji
doaj   +1 more source

An investigation of coupling ship/rotor flowfield using steady and unsteady rotor methods

open access: yesEngineering Applications of Computational Fluid Mechanics, 2017
A coupling numerical methodology has been developed using the Navier–Stokes solver for ship/rotor flowfield simulation during the helicopter shipboard launch.
Yongjie Shi, Yi Xu, Kun Zong, Guohua Xu
doaj   +1 more source

Study of Flow Control Device For Ship Airwakes

open access: yes, 2021
Nowadays combined operation of a ship and helicopter is ubiquitous in every naval organization. The operation of a helicopter onto smaller naval ships over the sea is a challenging task and results into very complex flow phenomena due to the presence of ship air wakes, strong velocity gradients coupled with widely varying turbulence length scales. This
openaire   +1 more source

NUMERICAL INVESTIGATION OF SHIP AIRWAKES INTERACTION WITH HELICOPETR FUSELAGE

open access: yes, 2021
In recent years, ship helicopter combined operation strengthens the naval forces across the globe. However, the launch and recovery of a helicopter from the flight deck of a ship can be a formidable task for the experienced test pilot. This difficulty arises due to several harsh environmental conditions like ship’s airwake, wind-over-deck (WOD ...
Shrish Shukla, G. Mulani
openaire   +1 more source

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