Results 81 to 90 of about 525 (130)
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Effect of ship motion on ship airwake aerodynamics
2020The effects of ship motion on the flow field over the deck of the ONR Tumblehome geometry were investigated experimentally. Characterization of the flow field is relevant in the context of safe aircraft operation in the wake region and to provide an accurate prediction of aircraft air-loads in simulators for pilots, and to provide a validation data set
Austin Krebill +5 more
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Quantifying uncertainty in turbulence resolving ship airwake simulations
Ocean Engineering, 2021Abstract High fidelity computational fluid dynamics simulations of ship airwakes are often performed with time accurate, turbulence resolving methods, such as large eddy simulation or detached eddy simulation. In our review of the literature we find that the finite sample error in the results of these simulations is rarely expressed in terms of ...
Daniel Linton, Ben Thornber
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Airwake simulations on an LPD 17 ship
15th AIAA Computational Fluid Dynamics Conference, 2001The flow over the San Antonio class LPD 17 ship is simulated using Computational Fluid Dynamics (CFD) and parallel computers. Both steady-state and time-accurate results are presented for two yaw cases. The computations are done for inviscid flow with no turbulence modeling.
Anupam Sharma, Lyle Long
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Computational Fluid Dynamics Simulations of Ship Airwake
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2005Computational fluid dynamics (CFD) simulations of ship airwakes are discussed in this article. CFD is used to simulate the airwakes of landing helicopter assault (LHA) and landing platform dock-17 (LPD-17) classes of ships. The focus is on capturing the massively separated flow from sharp edges of blunt bodies, while ignoring the viscous effects.
N Sezer-Uzol, A Sharma, L N Long
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Computational ship airwake determination to support helicopter-ship dynamic interface assessment
21st AIAA Computational Fluid Dynamics Conference, 2013A highly important aspect of safe sea-based helicopter operation is the establishment of ship-helicopter operational limits for current and future helicopter/ship combinations. The capabilities of Computational Fluid Dynamics for the determination of ship airwakes have been investigated, aiming at complementing existing experimental data acquisition ...
Jacob Van Muijden +3 more
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Grid Generation and Airwake Simulation on Ship
Applied Mechanics and Materials, 2012Dynamic characteristics of flow field on the ship deck are complex. CFD(Computational Fluid Dynamics) results of LHA ship were verified the accuracy of numerical simulation through compared with the experimental data. Three different grids were generated to discuss and analyze the influence of the prismatic layer grid.
Chang Meng Liu, Ye Gao
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An investigation of ship airwakes using Detached-Eddy Simulation
Computers & Fluids, 2010zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Forrest, James S., Owen, Ieuan
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Numerical Modeling of Coupled VSTOL-Ship Airwake Flowfields
Volume 2, Parts A and B, 2004Validation of CRUNCH CFD® for problems of relevance to modeling coupled VSTOL-Ship Airwake flow fields is presented. The basic numerical framework consists of an edge based multi-element unstructured Navier-Stokes solver. The governing equations are solved using an upwind biased MUSCL scheme and an implicit scheme is used for time marching.
S. Arunajatesan, J. Shipman, N. Sinha
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A computational study of unsteady ship airwake
40th AIAA Aerospace Sciences Meeting & Exhibit, 2002Abstract : The superstructure, deck, and other features of large ships produce large separated regions in the airflow over the ship and a variety of vortex flows generated mainly by edges in the geometry. These features are of importance for aircraft operations on and around these ships.
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Velocity Measurements in A Ship Airwake With Crosswind
42nd AIAA Fluid Dynamics Conference and Exhibit, 2012In situ air velocity measurements in the near wake of a Navy training ship are presented for an inflow of 15 to starboard. This data is required for the validation of ship airwake simulations, which are used to determine the launch and recovery envelopes for shipborne rotorcraft and for use in piloted flight simulations.
Cody Brownell +3 more
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