Computational Fluid Dynamics Simulations of Ship Airwake with a Hovering Helicopter Rotor

Date

2016-07-11

Author

Orbay Akcengiz, Ezgi
Sezer Uzol, Nilay

Metadata

Show full item record

Item Usage Stats

155
views

0
downloads

URI

https://hdl.handle.net/11511/77127

Collections

Unclassified, Article

Suggestions

OpenMETU
Core

Computational fluid dynamics simulations of ship airwake with a hovering helicopter rotor Orbay, Ezgi; Uzol, Oğuz; Sezer Uzol, Nilay; Department of Aerospace Engineering (2016) In this thesis, Computational Fluid Dynamic simulations of ship airwake for a simple ship geometry are performed for the horizontal and inclined deck configurations and also with and without the helicopter rotor over the deck. An actuator disk model is used for the CFD simulations of a rotor model hovering over the flight deck. All of the computations are performed by using a commercial finite volume CFD flow solver. The unstructured tetrahedral grids are generated in the computational domain including ship...
Computational fluid dynamics simulations of ship airwake with a hovering helicopter rotor Orbay, Ezgi; Sezer Uzol, Nilay (2016-01-01) Computational Fluid Dynamic simulations of ship airwake are performed together with an actuator disk model for a rotor model hovering over the flight deck. The flow around Simple Frigate Shape 2 (SFS2) is computed in steady-state and unsteady conditions by solving RANS and hybrid RANS/LES equations. The unstructured grid is generated for the ship geometry. Also, an actuator disk is added into the model to investigate downwash effect of rotor on ship airwake and interaction of rotor and ship airwake.
Computational fluid dynamics simulations of ship airwake Sezer Uzol, Nilay; Sharma, A.; Long, L.N. (2005-10-01) Computational 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. A parallel, finite-volume flow solver is used with unstructured grids on full-scale ship models for the CFD calculations. Both steady-state and time-accurate resul...
Computational fluid dynamics modelling of store separation using grid method Demir, Görkem; Alemdaroğlu, Hüseyin Nafiz; Department of Aerospace Engineering (2017) In this study, two different wind tunnel techniques, captive trajectory and the grid surveying method, were implemented to computational fluid dynamics (CFD) and used to calculate the trajectory of a store. The main purpose of this thesis is to demonsrate that grid method is an alternative method to those already used as it provides flexibility to store separation problems and can be used during the design process. EGLIN test geometry was used to validate the analyses results because it provided existing wi...
Computational fluid dynamics analysis of store seperation Demir, H. Özgür; Alemdaroğlu, Hüseyin Nafiz; Department of Aerospace Engineering (2004) In this thesis, store separation from two different configurations are solved using computational methods. Two different commercially available CFD codes; CFD-FASTRAN, an implicit Euler solver, and an unsteady panel method solver USAERO, coupled with integral boundary layer solution procedure are used for the present computations. The computational trajectory results are validated against the available experimental data of a generic wing-pylon-store configuration at Mach 0.95. Major trends of the separation...

Citation Formats

E. Orbay Akcengiz and N. Sezer Uzol, “Computational Fluid Dynamics Simulations of Ship Airwake with a Hovering Helicopter Rotor,” 2016, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/77127.