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Showing 1 to 9 of 9 for “"Air Cushion"”.
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Numerical Modeling of Air Cushion Vehicle Flexible Seals
Air cushion vehicle flexible seals operate in a complex and chaotic environment dominated by fluid-structure interaction. An efficient means to explore interdependencies between various governing parameters that affect performance is through high fidelity numerical simulation. As previous numerical …
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Numerical Simulation of Surface Effect Ship Air Cushion and Free Surface Interaction
… and feature incompressible water, compressible air, pitch and heave degrees of freedom, and the volume of fluid interface-capturing scheme. The seals are represented with rigid approximations and the air cushion fans are modeled using constant momentum sources. Drag data, cushion pressure data, …
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Innovative decision-making methods for the preliminary design and operations of air-cushion and other marine vehicles
… qualitative techniques. This research focuses on Air Cushion Vehicles since they are the newest type of advanced marine vehicles and their study is considered both tedious and challenging. However, the research also expands to other types of marine vehicles. Both design and operational aspects are …
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MathCAD model for the estimation of cost and main characteristics of air-cushion vehicles in the preliminary design stage
… naval architecture terminology, the term ACV (Air Cushion Vehicle) refers to this category of vehicles, in which a significant portion of the weight (or all the weight) is supported by forces arising from air pressures developed around the craft, as a result of which they hover in close …
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Numerical Simulation of Surface Effect Ship Characteristics and Dynamics
… surface effect ship which is a specific type of air cushion vehicle. The simulation work presented here attempts to replicate the model tests involving a generic surface effect ship and demonstrate the value of numerical simulations in understanding air cushion vehicles. The model tests consist …
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The effect of wing wall geometry and well deck configuration on the stability characteristics of amphibious landing ship dock (LSD) class ships
… efficient operation of LCAC (Landing Craft Air Cushion) and other amphibious assault craft in support of power projection operations. Analysis of the various LSD 49 Class alternative designs, revealed significant variance in the stability limits for each design. These variations appeared to …
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Computational and Experimental Investigation of the Aerodynamics of a W-shaped leading edge reversed delta plan-form wing
… and Landing (V/STOL) capabilities of small aircraft. The main focus of the research was to carry out computational investigations of the flow phenomena associated with this unique shaped wing at cruise, take-off, and landing configurations. An interactive numerical and experimental method …
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SPH Simulation of Fluid-Structure Interaction Problems with Application to Hovercraft
… FEM model. The fluid part including the air inside the chamber and water are simulated by SPH. A validation case is performed to investigate the application of SPH-FEM model in ACV/SES via comparison with experimental data (Zalek and Doctors, 2010). The thesis provides the theory of the …
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Comparative Hydrodynamic Testing of Small Scale Models
Early in the ship design process, naval architects must often evaluate and compare multiple hull forms for a specific set of requirements. Analytical tools are useful for quick comparisons, but they usually specialize in a specific hull type and are therefore not adequate for comparing dissimilar …