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Hydroelasticity
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Definition
Encyclopedia
In fluid dynamics
Fluid dynamics
In physics, fluid dynamics is a sub-discipline of fluid mechanics that deals with fluid flow—the natural science of fluids in motion. It has several subdisciplines itself, including aerodynamics and hydrodynamics...

 and elasticity
Elasticity (physics)
In physics, elasticity is the physical property of a material that returns to its original shape after the stress that made it deform or distort is removed. The relative amount of deformation is called the strain....

, hydroelasticity or flexible fluid-structure interaction (FSI), is a branch of science which is concerned with the motion of deformable bodies through liquid
Liquid
Liquid is one of the three classical states of matter . Like a gas, a liquid is able to flow and take the shape of a container. Some liquids resist compression, while others can be compressed. Unlike a gas, a liquid does not disperse to fill every space of a container, and maintains a fairly...

s. The theory of hydroelasticity has been adapted from aeroelasticity
Aeroelasticity
Aeroelasticity is the science which studies the interactions among inertial, elastic, and aerodynamic forces. It was defined by Arthur Collar in 1947 as "the study of the mutual interaction that takes place within the triangle of the inertial, elastic, and aerodynamic forces acting on structural...

, to describe the effect of structural response of the body on the fluid around it.

Definition

It is the analysis of the time-dependent interaction of hydrodynamic and elastic structural forces. Vibration
Vibration
Vibration refers to mechanical oscillations about an equilibrium point. The oscillations may be periodic such as the motion of a pendulum or random such as the movement of a tire on a gravel road.Vibration is occasionally "desirable"...

 of floating and submerged ocean structures/vessels encompasses this field of naval architecture
Naval architecture
Naval architecture is an engineering discipline dealing with the design, construction, maintenance and operation of marine vessels and structures. Naval architecture involves basic and applied research, design, development, design evaluation and calculations during all stages of the life of a...

.

Importance

Hydroelasticity is of concern in various areas of marine technology such as:
  • High-speed craft
    High-speed craft
    A high-speed craft is a high speed water vessel for civilian use, also called a fastcraft or fast ferry.The first high-speed craft were often hydrofoils or hovercraft, but in the 1990s catamaran and even monohull designs have become popular.Most high-speed craft serve as passenger ferries, but the...

    .
  • Ships with the phenomena springing
    Springing
    Springing as a nautical term refers to global vertical resonant hull girder vibration due to oscillating wave loads along the hull of the ship....

     and whipping affecting fatigue and extreme loading
  • Large scale floating structures such as floating airportshttp://www.floatinc.com/Floatport.html, floating bridges and buoyant tunnels.
  • Marine Risers.
  • Cable systems and umbilicals for remotely operated or tethered underwater vehicles.
  • Seismic cable systems.
  • Flexible containers for water transport, oil spill recovery and other purposes.

Areas of research

  • Analytical and numerical methods in FSI.
  • Techniques for laboratory and in-service investigations.
  • Stochastic methods.
  • Hydroelasticity-based prediction of Wave Loads and Responses.
  • Impact, sloshing and shock.
  • Flow induced vibration (FIV).
  • Tsunami and seaquake induced responses of large marine structures.
  • Devices for energy extraction.

Current research

Analysis and design of marine structures or systems necessitates integration of hydrodynamics and structural mechanics; i.e. hydroelasticity plays the key role. There has been significant recent progress in research into the hydroelastic phenomena, and the topic of hydroelasticity is of considerable current interest.

Institutes and laboratories


Conferences


Journals

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