introslides - 2.016: Hydrodynamics Alexandra H. Techet...

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i 2.016: Hydrodynamics Alexandra H. Techet Dept. of Mechanical Engineering Lecture 1 MIT Dept. Mechanical Engineer ng, 2005
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i What is Hydrodynamics? Hydrodynamics v. Aerodynamics Marine Hydrodynamics platforms propellers, etc. MIT Dept. Mechanical Engineer ng, 2005 – Water is almost 1000 times denser than air! – Design of underwater vehicles, ships, – Waves, wave energy, – External flows around ships, hydrofoils, – Added Mass! – Flow-structure interactions
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i Fluid Properties @20ºC •A i r – Dynamic Viscosity – Kinematic Viscosity – Dynamic Viscosity – Kinematic Viscosity 3 / ρ= 3 1.2 / 5 2 / / ms ν µρ = = × 6 2 / ms 5 2 / µ = × 3 2 / = × 3 1025 / ( ) MIT Dept. Mechanical Engineer ng, 2005 Density •W a t e Density 998 (fresh water) kg m kg m 1.51 10 11 0 1.82 10 Nsm 1.0 10 seawater kg m
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i Ocean Exploration & Hydrodynamics 70-75% of the earth’s surface is covered by water. resources. such as Food, medicines, energy, and water. ocean exploration capabilities and to assure that our ocean resources will persist for generations to come. us to design better ocean vessels and to understand physical ocean processes. MIT Dept. Mechanical Engineer ng, 2005 The earth’s oceans are one of our least explored Many exciting discoveries lie waiting in the deep: Good engineering is needed to advance current Understanding marine hydrodynamics can help
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i Underwater Vehicles & Submarines Alvin, WHOI ABE, WHOI Odyssey, MIT SeaGrant USN Submarine MIT Dept. Mechanical Engineer ng, 2005 Photos removed for copyright reasons.
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i Ship Hydrodynamics is Shum
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introslides - 2.016: Hydrodynamics Alexandra H. Techet...

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