Fundamentals of Fluid-Solid Interactions

开始时间: 04/22/2022 持续时间: Unknown

所在平台: CourseraArchive 课程类别: 其他类别 大学或机构: École Polytechnique(巴黎综合理工学院)

课程主页: https://www.coursera.org/course/fsi

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What is  fluid-solid interactions  ?  It is what happens when the  motions of a fluid and of a solid are somehow coupled. This happens  all the time,  around you when leaves flutter in the wind,  inside you when your heart beats, above you when wings of a plane vibrate, under the sea...

The idea behind this MOOC  is to give you the basic tools to  be able to predict and eventually mitigate   things called  flutter, galloping, sloshing, vortex-induced vibrations, added mass,  to cite a few. 

We are going to consider  any  possible domains of applications  such as civil engineering,  aerospace engineering, nuclear engineering , ocean engineering, biomechanics and even food  processing !

This is why we  called the course “fundamentals of Fluid solid interactions ”. There are so many phenomena and so many models  that  we   need to work together on the basic mechanisms .

If  you want to see how fluid-solid interactions work,  and be able to use that knowledge, join us !

课程大纲

Week 1 :  Dimensional analysis of fluid-solid coupling

• The variety of fluid-solid couplings
• Dimensional analysis as a classification tool
• Dimensionless numbers in fluid-solid interactions
  
• From dimensionless numbers to dimensionless equations

Week 2 : A solid with a still fluid.

• Low reduced velocities
• Small motions and low reduced velocities
  
• Fluid-added Stiffness
• Neglecting viscous effects
  
• Fluid-added mass.
  

Week 3 : A solid with any fluid.

• Dominant effects of viscosity
• Fluid-added damping 
• Combined effects of fluid viscosity
• Memory  effects 
• Fluid sloshing
  
• Coupling of  fluid sloshing with solid dynamics
  

Week 4  : Coupling with a fast flow. 

• High reduced velocities
• Flow-induced static instabilities, or buckling
• Coupled-mode flutter of airfoils.
  

Week 5 : Coupling with a slow flow.

• Intermediate reduced velocities
• Flutter on one mode
  
• Stall flutter of airfoils
  
• Galloping of bluff bodies
  

Week 6 : Coupling with any  flow.

• The fluid conveying pipe as a reference model of coupling
  
• Coriolis damping
• Solution for any flow velocity
  
• From one mode to two modes
  
• Vortex-induced vibrations
• Lock-in as a case of coupled-mode flutter

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