**Chapter 1 Videos: Introduction to Fluid Mechanics**

**A General Introduction to Fluid Mechanics and Its Applications (11 min.)**

Introduction to the engineering applications of fluid mechanics and an overview of how this course fits into your curriculum.

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General Introduction to Fluid Mechanics (pdf) | |

File Size: | 3728 kb |

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**Part 1: Introduction to Fluid Mechanics**

**(25 min.)**

Some basic concepts in fluid mechanics: The technical definition of a fluid, the physical basis of pressure, the continuum approximation and the principle of dimensional homogeneity.

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Chapter 1 Introduction, Part 1 (pdf) | |

File Size: | 2736 kb |

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**Part 2: Introduction to Fluid Mechanics**

**(46 min.)**Continuing with basic concepts in fluid mechanics: The no-slip condition, fluid properties (density, specific gravity, specific weight, viscosity), Newton's law of viscosity and a calculation of viscous shear stress in a fluid, Newtonian and non-Newtonian fluids, laminar and turbulent flow and the Reynolds number.

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Chapter 1 Introduction, Part 2 (pdf) | |

File Size: | 4335 kb |

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**Rotational Viscometer Demonstration (10 min.)**

Demonstration of the measurement of the dynamic viscosity of a Newtonian and Non-Newtonian fluid with a rotational viscometer. This video will also be helpful for understanding and writing up your report for Lab 1.

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**Solved Example Problem: Dimensional Consistency (9 min.)**

Solved problem showing the dimensional consistency of Stokes' equation. This type of analysis is important for Chapter 5 (Dimensional Analysis).

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Solved Example: Dimensional Consistency (pdf) | |

File Size: | 369 kb |

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**Solved Example: Shear Stress in a Boundary Layer (14 min.)**

An example of calculating the viscous fluid shear stress in a boundary layer flow using Newton's Law of Viscosity.

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Solved Example: Viscous Shear Stress in a Boundary Layer (pdf) | |

File Size: | 1281 kb |

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**Part 3: Introduction to Fluid Mechanics**

**(12 min.)**

Some basic concepts in fluid mechanics: Vapor pressure and cavitation.

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Chapter 1 Introduction, Part 3 (pdf) | |

File Size: | 3096 kb |

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**Vapor Pressure Demonstration (5 min.)**

A demonstration of how to get a container (mason jar) of saturated water. This saturated mixture will boil at low temperature when vapor is condensed onto the lid using an ice cube. This is a demonstration of the action of vapor pressure.

YouTube Video

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**Part 4: Introduction to Fluid Mechanics**

**(18 min.)**

Additional basic concepts in fluid mechanics: Surface tension and capillary effects.

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Chapter 1 Introduction, Part 4 (pdf) | |

File Size: | 4286 kb |

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**Solved Example Problem: Viscometer (15 min.)**

Solution of a problem involving the calculation of the viscous shear stress of a fluid on a rotating cone. There is also a short video at the end, showing a commercial viscometer.

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Solved Example: Cone Viscometer (pdf) | |

File Size: | 325 kb |

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**Solved Example Problem: Capillary Tube (15 min.)**

Solution of a problem involving "capillary action". The problem involves calculating the height that the water is drawn up a tube by the surface tension force. There is also a discussion of how to calculate the capillary effect between two long parallel plates.

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Solved Example: Capillary Tube (pdf) | |

File Size: | 165 kb |

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**Optional Chapter 1 Videos**

**Fluidized Beds (8 min.)**

Optional supplemental viewing, which I think you will find fascinating. I discuss in my in-person lecture course -- the slides are given below. Bubbling air through sand can cause it to act like a liquid. In other words, the sand cannot resist shear stress. Fluidized beds are widely used in industry to promote chemical reactions, for heat treatment, for drying, for the combustion of coal, etc.

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Concept Quiz w/ Fluidized Bed Video (pdf) | |

File Size: | 612 kb |

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**The Pitch Drop Experiment (3 min.)**

Optional supplemental viewing, which I discuss in my traditional lecture course. "Pitch" is a more solid version of tar. Is "solid" pitch a fluid? The world’s longest running laboratory experiment demonstrates that it is!

YouTube Video

Pitch Drop Experiment (pdf) | |

File Size: | 959 kb |

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**Breaking a Beer Bottle using Cavitation (4 min.)**

Optional supplemental viewing. I do this physical demonstration in my in-person lecture course. One of my favorite videos, which shows how to break the bottom out of a beer bottle using cavitation. The high-speed (slow motion) video is starts at 1:46. Notice the vapor bubble that forms in the water at the bottom of the bottle -- because the local pressure falls below the vapor pressure of water at room temperature. This vapor bubble collapses so quickly and forcefully that it breaks the bottom out of the bottle.

**If you try this, be sure to wear thick gloves!**

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**Toronto Metropolitan University**