Introducing 

Prezi AI.

Your new presentation assistant.

Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.

Loading…
Transcript

The Aroma

The Conclusion

  • There are a ton of different flavors detectible in whiskey, but there are two main classes
  • Ethyl alcohol is where you get the burn
  • Congeners are the complex oak smells
  • Liquid-gas phase transfer facilitates smell transport
  • High vapor pressure leads to volatility
  • The heat of vaporization is the enthalpy of phase change
  • Focus on ethyl alcohol
  • Flow is driven by pressure
  • As you move upward, mass conservation requires that the flow be accelerated
  • The converging geometry creates a favorable pressure gradient
  • Density: 789 kg/m^3
  • Vapor Pressure: 5.95 kPa
  • Heat of Vaporization: 841 kJ/kg

The Assumptions

  • Cylindrical Coordinates
  • Axis-symmetric
  • Fully developed
  • No body forces
  • Snifter can be represented as a parallelogram
  • Ethyl alcohol vapor jet
  • Neglect body forces

The Snifter

The Sweet Smell of Whiskey

  • The snifter is meant to provide an enhancement for the whiskey aroma
  • Heat is transferred from your hand to the whiskey through the glass (no ice!)
  • The heat helps to evaporate the whiskey, liberating its aroma
  • The snifter glass is shaped like a converging nozzle
  • Fun fact: on its side the snifter won't spill

The Solution

The Equations

  • Continuity
  • Z-Momentum
  • Simplification
  • Boundary conditions
  • Velocity is a function of geometry and pressure
  • uMax happens at the centerline
  • At the top of the glass, geometry is contributing less to velocity
  • Is the pressure contributing enough to drive the flow?

The Photos

The Bernoulli

  • Bernoulli shows a different way of looking at velocity
  • Mass conservation shows that velocity will in fact accelerate the flow when A2 < A1
  • Given the change in area, and the volatility of Ethyl Alcohol, there will be an aromatic free jet
  • Well-defined jet visible
  • Super-critical dihydrogen oxide used for visualization media
Learn more about creating dynamic, engaging presentations with Prezi