Fundamentals
Flows
Boundary Layer Theory
Fluids Potpourri
Basketball Potpourri
100

This quantity, which can be expressed as Force per Unit Area, drives fluid flow

What is pressure?

100

This type of flow occurs at low Reynolds numbers, where the velocity profile takes the shape of a parabola

What is laminar flow?

100

The layer of fluid in the immediate vicinity of a bounding surface where the effects of viscosity are significant (don't overthink it)

What is a boundary layer?

100

This method is commonly used to calculate non-dimensional groups

What is the Buckingham-Pi method?

100

This NBA team holds the record for most wins in a regular season, with 73

Who are the Golden State Warriors?

200

For these types of fluids, we can assert that del (dot) rho = 0.

What are incompressible (constant-density, newtonian) fluids?

200

A line along which the flow of a moving fluid is least turbulent

What is a streamline?

200

A turbulent boundary layer contains swirling of a fluid and its reverse current, known as this

What is an eddy?

200

This equation, named after a famous Swiss mathematician, is a specific case of the generalized macroscopic energy balance

What is the (engineering) Bernoulli equation?

200

This rule prohibits a player from taking an excessively long time to inbound the ball

What is the 5-second (inbound) rule?

300

These set of governing equations are used to describe momentum transport in any system.

What are the Cauchy momentum equations? (Note N-S is a simplification that assumes incompressible)

300

Steady, laminar flow of a viscous fluid between two horizontal (stationary) parallel plates separated by a distance

What is plate poiseuille flow?

300

The thickness of a momentum boundary layer is related to this dimensionless number

What is the Reynolds number?

300

A dimensionless quantity that is used to quantify the resistance an object faces in a fluid environment

What is the drag coefficient?

300

This player is the NBA's all-time leader in 3-point baskets made

Who is Ray Allen?

400

This common boundary condition asserts that the velocity of a fluid along a stationary surface is zero.

What is the no-slip boundary condition?

400

Drag-induced flow between two concentric infinitely long cylinders that rotate is an example of this type of flow

What is Couette Flow?

400

This parameter, the tangential force per unit area that is exerted by the flowing fluid on some surface, is of interest when dealing with boundary layers

What is (wall) shear stress?

400

This dimensionless quantity measures the ratio of inertia forces to gravitational forces

What is the Froude number?

400

The sport of basketball was founded by this Canadian-American physical educator in 1891

Who is James Naismith?

500

This quantity represents the loss of pressure of a fluid in a pipe due to the interactions in between the fluid and the pipe.

What is the friction factor?

500

This type of flow around an object occurs when the Reynolds number is low, i.e. inertial forces are small compared with viscous forces

What is creeping/Stokes flow? (The other case, when viscous forces are negligible, is called potential or inviscid flow)

500

For turbulent flows, this method decomposes instantaneous flow properties into a mean and fluctuating component with the assumption that the mean of the fluctuating component is always zero

What is the Reynolds decomposition? (it's a mathematical technique used to separate the expectation value of a quantity from its fluctuations)

500
The values of the Reynolds number in flow past a pipe must be less than and greater than these two numbers, in the laminar and turbulent cases respectively (please provide both)

What is 2100 and 4000? (Re<2100 = Laminar, Re>4000 = Turbulent, in-between = transition regime)

500

The NBA 3-point line is this far from the basket (an answer that falls within the correct range will be accepted, since it's not a constant distance)

What is between 22 feet and 23 feet, 9 inches (inclusive)?