One-Dimensional Flow - Flashcards

These flashcards cover the essential vocabulary related to one-dimensional flow in fluid mechanics, focusing on key concepts from shock waves to different types of gas flow.

Normal Shock

A shock wave that is perpendicular to the flow direction; characteristic of one-dimensional flow.

Oblique Shock

A shock wave that is inclined to the flow direction, affecting the flow variables differently than normal shocks.

Fanno Line

An analysis of one-dimensional flow through long pipes considering friction effects.

Rayleigh Line

An analysis of one-dimensional flow with heat addition, relevant for combustion engines.

Mach Number (M)

The ratio of the speed of an object to the speed of sound in the surrounding medium.

Steady Flow

A condition in which flow properties (like velocity and pressure) do not change with time.

Isentropic Process

A process that is both adiabatic (no heat transfer) and reversible, meaning the entropy remains constant.

Hugoniot Equation

A relation that expresses changes in thermodynamic quantities across a shock wave.

Calorically Perfect Gas

A gas for which specific heats are constant over the range of temperatures considered.

Continuous Equations

Equations that describe the conservation of mass, momentum, and energy in fluid flow.

Adiabatic Flow

A flow process where no heat is added or removed from the system.

Total Pressure (P0)

The pressure of a fluid when brought to rest adiabatically.

Static Pressure (P)

The pressure of a fluid at rest, measured normal to the flow direction.

Rayleigh Flow

One-dimensional flow characterized by heat addition.

Entropy

A measure of the disorder or randomness in a system, often associated with energy dispersal.

Speed of Sound (a)

The speed at which pressure waves propagate through a medium.

Stagnation Temperature (To)

The temperature of a fluid when it is brought to rest adiabatically.