ENB205 Lecture Notes - Lecture 5: Reynolds Number, Perfect Fluid, Dimensionless Quantity
Document Summary
The study of motion in fluids, two distinct ways to describe fluid motion: Langrangian sitting in a boat (in flow) Eulerian sitting on a bank (observing flow) A system is defined as a fixed, identifiable quantity of mass; the system boundaries separate the system from the surroundings. The boundaries of the system may be fixed, or movable but no mass crosses them. Heat and work may cross the boundaries of the system. The quantity of matter within the system boundaries remains fixed. A control volume is an arbitrary volume in space through which fluid flows in and out. Control volume may also be known as an open system or a flow domain. The geometric boundary of the control volume is called the control surface. The control surface may be real or imaginary; it may be at rest or in motion. A streamline is a curve that is everywhere tanget to the instantaneous local velocity vector.
