Flashcards in Doppler Deck (21):

1

## Flow

### fluid in a tube flows in response to a pressure difference at both ends.

2

## velocity

### the speed of something in a given direction

3

## Pulsatile flow

### a flow with periodic variations

4

## Phasic flow

### flow a flow of or relating to a phase or phases

5

## Steady flow

### flow of a continuous nature

6

## Laminar flow

### a flow in which neighboring layers do not mix but flow at different velocities

7

## Plug flow

### viscous fluid with no shearing between adjacent layers; idealized w/out any mixing of particles of fluid.

8

## Parabolic flow

### flow layers of fluid are straight and parallel to each other; they slide over each other. The highest flow speed is at the center of the vessel.

9

## Turbulent flow

### random and chaotic flow pattern. Particles move at different speeds in different directions.

10

## Reynolds Number

### a dimensionless quantity that is used to help predict similar flow patterns in different fluid situations

11

## Energy Gradient

### a change in energy over time or space

12

## Kinetic Energy

### energy that a body possesses by virtue of being in motion.

13

## Pressure

### the continuous physical force exerted on or against an object by something in contact with it.

14

## Gravitational Energy

### the movement of an object or mass that is caused by the pull of gravity.

15

## Energy losses in circulation - inertia

### the resistance of energy

16

## Effects of a stenosis

### causes a random and chaotic flow pattern

17

## Bernoulli's Principle

### fluid moves against a pressure gradient from a point of low pressure to a point of high pressure

18

## Pressure Flow Relationships

### the greater the pressure difference, the greater the flow rate

19

## Ohm's Law

### the current through a conductor between two points is directly proportional to the potential difference across the two points.

20

## Hydrostatic Pressure

### the pressure exerted or transmitted by the fluid at rest.

21