Fundamental Physical Quantities of a Flowing Gas Flashcards
The science that deals with the flow of air
aerodynamics
language of aerodynamics involves
pressure, density, temperature and velocity
IS LIKE WATER.
FLOWING GAS
Quantities of a Flowing Gas
pressure
density
temperature
flow velocity and streamlines
- the amount of matter in an object
MASS
– It can be defined as the rate of change of the object’s position with respect to a frame of reference and time.
VELOCITY
– Defined as the total space taken up by a flat surface or shape of an object
AREA
– The amount of space occupied by a three-dimensional object as measured in cubic units
VOLUME
IS THE FORCE PER UNIT AREA
PRESSURE
IT IS CAUSED BY THE GRAVITATIONAL ATTRACTION OF THE PLANET ON THE ATMOSPHERIC GASES ABOVE THE SURFACE.
PRESSURE
AIR PRESSURE IS COMMONLY MEASURED WITH A BAROMETER HENCE THE NAME
BAROMETRIC PRESSURE
pressure formula
P=N/m*2
DEFINED AS THE MASS OF AN OBJECT DIVIDED BY ITS VOLUME.
DENSITY
DESIGNATED WITH THE SYMBOL RHO
DENSITY
AIR DENSITY ALSO CHANGES WITH VARIATIONS IN
ATMOSPHERIC PRESSURE, TEMPERATURE, AND HUMIDITY.
density formula
D=Kg/m*3
IT CAN BE DEFINED AS THE MEASURE OF HOTNESS AND COLDNESS EXPRESSED IN TERMS OF SEVERAL SCALES
TEMPERATURE
IF THE PARTICLE IS MOVING RAPIDLY, IT HAS A HIGHER ________ THAN, IF IT WERE MOVING SLOWLY.
KENITIC ENERGY
UNITS USED in temp.
Celsius-c
Fahrenheit- F
kelvin-K
rankine-R
EFFECTIVELY DESCRIBES EVERYTHING ABOUT THE MOTION OF A FLUID.
THE FLOW VELOCITY OF A FLUID
is volume per unit of time
flow rate
is distance per unit of time
flow velocity
VELOCITY IS HIGH WHEN STREAMLINES
CROWD TOGETHER
DEFINED AS THE PATH OF A PARTICLE IN FLUID RELATIVE TO A SOLID BODY PAST
STREAMLINES