I have the following question as part of a lab intro to explain the more complicated stuff I'l actually have to submit in the lab. I put all the questions here just to show my thought pattern/what I'm supposed to be working through.
Measurement 1 (fan off): Micrometer reading = -0.010 inches Transducer reading = 3.000 volts Measurement 2 (fan on): Micrometer reading = +0.500 inches Transducer reading = 3.586 volts
(a) The relationship between pressure and voltage is linear, calculate an equation which relates the transducer voltage (in volts) to the pressure difference (in Pa) - I understand this, as this is simply do a linear interpretation two points, etc.
(b) Port #8 in the test section is displayed as 3.450V on the meter. Use (a) equation to convert this value to a pressure differentialin Pascal. Calculate the air velocity at this point - Plug and chug the answer from part (a)
(c) The average velocity through the test section at Port #8 is equal to the point velocity in (b). What is the Mach number? Is this incompressible ﬂow? - this I don't know how to find I know M = V/a though
(d) Apply continuity to determine theaverage velocity at Port #2. Based on the same assumption as (c) the average velocity through the test section at Port #8 is equal to the point velocity - and since I don't understand (c) I don't understand this either