Physics Help Forum head loss at venturi meter

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 Apr 13th 2016, 04:58 AM #1 Senior Member   Join Date: Jun 2014 Posts: 306 head loss at venturi meter A venturi meter is being calibrated horizontally and has a diameter of 75mm at the entrance and 50mm at the throat . The flow rate is obtained by measuring the time required to collect certain amount of water . The average number of measurement gives 0.614m^3 of water in 55.82 second . If the pressure gauge at the inlet reads 20kN/ (m^2) more than the throat , calculate the head loss due to friction using Bernoulli's equation for the first step , i have use the special formula(refer to the second and third attachment) to find the therorical velocity at point 2 ( assume no energy loss) , so , i got V2 = 7.07m/s then i found the real flow rate = 0.011(m^3) / s assuming no loss at point 1 , i equate A2V2 = A1V1 so , i got V1= 3.14m/s then substitute all the values that i found into the Bernoulli's equation , i found the head loss . Is my working correct ? I dont have the answer with me. Attached Thumbnails
 Apr 13th 2016, 11:34 PM #2 Senior Member   Join Date: Jun 2014 Posts: 306 bump bump bump

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# math of venturimeter with head loss

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