Lab 4 - Friction Loss in Pipes

Question 1

When and who was one of the earliest people to create expressions for energy loss

Answer 1

Chezy 1775

Question 2

Who discovered that the effect of roughness only matters when compared to the diameter of the pipe

Answer 2

Nikuradse

Question 3

Assumptions for steady incompressible flow

Answer 3

density, viscosity and temperature do not change and that the specific weight is constant

Question 4

Reynolds Number

Answer 4

a quantity which relates the density of the fluid, its

viscosity, its velocity, and pipe diameter

Question 5

Purpose of this lab

Answer 5

determine the friction factor, f, for a pipe and examine the effect of pipe roughness on flow

Question 6

Apparatus

Answer 6

Armfield Fluid Friction Measurements unit (C6MKII)

Question 7

Pipe 7 on figure

Answer 7

15.2mm I.D. (Roughened) (7)

Question 8

Pipe 8 on figure

Answer 8

17.2mm I.D. (8)

Question 9

Pipe 9 on figure

Answer 9

10.9mm I.D. (9)

Question 10

Pipe 10 on figure

Answer 10

7.7mm I.D (10)

Question 11

commercial steel pipe

with roughness

Answer 11

0.046 mm or .0015 for error

Question 12

where the graph of the y function for friction coefficient = 0

Answer 12

where f is equal to

Question 13

Computer data capture unit

Answer 13

C6-50