- 1 – Transition to Turbulence: Marking KeyFluid Mechanics CIVL2130/ENVE2602Summary of marks: Overall presentation 3 marks Abstract 2 marks Question 1 2 marks Question 2 2 marks Question 3 5 marks Question 4 2 marks Question 5 2 marks Question 6 2 marks [Overall presentation: 3 marks] - Descriptive introduction of and reference to tables and graphs, and clear and accurate labels. Paragraphs, working for calculations, citations etc.Abstract [2 marks] •Experiment demonstrated the transition in a pipe from laminar to fully turbulent flow. •Link between the Reynolds number, friction factor and head loss is examined, and the determination of the flow type is made by injecting dye into the stream. •Results are graphed on a Moody diagram, allowing the estimation of wall roughness. •Characteristics of laminar and turbulent flow are described, with the dominant parameters in transition to turbulent flow being friction factor, Reynolds number, and head loss. Results Question 1 [2 marks] Derive the equation that relates the velocity in the tube (U) to the rate of change of height in the discharge cylinder (dH/dt).