EXPERIMENT 8 - or layers. In turbulent flow the speed of...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
EXPERIMENT # 8 Q 1. What is the difference between laminar and turbulent flow? LAMINAR FLOW: Laminar flow or Streamline flow can be defined as: Smooth, orderly movement of a fluid, in which there is no turbulence , and any given subcurrent moves more or less in parallel with any other nearby subcurrent. “ Laminar flow occurs when a fluid flows in parallel layers , with no disruption between the layers. In laminar flow the motion of the particles of fluid is very orderly with all particles moving in straight lines parallel to the pipe walls. Characteristics of laminar flow are: Re < 2000 'low' velocity Dye does not mix with water Fluid particles move in straight lines Simple mathematical analysis possible Rare in practice in water systems. TURBULENT FLOW: “Flow of a fluid in which its velocity at any point varies rapidly in an irregular manne r” Turbulent flow is the flow in which the fluid undergoes irregular fluctuations , or mixing, in contrast to laminar flow, in which the fluid moves in smooth paths
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: or layers. In turbulent flow the speed of the fluid at a point is continuously undergoing changes in both magnitude and direction. Characteristics of turbulent flow are: Re &gt; 4000 'high' velocity Dye mixes rapidly and completely Particle paths completely irregular Average motion is in the direction of the flow Mathematical analysis very difficult - so experimental measures are used Most common type of flow. Q 2 . What is head loss due to friction in the following pipe? The head loss in the given pipe due to friction can be expressed as: h = fLv 2 2gd Or h = h 2 h 1 According to the experimental data the following values were calculated for head loss: MANOMTER h 1 (m) MANOMTER h 2 (m) HEAD LOSS h (m) FOR HIGH PRESSURE: 0.190 0.175 0.015 0.200 0.165 0.035 0.210 0.155 0.055 0.220 0.145 0.075 FOR LOW PRESSURE: 0.205 0.165 0.040 0.215 0.150 0.065 0.225 0.140 0.085 0.235 0.130 0.105...
View Full Document

Page1 / 2

EXPERIMENT 8 - or layers. In turbulent flow the speed of...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online