Lab Report
FACULTY OF ENGINEERING TECHNOLOGY AND INFRASTRUCTURE
DIPLOMA IN CIVIL ENGINEERING
DEC 206
STRENGTH AND FLUID LABORATORY
EXPERIMENT 1 :
REYNOLDS NUMBER DEMONSTRATION
DATE OF EXPERIMENT | 02/07/2013 | DEADLINE | 09/07/2013 | SUBMISSION DATE | 09/07/2013 | LECTURER’S NAME | PUAN NAIMAH BINTI YUSOFF | GROUP MEMBERS ANDID NUMBERS | SYAZWAN BIN MOHD SAIFUDDIN | 121008736 | | MUHAMMAD SYAMIM BIN ROSLI | 121008767 | | MUHAMMAD HAFIZ BIN ABDUL WAHAB | 121008711 |
MARKS |
INTRODUCTION
The Reynolds number (Re) is a dimensionless number that gives a measure of the ratio of inertial forces to viscous forces and consequently quantifies the relative importance of these two types of forces for given flow conditions. Measurement of the fluid flow, often must understand its flow, flow rate distribution. Reynolds number is the characterization of fluid flow characteristics of an important parameter. Fluid flow when the inertial force F g and viscous forces (the friction) F m ratio known as the Reynolds number.
OBJECTIVES
The main objectives of conducting this experiment were: 1. To visualize laminar, transitional and turbulent flows. 2. To determine the conditions under which types of flow occur. 3. To compute Reynolds Number (Re) on fluid flow conditions.
EQUIPMENTS AND APPARATUS a) Dye reservoir. b) Stilling tank. c) Observation tube. d) Stopwatch e) Graduated cylinder
THEORY
Reynolds number is used to distinguish between laminar, transitional and turbulent flows.
Re = Reynolds number
V = Fluid velocity (m/s) d = Pipe diameter (0.012m) v = Kinematic viscosity (0.893 x 10-6m2/s)
Laminar Flow, Re < 2000
Laminar flow denotes a steady condition where all stream lines follow parallel paths. Under this condition, the dye will remain easily identifiable as a solid core.
Transitional Flow, 2000 < Re < 4000
Transitional flow is a mixture of laminar and turbulent flow, with turbulence in the
DIPLOMA IN CIVIL ENGINEERING
DEC 206
STRENGTH AND FLUID LABORATORY
EXPERIMENT 1 :
REYNOLDS NUMBER DEMONSTRATION
DATE OF EXPERIMENT | 02/07/2013 | DEADLINE | 09/07/2013 | SUBMISSION DATE | 09/07/2013 | LECTURER’S NAME | PUAN NAIMAH BINTI YUSOFF | GROUP MEMBERS ANDID NUMBERS | SYAZWAN BIN MOHD SAIFUDDIN | 121008736 | | MUHAMMAD SYAMIM BIN ROSLI | 121008767 | | MUHAMMAD HAFIZ BIN ABDUL WAHAB | 121008711 |
MARKS |
INTRODUCTION
The Reynolds number (Re) is a dimensionless number that gives a measure of the ratio of inertial forces to viscous forces and consequently quantifies the relative importance of these two types of forces for given flow conditions. Measurement of the fluid flow, often must understand its flow, flow rate distribution. Reynolds number is the characterization of fluid flow characteristics of an important parameter. Fluid flow when the inertial force F g and viscous forces (the friction) F m ratio known as the Reynolds number.
OBJECTIVES
The main objectives of conducting this experiment were: 1. To visualize laminar, transitional and turbulent flows. 2. To determine the conditions under which types of flow occur. 3. To compute Reynolds Number (Re) on fluid flow conditions.
EQUIPMENTS AND APPARATUS a) Dye reservoir. b) Stilling tank. c) Observation tube. d) Stopwatch e) Graduated cylinder
THEORY
Reynolds number is used to distinguish between laminar, transitional and turbulent flows.
Re = Reynolds number
V = Fluid velocity (m/s) d = Pipe diameter (0.012m) v = Kinematic viscosity (0.893 x 10-6m2/s)
Laminar Flow, Re < 2000
Laminar flow denotes a steady condition where all stream lines follow parallel paths. Under this condition, the dye will remain easily identifiable as a solid core.
Transitional Flow, 2000 < Re < 4000
Transitional flow is a mixture of laminar and turbulent flow, with turbulence in the
References: a) http://en.wikipedia.org/wiki/Reynolds_number b) http://www.engineeringtoolbox.com/reynolds-number-d_237.html c) http://www.engineeringtoolbox.com/laminar-transitional-turbulent-flow-d_577.html d) http://www.slashdocs.com/prqt/lab-report-osbourne-reynolds-apparatus.html APPENDIX The Reynolds Apparatus that was used during the experiment.