42184_report.pdf - Laboratory 2 Pipe Flow and Pressure...

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Laboratory 2Pipe Flow and Pressure & Forces on a Circular Cylinder ExperimentFluid Mechanics (48641)• Due: 24thMay 2013Thinkswap Document
Table of Contents1! Pipe Flow Experiment1.1! Introduction 11.2! Aim 11.3! Theory 11.3.1! Bernoulli Equation 21.3.2! Determining Frictional Dissipation 21.4! Apparatus/Equipment 31.5! Procedure 31.6! Results 51.7! Calculations 71.8! Discussion 101.8.1! Usefulness of the Experiment 101.8.2! Accuracy of Measured Values 101.8.3! Agreement between Theory and Experiment 111. 8.3! Ways to Improve the Experiment and Learning Process 111.9! Conclusion 122! Pressure and Forces on a Circular Cylinder Experiment2.1! Aim 132.2! Apparatus/Equipment 132.3! Procedure 142.4! Results 162.5! Calculations 202. 5.1! Pressure Around the Cylinder 202.5.2! Drag Coefficients and Velocity 222.6! Discussion 232.6.1! Errors and Comparison with Expectations and Other Information 232.6.2! Improvement to Experiment 242.6.3! Relevance of Experiment to Subject and to Possible Future Work 252.7! Conclusion 26References IThinkswap Document
2013 - Laboratory 2: Pipe Flow and Pressure & Forces on a Circular Cylinder Experiments1! ! Pipe Flow Experiment 1.1! ! Introduction ! This report describes an experiment to examine the pipe flow key elements including: the forces influences, the flow velocity, the friction losses and ultimately to confirm the principles se forth by Bernoulli equation. The experiment was carried out on Thursday 2ndMay 2013 in the Hydraulics laboratory at level one in building 2, UTS. A modified bernoulli’s equation was used to determine the value of QCalculated for the various values of H.1.2! ! Aim ! To use experimental techniques and results to investigate keys aspects of fluids in pipes, especially frictional losses, by application of the Bernoulli equation.1.3! ! Theory ! The flow of a fluid through a pipe is governed by various equations, representing the array of physic’s laws that control flow conditions. Bernoulli's Equation is the fundamental equation for understanding general pipe flow that relates the pressure loss to the average fluid velocity changes in the pipe. The Reynolds number represents the flow regime that is present in piping. It proves the relationship existence between the fluid's velocity and the density. The Fanning Friction Factor relates the shear stress to the average fluid kinetic energy. Pipe diameter and length are also mitigating factors in this equation.Thinkswap Document
2013 - Laboratory 2: Pipe Flow and Pressure & Forces on a Circular Cylinder Experiments1.3.1!! Bernoulli Equation ! The Bernoulli equation states that a fluid in a pipe that flows between two points with a different elevation will have a changed pressure & the velocity at these points. Hence, the possessed energies will vary too. Combine this with the concept that energy cannot be created or lost (according to the laws of conservation of energy), thus the energy is used to overcome friction in the area of flow.

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