Lecture18
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This document summarizes key concepts from a physics lecture on fluids, including Archimedes' principle, buoyant force, continuity equation, Bernoulli's equation, and their applications. It provides examples such as determining the sinking depth of an object in water, and calculating the speed and pressure changes of water flowing through pipes of different diameters. Formulas for pressure, mass flow rate, volume flow rate, and lift force on an object in fluid are also reviewed.
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2) Bernoulli's principle relates pressure, velocity, and elevation of a fluid. It states that for an inviscid, incompressible fluid in steady flow, the sum of pressure, kinetic energy, and potential energy remains constant along a streamline.
3) Viscous flow is discussed along with Poiseuille's law which describes volume flow rate through a pipe. Applications of these fluid dynamics principles are presented
290768014-Euler-Bernolli-equation-ppt.ppt
1. The document discusses the concepts of Euler's equation, Bernoulli's equation, and their applications in fluid dynamics problems involving one-dimensional steady flow.
2. Bernoulli's equation relates the total pressure, velocity, and elevation along a streamline. It is used to analyze flow through orifices, venturi meters, and orifice meters.
3. Measurement techniques like the pitot-static tube and manometers are used to experimentally determine velocities and pressure losses based on the equations.
Fluid (8 MAY 2020).pdf
This document discusses fluid mechanics concepts including fluid statics, fluid dynamics, and the equation of continuity. Key points covered include:
- Fluid statics concepts such as density, pressure, buoyancy force.
- Fluid dynamics concepts such as laminar vs turbulent flow and the equation of continuity.
- Ideal fluid flow assumptions including steady, nonviscous, incompressible, and irrotational flow.
- Examples calculating pressure, buoyancy force, fluid flow rates, and more.
Flows under Pressure in Pipes (Lecture notes 02)
This document discusses fluid flow in pipes under pressure. It presents equations to describe laminar and turbulent flow. For laminar flow, the Hagen-Poiseuille equation gives the relationship between pressure drop and flow rate. For turbulent flow, the velocity profile consists of a thin viscous sublayer near the wall and a fully turbulent center zone. Equations are derived to describe velocity profiles in both the sublayer and center zone based on viscosity and turbulence effects. Pipes are classified as smooth or rough depending on roughness size compared to the sublayer thickness.
(Part iii)- open channels
A broad crested weir with a crest height of 0.3m is located in a channel. With a measured head of 0.6m above the crest, the problem asks to calculate the rate of discharge per unit width, accounting for velocity of approach. Broad crested weirs follow the relationship that discharge per unit width (q) is proportional to the head (H) raised to the power of 3/2. Using this relationship and the given values of 0.3m for crest height and 0.6m for head, the problem is solved through trial and error to find the value of q.
Ejercicios hidraulica
The document contains multiple physics problems involving fluid flow through pipes and tubes. It provides the equations for volume flow rate, velocity, pressure, and other variables related to fluid dynamics. It then asks the reader to use these equations to calculate requested values like velocity, pressure, flow rate, and more at different points in pipes/tubes given conditions like pipe diameter, fluid velocity, pressure, height, and flow rate.
Ch13 ssm
(1) The document discusses fluid dynamics concepts including density, pressure, buoyancy, continuity, and Bernoulli's equation. It provides conceptual explanations and sample calculations for comparing volumes and densities of objects, calculating buoyant forces, and relating pressure, velocity, and flow rates in pipes.
(2) One example calculates the force needed to lift a car using a hydraulic lift, where the pressure applied must be the same at both the large and small pistons.
(3) Another example uses continuity and Bernoulli's equations to relate the velocity and pressure of water flowing at different diameters in a pipe. It finds the velocity and pressure change when the pipe narrows.
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Lecture 02 density, pressure and pascal's principle
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Lecture18
- 1. Physics 101: Lecture 18 Fluids II Exam III Textbook Sections 9.6 – 9.8
Editor's Notes
- 1
- Transparency
- Note previous comes from F=ma. New material comes from conservation of energy!
- 1
- USE FBD F_B – mg = 0 F_B = mg r_w V_dis g = r_ice V_ice g r_w V_dis = r_w V_melted ice V_dis = V_melted ice
- Several Demos here include cans on straws.
- Lift on house if v=30 m/s. Density of air = 1.27 kg / m^3