Lecture

Concepts of Fluid Mechanics: Forces, Fluid Definition, Eulerian Description

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

In course

PHYS-201(d): General physics : electromagnetism

The topics covered by the course are concepts of electromagnetism, properties of waves, and fluid mechanics. ...

Description

This lecture covers sections 9.1 to 9.4, introducing forces in static and dynamic fluids, a historic experiment on gas molecules, fluid classification, Eulerian concept for fluid motion, and conservation laws. It discusses pressure, fluids definition, mass densities, Eulerian description, acceleration, and conservation laws.

Instructor

Dirk Grundler

Official source

Ontological neighbourhood

Physics

Mechanics: Fluid mechanics

Related concepts (27)

Fluid dynamics

In physics, physical chemistry and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids—liquids and gases. It has several subdisciplines, including aerodynamics (the study of air and other gases in motion) and hydrodynamics (the study of liquids in motion). Fluid dynamics has a wide range of applications, including calculating forces and moments on aircraft, determining the mass flow rate of petroleum through pipelines, predicting weather patterns, understanding nebulae in interstellar space and modelling fission weapon detonation.

Non-Newtonian fluid

A non-Newtonian fluid is a fluid that does not follow Newton's law of viscosity, that is, it has variable viscosity dependent on stress. In non-Newtonian fluids, viscosity can change when under force to either more liquid or more solid. Ketchup, for example, becomes runnier when shaken and is thus a non-Newtonian fluid. Many salt solutions and molten polymers are , as are many commonly found substances such as custard, toothpaste, starch suspensions, corn starch, paint, blood, melted butter, and shampoo.

Drilling fluid

In geotechnical engineering, drilling fluid, also known as drilling mud, is used to aid the drilling of boreholes into the earth. Often used while drilling oil and natural gas wells and on exploration drilling rigs, drilling fluids are also used for much simpler boreholes, such as water wells. The three main categories of drilling fluids are water-based muds (WBs), which can be dispersed and non-dispersed; non-aqueous muds, usually called oil-based muds (OBs); and gaseous drilling fluid, in which a wide range of gases can be used.

Conservation law

In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Exact conservation laws include conservation of mass-energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric charge. There are also many approximate conservation laws, which apply to such quantities as mass, parity, lepton number, baryon number, strangeness, hypercharge, etc.

Force

In physics, a force is an influence that can cause an object to change its velocity, i.e., to accelerate, unless counterbalanced by other forces. The concept of force makes the everyday notion of pushing or pulling mathematically precise. Because the magnitude and direction of a force are both important, force is a vector quantity. It is measured in the SI unit of newton (N) and often represented by the symbol F.

Related lectures (64)

Conservation Laws and Bernoulli Equation

Covers conservation laws in fluid dynamics, including the Venturi effect and Bernoulli equation.

Fluid Definition, Pascal's Law, CMS - Physics - Dynamics

Covers fluid definition, Pascal's law, and conservation of momentum in various scenarios involving fluids and objects.

Fluid Mechanics: Bernoulli's Equation and Applications

Discusses Bernoulli's equation and its applications in fluid mechanics, including practical examples like pitot tubes and venturi meters.

Fluid Mechanics: Concepts and Applications

Covers key concepts in fluid mechanics, historical experiments, forces, pressure variation, and practical applications like hydraulic lifts.

Fluid Statics: Fundamentals