Lecture

Oblique Shock Waves in Perfect Gases

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In course

ME-343: Compressible-fluid dynamics

Fluides compressibles, vitesse sonique, ondes de choc, détente. ...

Description

This lecture explores the relationships between thermodynamic variables in oblique shock waves for perfect gases. It covers the conservation and constitutive equations for oblique shocks, the resolution procedure for finding angles, and the explicit relationships for angles. The instructor explains the conditions required for right and oblique shock waves in supersonic flow, emphasizing the importance of geometric determination. The lecture also delves into the deflection angles and diagrams associated with oblique shock waves, providing a comprehensive understanding of the topic.

Instructor

Flavio Noca

Expertise Fluid MechanicsAerodynamicsDrone Wind & Weather FacilitiesHydrodynamicsCarbon NanotubesExperimental TechniquesBio-Inspired PropulsionSports Aerodynamics & Hydrodynamics Expertise Fluid MechanicsAerodynamicsDrone Wind & Weather FacilitiesHydrodynamicsCarbon NanotubesExperimental TechniquesBio-Inspired PropulsionSports Aerodynamics & Hydrodynamics Current work

Wind & Weather Facilities for Drones - Unsteady Aerodynamics - Advanced Flow Diagnostics Techniques Education PhD | Unsteady Aerodynam

Official source

Ontological neighbourhood

Physics

Thermodynamics: Statistical mechanics

Related concepts (32)

Thermodynamic state

In thermodynamics, a thermodynamic state of a system is its condition at a specific time; that is, fully identified by values of a suitable set of parameters known as state variables, state parameters or thermodynamic variables. Once such a set of values of thermodynamic variables has been specified for a system, the values of all thermodynamic properties of the system are uniquely determined. Usually, by default, a thermodynamic state is taken to be one of thermodynamic equilibrium.

Thermodynamic equilibrium

Thermodynamic equilibrium is an axiomatic concept of thermodynamics. It is an internal state of a single thermodynamic system, or a relation between several thermodynamic systems connected by more or less permeable or impermeable walls. In thermodynamic equilibrium, there are no net macroscopic flows of matter nor of energy within a system or between systems. In a system that is in its own state of internal thermodynamic equilibrium, no macroscopic change occurs.

Thermodynamic process

Classical thermodynamics considers three main kinds of thermodynamic process: (1) changes in a system, (2) cycles in a system, and (3) flow processes. (1)A Thermodynamic process is a process in which the thermodynamic state of a system is changed. A change in a system is defined by a passage from an initial to a final state of thermodynamic equilibrium. In classical thermodynamics, the actual course of the process is not the primary concern, and often is ignored.

Thermodynamic potential

A thermodynamic potential (or more accurately, a thermodynamic potential energy) is a scalar quantity used to represent the thermodynamic state of a system. Just as in mechanics, where potential energy is defined as capacity to do work, similarly different potentials have different meanings. The concept of thermodynamic potentials was introduced by Pierre Duhem in 1886. Josiah Willard Gibbs in his papers used the term fundamental functions. One main thermodynamic potential that has a physical interpretation is the internal energy U.

Conjugate variables (thermodynamics)

In thermodynamics, the internal energy of a system is expressed in terms of pairs of conjugate variables such as temperature and entropy, pressure and volume, or chemical potential and particle number. In fact, all thermodynamic potentials are expressed in terms of conjugate pairs. The product of two quantities that are conjugate has units of energy or sometimes power. For a mechanical system, a small increment of energy is the product of a force times a small displacement. A similar situation exists in thermodynamics.

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