Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!

Dynamic pressure

Index Dynamic pressure

Dynamic pressure (sometimes called velocity pressure) is the increase in a moving fluid's pressure over its static value due to motion. [1]

37 relations: Aerodynamics, Bernoulli's principle, Closed system, Conservation of energy, Density, Dimensional analysis, Drag coefficient, First law of thermodynamics, Flow velocity, Fluid dynamics, Gas constant, Heat capacity ratio, Hydraulic head, Ideal gas, Ideal gas law, Impact pressure, Incompressible flow, International System of Units, Kelvin, Kinetic energy, Laurence Joseph Clancy, Lift coefficient, Mach number, Max Q, Pascal (unit), Pitching moment, Pressure, Pressure head, Pressure measurement, Properties of water, Speed of sound, Stagnation pressure, Standard gravity, Static pressure, Stress (mechanics), Thermodynamic temperature, Total dynamic head.


Aerodynamics, from Greek ἀήρ aer (air) + δυναμική (dynamics), is the study of the motion of air, particularly its interaction with a solid object, such as an airplane wing.

New!!: Dynamic pressure and Aerodynamics · See more »

Bernoulli's principle

In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.

New!!: Dynamic pressure and Bernoulli's principle · See more »

Closed system

A closed system is a physical system that does not allow certain types of transfers (such as transfer of mass and energy transfer) in or out of the system.

New!!: Dynamic pressure and Closed system · See more »

Conservation of energy

In physics, the law of conservation of energy states that the total energy of an isolated system remains constant, it is said to be ''conserved'' over time.

New!!: Dynamic pressure and Conservation of energy · See more »


The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.

New!!: Dynamic pressure and Density · See more »

Dimensional analysis

In engineering and science, dimensional analysis is the analysis of the relationships between different physical quantities by identifying their base quantities (such as length, mass, time, and electric charge) and units of measure (such as miles vs. kilometers, or pounds vs. kilograms) and tracking these dimensions as calculations or comparisons are performed.

New!!: Dynamic pressure and Dimensional analysis · See more »

Drag coefficient

In fluid dynamics, the drag coefficient (commonly denoted as: \scriptstyle C_\mathrm d\,, \scriptstyle C_\mathrm x\, or \scriptstyle C_\mathrm w\) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water.

New!!: Dynamic pressure and Drag coefficient · See more »

First law of thermodynamics

The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic systems.

New!!: Dynamic pressure and First law of thermodynamics · See more »

Flow velocity

In continuum mechanics the macroscopic velocity, also flow velocity in fluid dynamics or drift velocity in electromagnetism, is a vector field used to mathematically describe the motion of a continuum.

New!!: Dynamic pressure and Flow velocity · See more »

Fluid dynamics

In physics and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids - liquids and gases.

New!!: Dynamic pressure and Fluid dynamics · See more »

Gas constant

The gas constant is also known as the molar, universal, or ideal gas constant, denoted by the symbol or and is equivalent to the Boltzmann constant, but expressed in units of energy per temperature increment per mole, i.e. the pressure-volume product, rather than energy per temperature increment per particle.

New!!: Dynamic pressure and Gas constant · See more »

Heat capacity ratio

In thermal physics and thermodynamics, the heat capacity ratio or adiabatic index or ratio of specific heats or Poisson constant, is the ratio of the heat capacity at constant pressure to heat capacity at constant volume.

New!!: Dynamic pressure and Heat capacity ratio · See more »

Hydraulic head

Hydraulic head or piezometric head is a specific measurement of liquid pressure above a geodetic datum.

New!!: Dynamic pressure and Hydraulic head · See more »

Ideal gas

An ideal gas is a theoretical gas composed of many randomly moving point particles whose only interactions are perfectly elastic collisions.

New!!: Dynamic pressure and Ideal gas · See more »

Ideal gas law

The ideal gas law, also called the general gas equation, is the equation of state of a hypothetical ideal gas.

New!!: Dynamic pressure and Ideal gas law · See more »

Impact pressure

In compressible fluid dynamics, impact pressure (dynamic pressure) is the difference between total pressure (also known as pitot pressure or stagnation pressure) and static pressure.

New!!: Dynamic pressure and Impact pressure · See more »

Incompressible flow

In fluid mechanics or more generally continuum mechanics, incompressible flow (isochoric flow) refers to a flow in which the material density is constant within a fluid parcel—an infinitesimal volume that moves with the flow velocity.

New!!: Dynamic pressure and Incompressible flow · See more »

International System of Units

The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.

New!!: Dynamic pressure and International System of Units · See more »


The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.

New!!: Dynamic pressure and Kelvin · See more »

Kinetic energy

In physics, the kinetic energy of an object is the energy that it possesses due to its motion.

New!!: Dynamic pressure and Kinetic energy · See more »

Laurence Joseph Clancy

Laurence Joseph Clancy (15 March 1929 to 16 October 2014) was an Education Officer in aerodynamics at Royal Air Force College Cranwell whose textbook became standard.

New!!: Dynamic pressure and Laurence Joseph Clancy · See more »

Lift coefficient

The lift coefficient (CL, CN or Cz) is a dimensionless coefficient that relates the lift generated by a lifting body to the fluid density around the body, the fluid velocity and an associated reference area.

New!!: Dynamic pressure and Lift coefficient · See more »

Mach number

In fluid dynamics, the Mach number (M or Ma) is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound.

New!!: Dynamic pressure and Mach number · See more »

Max Q

In aerospace engineering, the maximum dynamic pressure, often referred to as maximum Q or max Q, is the point at which aerodynamic stress on a vehicle in atmospheric flight is maximized.

New!!: Dynamic pressure and Max Q · See more »

Pascal (unit)

The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength.

New!!: Dynamic pressure and Pascal (unit) · See more »

Pitching moment

In aerodynamics, the pitching moment on an airfoil is the moment (or torque) produced by the aerodynamic force on the airfoil if that aerodynamic force is considered to be applied, not at the center of pressure, but at the aerodynamic center of the airfoil.

New!!: Dynamic pressure and Pitching moment · See more »


Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

New!!: Dynamic pressure and Pressure · See more »

Pressure head

In fluid mechanics, pressure head is the internal energy of a fluid due to the pressure exerted on its container.

New!!: Dynamic pressure and Pressure head · See more »

Pressure measurement

Pressure measurement is the analysis of an applied force by a fluid (liquid or gas) on a surface.

New!!: Dynamic pressure and Pressure measurement · See more »

Properties of water

Water is a polar inorganic compound that is at room temperature a tasteless and odorless liquid, which is nearly colorless apart from an inherent hint of blue. It is by far the most studied chemical compound and is described as the "universal solvent" and the "solvent of life". It is the most abundant substance on Earth and the only common substance to exist as a solid, liquid, and gas on Earth's surface. It is also the third most abundant molecule in the universe. Water molecules form hydrogen bonds with each other and are strongly polar. This polarity allows it to separate ions in salts and strongly bond to other polar substances such as alcohols and acids, thus dissolving them. Its hydrogen bonding causes its many unique properties, such as having a solid form less dense than its liquid form, a relatively high boiling point of 100 °C for its molar mass, and a high heat capacity. Water is amphoteric, meaning that it is both an acid and a base—it produces + and - ions by self-ionization.

New!!: Dynamic pressure and Properties of water · See more »

Speed of sound

The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium.

New!!: Dynamic pressure and Speed of sound · See more »

Stagnation pressure

In fluid dynamics, stagnation pressure (or pitot pressure) is the static pressure at a stagnation point in a fluid flow.

New!!: Dynamic pressure and Stagnation pressure · See more »

Standard gravity

The standard acceleration due to gravity (or standard acceleration of free fall), sometimes abbreviated as standard gravity, usually denoted by or, is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth.

New!!: Dynamic pressure and Standard gravity · See more »

Static pressure

In fluid mechanics the term static pressure has several uses.

New!!: Dynamic pressure and Static pressure · See more »

Stress (mechanics)

In continuum mechanics, stress is a physical quantity that expresses the internal forces that neighboring particles of a continuous material exert on each other, while strain is the measure of the deformation of the material.

New!!: Dynamic pressure and Stress (mechanics) · See more »

Thermodynamic temperature

Thermodynamic temperature is the absolute measure of temperature and is one of the principal parameters of thermodynamics.

New!!: Dynamic pressure and Thermodynamic temperature · See more »

Total dynamic head

In fluid dynamics, Total Dynamic Head (TDH) is the total equivalent height that a fluid is to be pumped, taking into account friction losses in the pipe.

New!!: Dynamic pressure and Total dynamic head · See more »

Redirects here:

Dynamic Pressure, Fluid dynamic pressure, Velocity pressure, Wind pressure.


[1] https://en.wikipedia.org/wiki/Dynamic_pressure

Hey! We are on Facebook now! »