Dynamic pressure


Laws of classical mechanics
Law of conservation of mass • Law of conservation of momentum • Law of conservation of energy • Inequality of Clausius
Mechanics of deformable and rigid body
Solid state:
Stresses • Deformation • Theory of small deformations • The theory of large deformations • Theory of elasticity • Mechanics of contact interaction • Resistance of materials • Theory of plasticity • Mechanics of fracture
Mechanics of liquids and gases
Fluid: Pressure • Hydrostatics (Archimedes law; Pascal law) • Hydrodynamics (Bernoulli law) • B ' luminance (Newtonian fluid; non-Newtonian fluid)
Fluid: Surface tension • Capillary effect
Gas: Ideal gas equation (Gay-Lussac law; Boyle's law - Mariotta; Charles's law) • Real gas
Plasma
Rheology
Viscoelasticity • Intelligent Fluids (Magnetoheological Fluid, Electroheological Fluid, Ferromagnetic Fluid) • Rheometry
Basic Equations
Continuity Equation • Euler Equation • Navier - Stokes Equation • Diffusion Equation • Hooke Law > Newton • Stokes • Navier • Cauchy • Sound, Bernoulli
Dynamic Pressure (Rus. dynamic pressure; eng. dynamic pressure; by him. dynamischer Druck m) is the part of the pressure inside the moving fluid or gas caused by their motion; characterizes their kinetic energy.



p

d
y
n


=



& # x03C1;

v

2


2




{ displaystyle p_ {dyn} = { frac { rho v ^ {2}} {2}}}








& # x03C1;


{ displaystyle rho}

- density, v - fluid or gas flow rate.
Physical value
Dynamic pressure closely associated with the kinetic energy of the fluid parts, since both quantities are proportional to the mass of the parts ki (due to density, in the case of dynamic pressure) and the square of velocity. Dynamic pressure is one of the terms of the Bernoulli Equation, which is essentially the equation of conservation of energy for a fluid in motion. Dynamic pressure equals the difference between the braking pressure and the static pressure. also Bernoulli's Law on Hydrostatic Pressure
Literature
Small Mountain Encyclopedia: 3 vols / ed. VS Biletsky. - Donetsk: Donbass, 2004. - ISBN 966-7804-14-3.
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