Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to Bernoulli principle: Bernoulli equation
when friction is negligible, the velocity of flow of a gas or fluid through a tube is inversely related to its pressure against the side of the tube; that is, velocity is greatest and pressure lowest at a point of constriction.
Bernoulli,Daniel, Swiss mathematician, 1700-1782.
Bernoulli effect - the decrease in fluid pressure that occurs in converting potential to kinetic energy when motion of the fluid is accelerated in accordance with Bernoulli law.
Bernoulli law - when friction is negligible, the velocity of flow of a gas or fluid through a tube is inversely related to its pressure against the side of the tube. Synonym(s): Bernoulli principle; Bernoulli theorem
Bernoulli principle - Synonym(s): Bernoulli law
Bernoulli theorem - Synonym(s): Bernoulli law
a principle which relates to the flow of fluids through tubes: the total hydraulic energy of fluid moving along a tube is constant so that if the tube dilates and causes the velocity to decrease, the kinetic energy involved in moving the fluid is reduced resulting in an increase in the lateral pressure on the vessel wall. This accounts for the tendency for aneurysms to enlarge and for vessels to dilate below a constriction.