Discussions on Bernoulli Equations

Hongxiao Yu


The Bernoulli equation is an energy equation that can be derived through many methods. In this paper, we derive the Bernoulli equation from the aspect of dynamics based on work-energy principle. We studied the derivation of the Bernoulli equation of the ideal fl uid in steady fl ow. We discussed the physical signifi cance of the equations in diff erent conditions, and then discussed the meaning of dynamic pressure in Bernoulli equation and the relationship between dynamic pressure and static pressure. We also listed out the application of Bernoulli equation in production and in life.


dynamics; Work-Energy principle; Bernoulli equation, dynamic pressure

Full Text:


Included Database


Lu Zhongqi. Fluid Mechanics [M]. Beijing: Ministry of Machinery Industry Press, 1979.

Zhao Kaihua, Luo Weiyin. New Concept Physics Course: Mechanics [M]. Beijing: Higher Education Press, 2004.

Hu Xinmin. Medical Physics [M]. Beijing: People's Health Publishing House, 2003.

Kuanghua Jun, editor. Medical Physics. Second Edition. Beijing: People's Health Publishing House, 1985; 40: 86

Huang Xiulin, editor. On Bernoulli equation 'pressure energy.' University Physics 1995; 3: 10,11

Department of Physics, Peking University Department of Physics. General Physics (Mechanics). Beijing: People's Education

Press, 1978

DOI: http://dx.doi.org/10.18282/m.v1i1.120


  • There are currently no refbacks.