试论柏努利方程

The Discussion on Bernoatiulli Equation

柏努利方程广泛应用于化工等领域。但由于实际流体流动过程中有内能变化,计算时会带来一定的误差,因此有必要对柏努利方程能否满足工程对精度的要求进行论证。文章通过比较理想流体柏努利方程和实际流体柏努利方程,对其物理意义和应用范围进行了分析讨论,在其应用范围内柏努利方程计算的结果才能满足工程计算上所要求的精度。

Bernoulli equation is widely used in chemical engineering. But it will bring some error because of the change of inner energy in practical fluid flow calculation, it is necessary to discuss Bernoulli equation on its accuracy whether to meet the requirements. The paper discussed Bernoulli equation based on energy, work and heat, by comparing ideal and actual fluid Bernoulli equation, and discussed theirs physical meaning and application scope, further confirmed only in the scope of its application, the application of Bernoulli equation can meet the required accuracy of engineering calculation