Bernoulli's equation along the streamline that begins far upstream of the tube and comes to rest in the mouth of the Pitot tube shows the Pitot tube measures the stagnation pressure in the flow. Therefore, to find the velocity V_e, we need to know the density of air, and the pressure difference (p_0 - p_e). Learn the Bernoulli equation for steady state incompressible flow, and its applications in fluid mechanics problems. Find examples, formulas, tools and resources for engineering and design. Bernoulli’s principle formulated by Daniel Bernoulli states that as the speed of a moving fluid increases (liquid or gas), the pressure within the fluid decreases. Although Bernoulli deduced the law, it was Leonhard Euler who derived Bernoulli’s equation in its usual form in the year 1752. Learn how Bernoulli's equation describes the conservation of mechanical energy in ideal fluid flow. Explore consequences of Bernoulli's equation, including Torricelli's theorem.
