एक द्रव प्रवाह में, नियत पीजोमीट्रिक हेड की रेखा दो बिन्दुओं से पास होती है, तो उन बिंदुओं पर_____समान होगा।

Explanation:

Bernoulli equation has been obtained on the assumptions that the fluid is ideal and the flow is steady. Therefore, the Bernoulli equation is nothing but the law of conservation of energy. This equation includes the pressure (or flow) and kinetic and potential energy. Accordingly the terms pressure head, velocity head and potential head (also called the datum head) are used. Sum of the pressure and potential head is called the piezometric head and sum of all the heads is named as the total head. Thus according to the Bernoulli equation, the total head is constant throughout the flow.

धारा रेखाओं के अनुदिश बर्नौली का समीकरण:

\(\frac{P}{{\rho g}} + \frac{{{v^2}}}{{2g}} + Z =\) स्थिरांक

ऊंचाई हेड: Z

दाब हेड: P/ρg

वेग हेड: v2/2g

दाब समोच्च हेड: (P/ρg) + Z = हाइड्रोलिक ग्रेड रेखा (HGL)

कुल हेड: (P/ρg) + (v2/2g) + Z = ऊर्जा ग्रेड रेखा (EGL)

\(\frac{P}{{\rho g}} + Z + \frac{{{v^2}}}{{2g}} =\) स्थिरांक

दाब समोच्च हेड + वेग हेड = स्थिरांक

So, as per the above explanation, the total head i.e. Pressure head, Velocity head, Piezometric head are constant. It means, for total head to be constant, each head should be constant. Therefore, in fluid flow, the line of constant piezometric head passes through two points that have the constant Velocity head.