## What is total energy of fluid?

It is the energy possessed by a liquid by virtue of its motion. It is the energy possessed by a liquid by virtue of its height above the ground level. Total energy of the liquid in motion = pressure energy + kinetic energy + potential energy.

## What is real fluid?

Real fluid: Fluid that have viscosity(μ > 0) and their motion known as viscous flow. All the fluids in actual practice are real fluids. Newtonian Fluids: A real fluid in which the shear stress is directly proportional to rate of shear strain (or velocity gradient).

**When the net force acting on a fluid is the sum of only gravity force the equation is called as?**

The Bernoulli equation can be derived by integrating Newton’s 2nd law along a streamline with gravitational and pressure forces as the only forces acting on a fluid element.

**Which is the correct definition of total energy line?**

Total energy line is basically defined as the line which will give the sum of pressure head, potential head and kinetic head of a fluid flowing through a pipe with respect to some reference line. Total energy line = Pressure head + Potential head + Kinetic head H.G.L = P/ρg + Z + V2/2g

### How are hydraulic gradient lines and total energy lines related?

Hydraulic gradient line and total energy line are the graphical representation for the longitudinal variation in piezometric head and total head. Hydraulic gradient line is basically defined as the line which will give the sum of pressure head and datum head or potential head of a fluid flowing through a pipe with respect to some reference line.

### How to calculate the energy of a line?

EL = H = p / γ + v2 / 2 g + h = constant along a streamline (3) For a fluid flow without any losses due to friction (major losses) or components (minor losses) – the energy line would be at a constant level.

**Why is the energy line of a fluid always constant?**

For a fluid flow without any losses due to friction (major losses) or components (minor losses) – the energy line would be at a constant level. In a practical world the energy line decreases along the flow due to losses.