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## 1. What do you mean by fluid and fluid mechanics?

Fluid mechanics is the branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them. It can be divided into fluid statics, the study of fluids at rest; and fluid dynamics, the study of the effect of forces on fluid motion.

## 2. What is fluid mechanics used for?

Physicists study the flow of extremely high-temperature gases through magnetic fields in a search for an acceptable method of harnessing the energy of nuclear fusion reactions. Engineers are interested in fluid mechanics because of the forces that are produced by fluids and which can be used for practical purposes.

## 3. What is fluid and its types?

Fluids are defined as a substance that flows or deforms under the applied shear stress. The fluid has no definite shape of its own. It assumes the shape of its container. Liquids and gases are known as fluids. Depending on the behavior of fluids, fluids are divided into two types.

## 4. What are fluids give examples?

The usual fluids- like water, oils, gases. air and different fluid available are examples of real fluid.

## 5. Who is the father of fluid mechanics?

Ludwig Prandtl

Prandtl changed the field of fluid mechanics and is called the modern father of fluid mechanics because of his introduction of the boundary layer, turbulence mixing theories, etc. Ludwig Prandtl was born in Freising, Bavaria, in 1874. His father was a professor of engineering and his mother suffered from a lengthy illness.

## 6. What do you mean by fluid mechanics?

Fluid Mechanics is the study of fluids at rest (fluid statics) and in motion (fluid dynamics). A fluid is defined as a substance that continually deforms (flows) under applied shear stress regardless of the magnitude of the applied stress. Whereas a solid can resist an applied force by static deformation.

## 7. What is the difference between liquid and fluid?

# Any substance that flows is in fact fluid. All gaseous materials and some liquid materials are considered fluid. # Essentially, the difference between fluid and liquid is the viscosity, which measures the thickness. ... Fluids can also be both incompressible and compressible, but liquids can only be incompressible.

## 8. What is the difference between fluid dynamics and fluid mechanics?

Fluid dynamics is concerned with the movement of fluids(liquid and gas). Dynamics is a sub-part of mechanics. ... So that the fluid is in equilibrium condition not affected by shear stress. Fluid mechanics is a study of statics and dynamics of a fluid i.e study of fluid and forces when fluid is at rest and in motion.

## 9. What is a fully developed flow?

Fully developed flow: Fully developed flow implies that the velocity profile does not change in the fluid flow direction hence the momentum also does not change in the flow direction. In such a case, the pressure in the flow direction will balance the shear stress near the wall.

## 10. What is an example of fluid friction?

Fluid friction is friction that occurs when objects move across or through a fluid. Examples: Swimming – swimmer's body. and the surface of the water.

## 11. What causes fluid to flow?

Shape and drag. Moving automobiles and airplanes experience resistance or drag due to the viscous force of air sticking to their surface. Another source of resistance is pressure drag, which is due to a phenomenon known as flow separation.

## 12. What are the two types of fluid flow?

Fluid flow is generally broken down into two different types of flows, laminar flow, and turbulent flow. Laminar flow is fluid motion in which all the particles in the fluid are moving in a straight line.

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