Friday, December 4, 2020
Fluid Mechanics

# Fluid Mechanics

### Surface Tension & Capillary Action

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Surface Tension Surface tension occurs at the interface of the liquid and a gas or at the interface of two liquids. Surface tension (σ) is inversely proportional to temperature. It acts when fluid is at rest. It is a surface phenomenon.

### Non-Newtonian Fluids

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Types of Fluid Newtonian Fluid Non-Newtonian Fluid Non- Newtonian Fluids These types of fluids do not obey Newton’s Law of viscosity. The relation between Shear Stress and Velocity gradient is given by the following formula-

### Vortex Motion Definition

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Vortex Motion A whirling or rotating mass of fluid is called vortex flow. The flow of the fluid in a curved path. Free Vortex Flow In this flow fluid mass rotates due to the conservation of angular momentum. The velocity profile is inversely proportional to the radius.

### Fluid Mechanics: Objective Questions

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Complete Fluid Mechanics Objective Questions with Answers for IES, GATE, and other Exams. Must Practice these questions before appearing for the exam.

### Solid Friction and Viscosity Similarities & Dissimilarities

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What is Friction? Friction is the force that opposes the motion. It acts between the surfaces in contact. There are basically four types of frictions- Definition of Solid Friction The friction that acts between the surfaces of solid surfaces. Static, Sliding and Rolling Frictions are the examples of Solid Frictions.

### Buoyancy and Floatation Notes

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Basic Buoyancy and Floatation Concepts and Formulas Buoyancy When a body is immersed in a fluid, an upward force is exerted by the fluid on the body which is equal to the weig