Viscosity introduction and explanation with examples

1. Viscosity
NAME : SHIVA KUMAR NAYAK
CLASS : BSc 1st
sem
COLLEGE: LOYOLA COLLEGE MANVI
TOPIC: VISCOSITY
REG NO : U23CD24S0037

2.  Viscosity refers to the measure of a fluid’s resistance to flow. It describes how
thick or sticky a fluid is and indicates the internal friction within the fluid as
its molecules move past each other. In simple terms, the higher the viscosity,
the slower a fluid flows, and vice versa.
 Types of Viscosity;
 Dynamic Viscosity (Absolute Viscosity) : This type measures a fluid’s internal
resistance to flow when subjected to a shear force. It is typically measured in
units of Pascal-seconds (Pa·s) or poise (P).
 The dynamic viscosity describes how much force is required to make a fluid
flow at a given rate.
 Example: Honey has high dynamic viscosity compared to water.

3.  Kinematic Viscosity;
 Kinematic viscosity is the ratio of dynamic viscosity to the fluid’s density. It is
a measure of how a fluid flows under the influence of gravity.
 It is typically measured in units of square meters per second (m²/s) or stokes
(St).
 Apparent Viscosity;
 This type is used for fluids whose viscosity changes with the rate of flow, such
as non-Newtonian fluids (which do not obey Newton’s law of viscosity).

4. Thank you