The document discusses Reynolds number and Reynolds' experiment on fluid flow. It begins with an introduction to concepts like velocity, viscosity, and types of fluid flow. It then explains Reynolds number, which is a dimensionless number that quantifies the ratio of inertial to viscous forces. The document outlines Reynolds' apparatus, which used a glass tube and dye to observe laminar and turbulent flow at different velocities. Based on observations, Reynolds determined that laminar flow occurs at low velocities when Re < 2000, turbulent flow at high velocities when Re > 4000, and transitional flow in between.

1. Gandhinagar Institute
OF Technology(012)
Subject:- FM(2141906)
Active Learning Assignment
Topic Name:- Reynolds Number And Experiment
Branch:- Mechanical B-1
Prepared By:- Jani Parth U.(150120119051)
Guided By:-Prof.Nikita Gupta

2. content
i. introduction
ii. Reynolds number
iii. Reynold’s experiment
iv. APPARATUS
v. Observation by Reynolds
vi. Types Of Flows Based On Reynold Number
vii. Example 1

3. i. introduction
 Velocity — The speed with which knowledge moves
through an organization.
 Viscosity — The richness or thickness of the knowledge
transferred.
 Laminar flow is defined as that type of flow in which
the fluid particles move along well defined paths or
stream line and all the stream lines are straight and
parallel this type of flow is known as laminar flow
 Turbulent flow is defined as that type of flow in which
the fluid particles move is a zig-zag way. The fluid
particles crosses the paths of each other is known as
turbulent flow
Turbulent
Flow
Laminar
Flow

4. continue…

5. ii. Reynolds number

6. Continue…

7. iii. Reynold’s experiment

8. iv. APPARATUS
 The apparatus consist of
a. A tank of water
b. A small tank containing some day
c. A glass tube having a bell mounted entrance at one end and regulating
valve other ends

9. v. Observation by Reynolds
1. At low velocity, the dye will
move in a line parallel to the
tube and also it does not get
dispersed.
2. At velocity little more than
before the dye moves in a wave
form.
3. At more velocity the dye will no
longer move in a straight-line.

10. vi. Types Of Flows Based On Reynold Number
 If Reynold number, RN < 2000 the flow is
laminar flow.
 If Reynold number, RN > 4000 the flow is
turbulent flow.
 If Reynold number i.e. 2000 < RN < 4000,we
observe a flow in which we can see both
laminar and turbulent flow to gather. This
flow is called Transition flow.

11. vii.Example 1