About Experiment

• It is important to understand the flame spread over the solid fuels used in our day-to-day life.


• Paper can be considered as a solid fuel.


• The combustible properties of paper will differ significantly depending upon whether it is soaked with a liquid fuel or not.


• Besides this, the paper thickness will also have influence on the flame spread rate.


• In this experiment, we will try to understand the phenomena occurring during the downward propagation of flame in a solid fuel (paper).

Experimental Setup

Experimental Procedure

• The paper is clamped between the two vertical metal strips.


• The paper holder can be rotated to a desired angle.


• Once the fuel is set at a desired angle, the ignition coil is brought into contact at the top edge of the fuel surface.


• Ensure that the ignition takes place uniformly at the contact edge.


• Experiment is conducted in an enclosed chamber with an escape passage for the exhaust gases.


• A high resolution video camera is used to acquire the images.

NOTE: Flame front is identified by the blue zone behind the luminous yellow zone.

Results: images of combustion process

Animation

Flame spread for 10° tilt angle case
To play video click here

Flame spread for different tilt angles
To play video click here