Spoken Tutorials - OpenFOAM Version 7 Assignment 
				Funded by the National Mission on Education through ICT
				       Indian Institute of Technology Bombay,
					      https://spoken-tutorial.org
					           https://fossee.in
					         https://cfd.fossee.in
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Simulating 1-D Conduction through a Bar:

Increase the length of the bar in the x-direction to 2 metres
Change the DT value to 0.005
Keep all the other parameters unaltered in your simulation
Simulate the heat transfer through this bar
View the temperature contours
See how fast the temperature changes with time now.