Integrate a function of time

sarahtuvia · September 18, 2014, 10:51

Hi
I have Heat as a function of time. How do I integrate it to get the whole
energy in a time section

kguntur · September 18, 2014, 11:56

If I understand correctly, you have heat (in W) at discrete time steps. If so, you could multiply the heat by the time interval and the summation of the resultant would give you total energy.

sarahtuvia · September 18, 2014, 13:14

You understood correcly. But, my problem is not how to het energy from power and time step, my question is how to save the results of the previous time step and add it(integrate) to the new step of energy

cwl · September 24, 2014, 10:39

Create Field Sum Monitor, but don't forget to set the function to "Heat * TimeStep"

sarahtuvia · September 24, 2014, 11:12

Thank you. I'll try it

September 18, 2014, 10:51	Integrate a function of time	#1
sarahtuvia Member tuvia milshtein Join Date: Jun 2014 Location: Israel Posts: 42 Rep Power: 13	Hi I have Heat as a function of time. How do I integrate it to get the whole energy in a time section

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September 18, 2014, 11:56		#2
kguntur Member kris Join Date: May 2014 Posts: 73 Rep Power: 13	If I understand correctly, you have heat (in W) at discrete time steps. If so, you could multiply the heat by the time interval and the summation of the resultant would give you total energy.

September 18, 2014, 13:14		#3
sarahtuvia Member tuvia milshtein Join Date: Jun 2014 Location: Israel Posts: 42 Rep Power: 13	You understood correcly. But, my problem is not how to het energy from power and time step, my question is how to save the results of the previous time step and add it(integrate) to the new step of energy

September 24, 2014, 10:39		#4
cwl Senior Member Chaotic Water Join Date: Jul 2012 Location: Elgrin Fau Posts: 438 Rep Power: 19	Create Field Sum Monitor, but don't forget to set the function to "Heat * TimeStep"

September 24, 2014, 11:12		#5
sarahtuvia Member tuvia milshtein Join Date: Jun 2014 Location: Israel Posts: 42 Rep Power: 13	Thank you. I'll try it