solar modeling

majid1f · July 29, 2014, 19:11

hi.i want to model a solar air heater.im in the cfx setup.but i have a problem with modeling solar radiation. i make a surface and create a radiation for it.totally i make 3 solid :fluid,plate,radiation plate.in set up i make a plate with thermal radiation monte carlo. my plate Temperature is vary by solar radiation.but in setup of cfx for boundary details,cfx said that you must set a fixed temperature and plate only receive radiation.what should i do?
Attachment 32707

Attachment 32708

Attachment 32709

ghorrocks · July 30, 2014, 06:15

Can you post an image of what you are trying to model and your CCL file or output file.

majid1f · July 30, 2014, 09:05

thanks for answering.but the size of file is big what part i attach it.but see this images this is my file images .
setup image
the outline image
the problem

ghorrocks · July 30, 2014, 18:35

What is the object floating in space? Radiation needs a domain to propagate through.

majid1f · July 31, 2014, 05:38

now what should i do?i should make a room with air for radiation?or make domain interface for solid?

ghorrocks · July 31, 2014, 06:57

Have a look at the tutorials for how to set up radiation models. The combustion in a can combustor is one to look at.

July 29, 2014, 19:11	solar modeling	#1
majid1f New Member majid Join Date: Jul 2014 Posts: 8 Rep Power: 11	hi.i want to model a solar air heater.im in the cfx setup.but i have a problem with modeling solar radiation. i make a surface and create a radiation for it.totally i make 3 solid :fluid,plate,radiation plate.in set up i make a plate with thermal radiation monte carlo. my plate Temperature is vary by solar radiation.but in setup of cfx for boundary details,cfx said that you must set a fixed temperature and plate only receive radiation.what should i do? Attachment 32707 Attachment 32708 Attachment 32709

July 30, 2014, 06:15		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Can you post an image of what you are trying to model and your CCL file or output file. majid1f likes this.

July 30, 2014, 18:35		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	What is the object floating in space? Radiation needs a domain to propagate through. majid1f likes this.

July 31, 2014, 06:57		#6
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Have a look at the tutorials for how to set up radiation models. The combustion in a can combustor is one to look at. majid1f likes this.

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July 30, 2014, 09:05		#3
majid1f New Member majid Join Date: Jul 2014 Posts: 8 Rep Power: 11	thanks for answering.but the size of file is big what part i attach it.but see this images this is my file images . setup image the outline image the problem

July 31, 2014, 05:38		#5
majid1f New Member majid Join Date: Jul 2014 Posts: 8 Rep Power: 11	now what should i do?i should make a room with air for radiation?or make domain interface for solid?