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Old   October 9, 2012, 08:49
Question Sun position
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Star CCM+ decide the sun position according to the both of Azimuth and Altitude angles ,the axes for these angles is the XY earth plane and the Z toward sky. My question is where is the centre point for those two angles ,is it on the centre of domain or in another place .
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Old   October 10, 2012, 18:25
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Solar radiation is nearly parallel, so I assume there is no center needed.
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