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configure "effective roughness height"

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Old   October 30, 2017, 23:01
Default configure "effective roughness height"
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RAFFAELA
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I am configuring the "wind" object and am having doubts about the configuration of the roughness. Is it necessary to configure "effective roughness height" even though you have already set up "reference height" and "power law index"? or can I consider the default? can anybody help me? thanks.
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Old   November 1, 2017, 06:37
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Hi Raffaela,

Yes it is necessary, the effective roughness height sets the roughness height at the edge of the domain, this will change depending on what type of surface is in front of the buildings you are analyzing. Whereas the reference height sets the height at which the Wind Speed is specified.

Please see the user manual http://www.cham.co.uk/phoenics/d_pol...-type.htm#Wind for more details on all PHOENICS objects.
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