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Wille
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- A surface facing only the clear sky during night (a windshield of a car), how should the zink/ambient temperature for radiation (*sradiate) be chosen in Abaqus?
Hi,
I want to model the phenomena that a windshield gets covered in ice during a night with clear sky even tough the air holds a temperature of a few degrees above zero Celsius (at which water freezes for sea level pressure). Clearly the windshield gets a temperature below zero Celsius, and this is due to the radiation. In Abaqus I must choose a zink temperature for both the convection and the radiation. For the convection I have set 1 degree Celsius (i.e. the air holds 1 Celsius). But what value should the zink temperature be for the radiation? Should it be about -271 Celsius (i.e. about 2 Kelvin) as in space? Or maybe 60 minus degrees C which is the air temperature a little bit higher up in the atmosphere (at 30 000 feet)?
Thanks
I want to model the phenomena that a windshield gets covered in ice during a night with clear sky even tough the air holds a temperature of a few degrees above zero Celsius (at which water freezes for sea level pressure). Clearly the windshield gets a temperature below zero Celsius, and this is due to the radiation. In Abaqus I must choose a zink temperature for both the convection and the radiation. For the convection I have set 1 degree Celsius (i.e. the air holds 1 Celsius). But what value should the zink temperature be for the radiation? Should it be about -271 Celsius (i.e. about 2 Kelvin) as in space? Or maybe 60 minus degrees C which is the air temperature a little bit higher up in the atmosphere (at 30 000 feet)?
Thanks