<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>Hello,<br>I want to simulate some counter flows in the building by natural ventilation with Contam, is it necessary to model 2 orifices in every wall in the Contam model to give 2 directions different?<br>Whatever, i tried 2 ways: 1 orifice and 2 orifices, but none works. I always get a error message that there are a window panel is out of bounds or a zone in the building attain the abosolute 0 K. I don't use the wind data of the weather file because i study only the stack effect. I can't understand. Someone could tell why?<br>Here is attached file.<br>Thanks in advance for your helps.<br><br>TAO<br></div>
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