<html><head><style type="text/css"></style></head><body><div style="font-family:arial,helvetica,sans-serif;font-size:10pt"> Dear all,<br><div><br>I am trying to represent the pressure drop at a sudden enlargement, in a pipe.  The pipe initially has a triangular cross section and then an approximately twice larger square cross section.<br><br>Would anybody have any advice as to which correlation I should use when I create the component in my airflow network?<br><br>Thank you in advance.<br><br></div><div style="color: rgb(139, 139, 139);" id="RTEContent"> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div><strong><em>Jérôme Conraud Bianchi</em></strong> </div> M.A.Sc. Student in Building Engineering<br>Concordia University (Montreal-QC-Canada)<br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br> <hr size=1>Make free worldwide PC-to-PC calls. Try the new <a href="http://ca.messenger.yahoo.com/"><b>Yahoo! Canada Messenger with Voice</b></a></body></html>