FAQ-I018
The Aerodynamics of Blown Film Bubble Cooling

Q:  What is theory behind heat removal with an Air Ring and IBC system?

A:  "Commerical blown film production is often limited by the rate of cooling that can be achieved in the production line.  The flow of the cooling air (through narrow passages and around the curved bubble) is characterized by rather complex aerodynamics, including the Venturi and Coanda effects."

To see full the full text of articles "The Aerodynamics of Blown Film Bubble Cooling" and "Numerical Study of Internal Bubble Cooling(IBC) in Film Blowing" by V. Sidiropoulus and J. Vlachopoulos,  CAPPA-D, Dept. of Chemical Engineering, McMaster University, 1280 Main St. West, Hamilton, ON, L8S 4L7 Canada, click on the attachment link below.  These papers posted with permission.

Date of Last Update: 06/01/2005

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NumericalStudyIBC.pdf

Aerodynamics_of_Blown_Film_Bubble_Cooling.pdf

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