A mathematical model to study the effect of the air jet in the blowing process.(Report): An article from: Polymer Engineering and Science
Book Details
Author(s)Kostas D. Housiadas
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB005CZ53Z0
ISBN-13978B005CZ53Z9
MarketplaceFrance 🇫🇷
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on July 1, 2011. The length of the article is 11352 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: The aerodynamic effect of the air jet that supports the polymeric films produced in the film blowing process is studied theoretically. The nonlinear coupling between the air and the polymer is examined by assuming steady, axisymmetric, and isothermal flow for both phases. The governing equations for the polymer are simplified by following the thin-film approximation and the corresponding ones for the air are derived by applying a boundary-layer type analysis. The latter are solved analytically by first applying the Mangler transformation that reduces the boundary layer equations for the axisymmetric case to those for a plane boundary layer. Then a similarity solution is obtained, allowing the shear stress and the pressure on the outer polymer/air interface to be evaluated in terms of the film shape only. The final set of ordinary differential equations for the film is solved numerically using finite differences. The results show that the force caused by the airflow has a significant effect on the film shape and the characteristics of the final product. POLYM. ENG. SCI., 51:1301-1315, 2011. [c] 2011 Society of Plastics Engineers
Citation Details
Title: A mathematical model to study the effect of the air jet in the blowing process.(Report)
Author: Kostas D. Housiadas
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: July 1, 2011
Publisher: Society of Plastics Engineers, Inc.
Volume: 51 Issue: 7 Page: 1301(15)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: The aerodynamic effect of the air jet that supports the polymeric films produced in the film blowing process is studied theoretically. The nonlinear coupling between the air and the polymer is examined by assuming steady, axisymmetric, and isothermal flow for both phases. The governing equations for the polymer are simplified by following the thin-film approximation and the corresponding ones for the air are derived by applying a boundary-layer type analysis. The latter are solved analytically by first applying the Mangler transformation that reduces the boundary layer equations for the axisymmetric case to those for a plane boundary layer. Then a similarity solution is obtained, allowing the shear stress and the pressure on the outer polymer/air interface to be evaluated in terms of the film shape only. The final set of ordinary differential equations for the film is solved numerically using finite differences. The results show that the force caused by the airflow has a significant effect on the film shape and the characteristics of the final product. POLYM. ENG. SCI., 51:1301-1315, 2011. [c] 2011 Society of Plastics Engineers
Citation Details
Title: A mathematical model to study the effect of the air jet in the blowing process.(Report)
Author: Kostas D. Housiadas
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: July 1, 2011
Publisher: Society of Plastics Engineers, Inc.
Volume: 51 Issue: 7 Page: 1301(15)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
