Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/814

Title

Analysis of the flow through a circular-to-semicircular cooling baffle bend

Author(s)

Van der Walt, Johannes P.;  Morsi, Yos S.

Abstract

The cooling of moulds through the usage of baffles is commonplace in the plastic injection moulding industry. The flow of cooling water through the baffle entrance experiences a sharp 90° bend as well as a circular-to-semicircular geometry change. As it is apparent from the literature that no pressure loss relationships are available, an experimental test rig was constructed to enable these losses to be measured. Furthermore, a numerical model was constructed through the use of computational fluid dynamics to assist in the development of these correlations. This paper discusses this flow problem and develops a new empirical correlation using dimensional analysis for the sharp circular-to-semicircular elbow entrance of the cooling baffle of a plastic injection mould. It was found that the empirical relationship predicts the pressure losses with good accuracy.

Publication type

Journal article

Research centre

Swinburne University of Technology. School of Engineering and Science

Source

Journal of mechanical engineering science, Vol. 214, no. 2 (Feb. 2000), pp. 389-397

Publication year

2000

Keyword(s)

Plastic;  Injection;  Moulding;  Cooling;  Circuit;  Baffles;  Pressure;  Losses

Publisher

Professional Engineering Publishing

Format

pp. 389-397

ISSN

0954-4062

Publisher URL

Journal of mechanical engineering science

Publisher URL

http://www.pepublishing.com/frm_journal.asp

Peer reviewed