Abstract
The calculation of the flow rate, power requirement and thermal energy of the extrusion machine requires preliminary knowledge of the expressions for the velocity and temperature profiles along the depth and for the pressure variation along the length of the screw channel The system of 19 equations with 19 unknowns which describes the thermomechanical process in the transition zone cannot, in general, be integrated directly owing to the complex interdependence between the velocity, temperature and pressure profiles and the dependence on temperature and pressure of the physical characteristics of the material which is processed. The paper presents a method for solving the system of equations which describes the thermomechanical process occurring in the screw channel and a procedure by means of which the expressions for the velocity, temperature and pressure profiles can be obtained. The adopted method is such that these expressions also take into account the heat developed by internal friction. It is assumed that the thermomechanical process in the machine is non-isothermal and polytropic and that the pressure at a point of the screw channel is anistropic.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
