Simulation of the paper drying using CFD fied model

Abstract

The process of papermaking involves water removal on the paper machine wire,in the press section and in the dryer section. In the dryer section, liquid water in the wet web is removed mainly by evaporation. In conventional machine this is achieved by passing the web over a number of steam heated dryer rolls. A drying process of paper on a heated cylinder roll calculated based on a 1-dimensional model whic concerns unsteady heat and mass transfer in the direction of paper thickness. In this study, prediction of moisture contents average paper sheet temperature and volume fraction along a series of cylinder. Independently, developed models is compapred using the same reference data. The model is implemented in CFD code,FLUENT,using user-define-function (UDFs).