Date of Award


Degree Name

Master of Science


Chemical and Paper Engineering

First Advisor

Mr. John Fisher

Second Advisor

Dr. Richard Valley

Third Advisor

Dr. Raymond Janes

Access Setting

Masters Thesis-Open Access


This study was conducted to determine the accuracy of the DYSCO simulation program in simulating the open and closed water system on the pilot fourdrinier paper machine located in the Department of Paper Science and Engineering at Western Michigan University. The pilot machine was run at a maximum speed of 76 meters (250 feet) per minute without the press and drier sections, as well as slower speeds of 61 and 46 meters per minute. Retention data were obtained for fiber, titanium dioxide, and water at the three speeds. Upon entering these data along with stream inputs into the DYSCO simulator, it was found that good correlations were obtained for experimental versus computer simulated flows and consistencies. Other simulations carried out for a proposed closed water system proved to be feasible with little or no input of fresh water. Temperature data for the closed system were also obtained.