Ron,
Thank you for your suggestion.
I now have a copy of the den Hartog book and have taken some measurements of the air flow between the rollers.
I have varied the fan speed and am now in a postion to begin predicting the range of air velocities that will cause the problem.
Should be well on...
I have a bed of rollers ( diameter 70mm) close together, 1 mm gap between each. Over this bed of rollers there is a running web of thin paper material. To keep the material in place and stop it from creasing a vacuum of 200mm H2O is generated. I have experienced severe vibrations of the web and...
