Design and Engineering Handbook
Part Design
Tool Design
Failure Analysis
Secondary Operations
Printable Brochure
Tool Design: Coolant Flow Rate



Reynolds Number Formula

NR = 3160 Q
Dn
Q: Coolant Flow Rate in GPM
D: Diameter of Passage in Inches
n: Kinematic Viscosity in Centistokes

Critical Constraints

  • Reynolds number of 6,000 should ensure turbulent flow rate.

  • Ethylene glycol should not be used as coolant for amorphous polyester materials due to its high viscosity which would require excessive flow rate to achieve turbulence.
A flow rate calculator wizard is available to Eastman customers and potential Eastman customers. View the Coolant Flow Rate Wizard. on line.