y+ calculator

y+ Compute Grid Spacing online

When meshing a geometry for CFD analysis, this handy Y+ calculator computes the height of the first mesh cell off the wall, required to achieve a desired y+ using flat-plate boundary layer theory. The math behind the calculations is obtained from the 5th edition of Frank M. White “Fluid mechanics”. Frank M. White was an American engineer and Professor Emeritus of Mechanical and Ocean Engineering at the University of Rhode Island.

Y+ calculator
Characteristic length external flow
Laminar and turbulent boundary layer
prism layer settings
prism layer settings
prism layer settings
prism layer settings

About this Y+ calculator

This wall y+ calculator is developed from us at Volupe, to help
you being able to use your simulation software in the best way possible.
If you have any questions about your simulation, or ideas for other (or existing calculator) features at our web site, feel free to contact us at support@volupe.com or give me (Christoffer) a call via the contact information below. Your feedback is important for us! 

Calculator Y+

Christoffer Johansson, M.Sc.

Application support engineer
+46 764 479 945