Predicting transition from laminar to turbulent flow over a surface
US9418202B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2013 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Feb 12, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A prediction of whether a point on a computer-generated surface is adjacent to laminar or turbulent flow is made using a transition prediction technique. A plurality of instability modes are obtained, each defined by one or more mode parameters. A vector of regressor weights is obtained for the known instability growth rates in a training dataset. For an instability mode in the plurality of instability modes, a covariance vector is determined. A predicted local instability growth rate at the point is determined using the covariance vector and the vector of regressor weights. Based on the predicted local instability growth rate, an n-factor envelope at the point is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.