Using eulerlets to model steady uniform flow past a circular cylinder

ABSTRACT

Consider uniform, steady flow past a circular cylinder at Reynolds numbers 26, 36 and 40 before the flow becomes unsteady. Model the flow by using eulerlets, new Green’s functions for Euler flow. This is the first time this eulerlet model has been used, introduced at the recent BETEQ 2017 International Conference. In addition, the far-field is also obtained by matching with oseenlets. Unlike existing Euler flow representations, the drag, wake eddies and far-field wake profile are all captured, and compare favourably with experiment.

KEYWORDS:

• Eulerlets
• oseenlets

Acknowledgments

We wish to thank Dr T. Rahulan, Dr O. Sugar-Gabor and Dr D. Myring of the University of Salford Aeronautics Department, for constructive comments on the research.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

No grants funded this work