Forces and torques on a prolate spheroid: low-Reynolds-number and attack angle effects

The three-dimensional flow field around a prolate spheroid has been obtained by integration of the full Navier–Stokes equations at Reynolds numbers 0.1, 1.0, and 10. The 6:1 spheroid was embedded in a Cartesian mesh by means of an immersed boundary method. In the low- Re range, due to the dominance...

Full description

Saved in:
Bibliographic Details
Published in:Acta mechanica 2019-02, Vol.230 (2), p.431-447
Main Authors: Andersson, Helge I., Jiang, Fengjian
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Computational fluid dynamics
Control
Drag coefficients
Dynamical Systems
Engineering
Engineering Thermodynamics
Fluid flow
Grid refinement (mathematics)
Heat and Mass Transfer
Original Paper
Prolate spheroids
Reynolds number
Solid Mechanics
Theoretical and Applied Mechanics
Three dimensional flow
Torque
Vibration
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The three-dimensional flow field around a prolate spheroid has been obtained by integration of the full Navier–Stokes equations at Reynolds numbers 0.1, 1.0, and 10. The 6:1 spheroid was embedded in a Cartesian mesh by means of an immersed boundary method. In the low- Re range, due to the dominance of viscous stresses, an exceptionally wide computational domain was required, together with a substantial grid refinement in the vicinity of the surface of the immersed spheroid. Flow fields in equatorial and meridional planes were visualized by means of streamlines to illustrate Reynolds number and attack angle effects. Drag and lift forces and torques were computed and compared with the most recent correlation formulas. The largest discrepancies were observed for the moment coefficient, whereas the drag coefficient compared reasonably well.
ISSN:0001-5970
1619-6937
DOI:10.1007/s00707-018-2325-x