Abstract
Transient laminar natural convection over an isothermal sphere has been studied numerically for high Grashof numbers(105 ≤ Gr ≤ 109) and a wide range of Prandtl numbers (Pr = 0.02Γ0.7Γ7Γ and 100). A plume with a mushroom-shaped cap forms above the sphere. The thickness of both the transient cap and the steady plume stem decreases with increasing Gr or Pr. Flow separation and an associated recirculation vortex may appear in the wake of the sphere depending on the magnitude of Grashof and Prandtl numbers. Overall heat transfer and drag coefficients are also obtained.
| Original language | English (US) |
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| Pages | 9 |
| Number of pages | 9 |
| State | Published - 1997 |
| Event | Proceedings of the 1997 ASME Fluids Engineering Division Summer Meeting, FEDSM'97. Part 24 (of 24) - Vancouver, Can Duration: Jun 22 1997 → Jun 26 1997 |
Other
| Other | Proceedings of the 1997 ASME Fluids Engineering Division Summer Meeting, FEDSM'97. Part 24 (of 24) |
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| City | Vancouver, Can |
| Period | 6/22/97 → 6/26/97 |
ASJC Scopus subject areas
- Engineering(all)