Moving and Rotating Sphere in the Thermal Entrance Region of a Heated Pipe

N. Shahcheraghi; H. A. Dwyer

doi:10.1115/1.521469

Journal of Heat Transfer | Volume 122 | Issue 2 | TECHNICAL PAPERS

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TECHNICAL PAPERS: Heat Transfer Enhancement

Moving and Rotating Sphere in the Thermal Entrance Region of a Heated Pipe

N. Shahcheraghi and H. A. Dwyer

[+] Author and Article Information

N. Shahcheraghi, H. A. Dwyer

Mechanical and Aeronautical Engineering Department, University of California, Davis, CA 95616

J. Heat Transfer 122(2), 336-344 (Dec 10, 1999) (9 pages) doi:10.1115/1.521469 History: Received January 05, 1999; Revised December 10, 1999

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Basic arrangement for the moving and rotating sphere inside the pipe

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(a) Typical Chimera grid with holes (hollow squares) and fringe points (solid squares) (b) Typical Chimera grid used in this study

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Sphere surface pressure, Re_p=25, D_s/D_p=0.4

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(a) Local friction factor on sphere surface at various angles, Re_p=25, D_s/D_p=0.4 (b) Local friction factor contours on sphere surface, Re_p=25, DR=0.4

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(a) Local Nu around the sphere at various angles, Re_p=25, D_s/D_p=0.4, X^=0.0 (b) Local Nu around the sphere at various angles, Re_p=25, D_s/D_p=0.4, X^=0.168

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Nusselt number contours on sphere surface, Re_p=25, D_s/D_p=0.4, X^=0.0 (a) and X^=0.168 (b)

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(a) Convergence history for the velocity field (b) Convergence history for the pressure correction variable, ϕ

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Shahcheraghi NN, Dwyer HA. Moving and Rotating Sphere in the Thermal Entrance Region of a Heated Pipe. ASME. J. Heat Transfer. 1999;122(2):336-344. doi:10.1115/1.521469.

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Moving and Rotating Sphere in the Thermal Entrance Region of a Heated Pipe

References

Figures

Basic arrangement for the moving and rotating sphere inside the pipe

(a) Typical Chimera grid with holes (hollow squares) and fringe points (solid squares) (b) Typical Chimera grid used in this study

Sphere surface pressure, Re_p=25, D_s/D_p=0.4

(a) Local friction factor on sphere surface at various angles, Re_p=25, D_s/D_p=0.4 (b) Local friction factor contours on sphere surface, Re_p=25, DR=0.4

Stream lines in the plane of symmetry, Re_p=25, D_s/D_p=0.4

Sphere Nusselt Number, Nu_s, versus distance, X^*, from pipe thermal entrance

Sphere temperature, T_S^, versus distance, X^, from pipe thermal entrance

(a) Local Nu around the sphere at various angles, Re_p=25, D_s/D_p=0.4, X^=0.0 (b) Local Nu around the sphere at various angles, Re_p=25, D_s/D_p=0.4, X^=0.168

Nusselt number contours on sphere surface, Re_p=25, D_s/D_p=0.4, X^=0.0 (a) and X^=0.168 (b)

(a) Convergence history for the velocity field (b) Convergence history for the pressure correction variable, ϕ

Tables

Errata

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Moving and Rotating Sphere in the Thermal Entrance Region of a Heated Pipe

References

Figures

Basic arrangement for the moving and rotating sphere inside the pipe

(a) Typical Chimera grid with holes (hollow squares) and fringe points (solid squares) (b) Typical Chimera grid used in this study

Sphere surface pressure, Rep=25, Ds/Dp=0.4

(a) Local friction factor on sphere surface at various angles, Rep=25, Ds/Dp=0.4 (b) Local friction factor contours on sphere surface, Rep=25, DR=0.4

Stream lines in the plane of symmetry, Rep=25, Ds/Dp=0.4

Sphere Nusselt Number, Nus, versus distance, X*, from pipe thermal entrance

Sphere temperature, TS*, versus distance, X*, from pipe thermal entrance

(a) Local Nu around the sphere at various angles, Rep=25, Ds/Dp=0.4, X*=0.0 (b) Local Nu around the sphere at various angles, Rep=25, Ds/Dp=0.4, X*=0.168

Nusselt number contours on sphere surface, Rep=25, Ds/Dp=0.4, X*=0.0 (a) and X*=0.168 (b)

(a) Convergence history for the velocity field (b) Convergence history for the pressure correction variable, ϕ

Tables

Errata

Discussions

Related Content

Journals

Conference Proceedings

eBooks

Sphere surface pressure, Re_p=25, D_s/D_p=0.4

(a) Local friction factor on sphere surface at various angles, Re_p=25, D_s/D_p=0.4 (b) Local friction factor contours on sphere surface, Re_p=25, DR=0.4

Stream lines in the plane of symmetry, Re_p=25, D_s/D_p=0.4

Sphere Nusselt Number, Nu_s, versus distance, X^*, from pipe thermal entrance

Sphere temperature, T_S^, versus distance, X^, from pipe thermal entrance

(a) Local Nu around the sphere at various angles, Re_p=25, D_s/D_p=0.4, X^=0.0 (b) Local Nu around the sphere at various angles, Re_p=25, D_s/D_p=0.4, X^=0.168

Nusselt number contours on sphere surface, Re_p=25, D_s/D_p=0.4, X^=0.0 (a) and X^=0.168 (b)