Thermal Fluid Flow Transport Phenomenon in Unsteady Rotating Drum during Spin-Down Process
Numerical analysis is performed on unsteady-state thermal fluid flow transport phenomena in a rotating drum heated at constant wall temperature during a spin-down process. Emphasis is placed on the effect of aspect ratio of the drum on the velocity and temperature fields. The governing equations are...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2005-01-01
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| Series: | International Journal of Rotating Machinery |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1155/IJRM.2005.197 |
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| Summary: | Numerical analysis is performed on unsteady-state
thermal fluid flow transport phenomena in a rotating drum heated
at constant wall temperature during a spin-down process. Emphasis
is placed on the effect of aspect ratio of the drum on the
velocity and temperature fields. The governing equations are
discretized by means of a finite-difference technique and
numerically solved to determine the distributions of velocity
vector and fluid temperature in the drum. It is disclosed from the
study that (i) the formation of Ekman boundary layers on both
sidewalls of the drum results in a pair of recirculating flows,
and (ii) an attenuation of the flow velocity is affected by the
aspect ratio of a drum. Results may be used to develop a method to
achieve uniform mixing in an enclosed vessel. |
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| ISSN: | 1023-621X 1542-3034 |