CFD simulation of transverse vibration effects on radial temperature profile and thermal entrance length in laminar flow
✍ Scribed by Muhammad Eesa; Mostafa Barigou
- Publisher
- American Institute of Chemical Engineers
- Year
- 2010
- Tongue
- English
- Weight
- 381 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0001-1541
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✦ Synopsis
Abstract
Radial heat transfer in laminar pipe flow is characterized by a wide temperature distribution over the pipe cross‐section. We use a validated Computational Fluid Dynamics (CFD) model to show that the superimposition of a transverse vibration on the steady laminar flow of a Newtonian fluid moving in a pipe with an isothermal wall, generates considerable chaotic flow and radial mixing which result in a large enhancement in wall heat transfer as well as a considerably more uniform radial temperature field. Transverse vibration also causes the temperature profile to develop very rapidly in the axial direction reducing the thermal entrance length by a large factor. These effects are dependent on vibration amplitude and frequency, and fluid viscosity. © 2010 American Institute of Chemical Engineers AIChE J, 2011