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. (C) 2010 American Institute of Chemical Engineers AIChE J, 57: 51-56, 2011
Original language | English |
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Pages (from-to) | 51-56 |
Number of pages | 6 |
Journal | AIChE Journal |
Volume | 57 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 2011 |
Keywords
- transverse vibration
- heat transfer
- temperature profile
- CFD
- enhancement