Curved tube heat transfer in laminar, pulsatile, fully-developed flows
Abstract
The effects of both fluid pulsations and curvature on fluid flow and heat transfer in a curved tube subject to pulsatile flow were investigated. A perturbation technique using the modified Dean number as the expansion parameter was applied to the simplified Navier-Stokes equations and energy equation in toroidal coordinate systems. The perturbed governing equations including the second order, are then solved systematically by either a direct integration or by employing the finite Hankel transform. The final results obtained through numerical integration and computation are presented graphically for fluid flow and heat transfer for a wide range of excitation parameters and Prandtl numbers. The effect of curvature is to induce a secondary flow due to the unbalanced fluid centrifugal force. This secondary flow increases the convective mixing between field particles thus enhancing the heat transfer.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1978
- Bibcode:
- 1978PhDT.......115C
- Keywords:
-
- Heat Flux;
- Heat Transfer;
- Surfaces;
- Tube Heat Exchangers;
- Unsteady Flow;
- Convective Flow;
- Fluid Flow;
- Navier-Stokes Equation;
- Prandtl Number;
- Fluid Mechanics and Heat Transfer