Abstract
Numerical simulation of heat and fluid flow has been performed to clarify the time-averaged gas temperature distribution in a heat exchanger in oscillatory flows. Transient two-dimensional equations of continuity, momentum and energy were solved utilizing a TVD scheme. A physical model of a simple circular tube in which a stack is installed was used for the numerical simulation. In the previous study using the model without a stack, it was shown that the time-averaged gas temperature distribution in the radial direction at operating frequency of 100 Hz is not shaped like a parabolic curve. In this study, the temperature distribution in the model with a stack is investigated to clarify the temperature distribution in a more realistic condition. As a result, it was confirmed that the temperature distribution at operating frequency of 100 Hz approaches a parabolic curve.
