Studies of heat transfer in complex internal flows

The details of five separate but interrelated research problems are described in this report. The general theme which runs through the work is a search for the effects of flow maldistribution on heat transfer in various types of heat exchange devices. The research includes both experiment and analysis and deals with turbulent flows. The first of the experiments is concerned with the heat transfer and pressure drop response of a tube tank to maldistribution of the flow at the inlet cross section. The second experiment, local turbulent heat transfer coefficients for airflow were measured in a tube situated downstream of a cylindrical plenum chamber in which the inflow was radial and the outflow was axial. The third experiment also deals with maldistribution, in particular, that created when there is a missing tube in a staggered or in-line tube bank.