A Fundamental Study on Flow Characteristics in Boiler Furnaces : 2nd Report, A Quantitative Evaluation on Mixing Characteristics in Furnaces

Abstract

In the first report the experimental results of the flow patterns and the concentration distribution of tracer fluid in a two-dimensional model on which perforated plates were instead of a tube bundle were reported. In thee present report, in order to evaluate these characteristics quantitatively, numericalcalculations of the flow pattern and the transient concentration distribution based on the turbulent energy model (one equation model) have been conducted. The effects of the magnitude of flow resistance of the tube bundle on the flow pattern and mixing performance were clarified quantitatively referring the comparisons with the experimental results.