Characteristics of Mixing Due to Confluent Flow in a Two-Dimensional Right-Angled T-Shaped Flow Section

Abstract

Characteristics of mixing due to confluent flow in a two-dimensional flow section of right-angled T type were experimentally obtained and the effects of sectional area ratio in and flow rate ratio Q₁/Q₃ on mixing were investigated (Q₁ : upstream flow rate of main stream, Q₃ downstream flow rate of main stream). Furthermore, the effects of confluent downstream flow on mixing were examined by comparing the experimental results in a confluent flow section with calculated results in a two-dimensional straight flow section. The results were as follows :
The downstream length L_e for complete mixing in a confluent flow section became considerably shorter than the calculated results L_c with increasing m and decreasing Q₁/Q₃ (L_c : downstream length required for complete mixing in a two-dimensional straight flow section).
L_e was expressed as a function of contraction coefficient C_c, m and L_c.