Effect of pressure on entrainment flow rate in vertical upwards gas—liquid annular two-phase flow. Part I: Experimental results for system pressures from 0.3 MPa to 20 MPa

Autor: Kotohiko Sekoguchi, Masao Nakazatomi
Rok vydání: 1996
Předmět:
Zdroj: Heat Transfer - Japanese Research. 25:267-280
ISSN: 1520-6556
0096-0802
DOI: 10.1002/(sici)1520-6556(1996)25:5<267::aid-htj1>3.0.co;2-v
Popis: The purpose of this study is to investigate the pressure effects on the entrainment flow rates in vertical gas-liquid annular two-phase flow. The cross-sectional entrainment flow rates were measured using an isokinetic probe method. It was found that the behavior of cross-sectional entrainment flow rate profiles is divided into low- and high-pressure regions. Also, the entrainment flow rates amount to 90 percent of the total liquid flow rate under high-pressure conditions. In this study, system pressure in the closed-loop system was changed substantially from 0.3 MPa to 20 MPa at a constant fluid temperature in vertical upward flow.
Databáze: OpenAIRE