MODELING TRANSIENT CHURN-ANNULAR FLOWS IN A LONG VERTICAL PIPE

被引：0

作者：

Alves, M. V. C. ^{[1
]}

Barbosa, J. R., Jr. ^{[1
]}

Waltrich, P. J. ^{[2
]}

Falcone, G. ^{[3
]}

机构：

[1] Univ Fed Santa Catarina, Dept Mech Engn, Florianopolis, SC, Brazil

[2] Louisiana State Univ, Dept Petr Engn, Baton Rouge, LA 70803 USA

[3] Tech Univ Clausthal, Inst Petr Engn, Clausthal Zellerfeld, Germany

来源：

PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2013, VOL 8C | 2014年

关键词：

FRACTION PREDICTION; BINARY-MIXTURES; PRESSURE-DROP; HEAT-TRANSFER; ENTRAINMENT; DEPOSITION; RATES;

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A mathematical model is presented to describe the behavior of transient gas-liquid flows involving the churn and annular flow patterns in a long vertical tube. The HyTAF (Hyperbolic Transient Annular Flow) code, developed specifically for this study, is based on the one-dimensional multi-fluid formulation and takes account of hydrodynamic non-equilibrium flow conditions by means of relationships for the rates of droplet entrainment and deposition. A finite difference algorithm is employed to solve the hyperbolic system of mass, momentum and energy equations via the Split Coefficient Matrix Method. The modeling results are compared with experimental data for steady-state annular and churn flows obtained from the literature and with pressure and flow rate induced transient churn-annular flow data generated in a large scale facility (48-nun ID, 42-m long test section).

引用

页数：14

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