Hydrodynamics of gas-liquid slug flow along vertical pipes in turbulent regime - A simulation study

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

Mayor, TS (Autor) Outra; Pinto, AMFR (Autor) FEUP; Campos, JBLM (Autor) FEUP

Revista

Título: Chemical Engineering Research and Design

Vol. 85 Nº 12

Páginas: 1497-1513

ISSN: 0263-8762

Editora: Institute of Chemical Engineers

Indexação

ISI Web of Knowledge - 15 Citações

ISI Web of Science

Scopus - 19 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-004-6DX

DOI: 10.1205/cherd06245

Abstract (EN): A thorough study on the simulation of gas-liquid vertical slug flow, based on air-water co-current experimental data (Mayor et al., 2006a), is reported. The flow pattern in the near-wake bubble region and in the main liquid is turbulent. The slug flow simulator includes computation of gas phase expansion along the column and the introduction, at the column inlet, of distributed gas flow rates and liquid slug lengths. A slug flow entrance-length of 50-70 D was found for the ranges of superficial gas and liquid velocities studied (0.1-0.5 m s(-1)). General expressions are proposed to predict the modes and standard deviations of bubble velocity, bubble length, and liquid slug length, as a function of several parameters (column vertical coordinate, superficial gas and liquid velocities and column diameter). Gas phase expansion was found to play a major role in the evolution of the velocity and length of bubbles along the column. The liquid slug length is shown to depend mostly on the coalescence effect.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 17