Publications by Andrea Cioncolini

Pressure drop prediction in annular two-phase flow in macroscale tubes and channels

A new prediction method for the frictional pressure drop in annular two-phase flow is presented. This new prediction method focuses on the aerodynamic interaction between the liquid film and the gas core in annular flows, and explicitly takes into account ...

Pergamon-Elsevier Science Ltd2017

Unified Modeling Suite for Two-Phase Flow, Convective Boiling, and Condensation in Macro- and Microchannels

John Richard Thome, Andrea Cioncolini

This paper focuses on the unified modeling suite for annular flow that the authors have developed and continue to develop. The annular flow suite currently includes models to predict the void fraction, the entrained liquid fraction, and the wall shear stre ...

Taylor & Francis Inc2016

An indirect criterion for the laminar to turbulent flow transition in shear-driven annular liquid films

John Richard Thome, Andrea Cioncolini

An indirect method to identify the laminar to turbulent flow transition in shear-driven annular liquid films has been developed and used, together with literature measurements of the velocity profile, to approximately resolve the near wall structure in she ...

Pergamon-Elsevier Science Ltd2015

Asymmetric annular flow in horizontal circular macro-channels: Basic modeling of liquid film distribution and heat transfer around the tube perimeter in convective boiling

John Richard Thome, Andrea Cioncolini

This paper presents the modeling of the liquid film distribution and heat transfer during convective boiling in horizontal, annular flows to be applied in such applications where non-uniform heat flux occurs. In general, prediction methods in the literatur ...

Pergamon-Elsevier Science Ltd2014

Liquid film circumferential asymmetry prediction in horizontal annular two-phase flow

John Richard Thome, Andrea Cioncolini

This study considers the prediction of the degree of asymmetry in the circumferential distribution of the liquid film in the tube cross section of horizontal annular gas-liquid two-phase flow, endemic of the lower region of this flow regime near the strati ...

Elsevier2013

Entrained liquid fraction prediction in adiabatic and evaporating annular two-phase flow

John Richard Thome, Andrea Cioncolini

A new method to predict the entrained liquid fraction in annular two-phase flow is presented. The underlying experimental database contains 2460 data points collected from 38 different literature studies for 8 different gas-liquid or vapor-liquid combinati ...

2012

Void fraction prediction in annular two-phase flow

John Richard Thome, Andrea Cioncolini

A new method to predict the void fraction in annular two-phase flow in macroscale and microscale channels is presented. The underlying experimental database contains 2673 data points collected from 29 different literature studies for 8 different gas-liquid ...

2012

Algebraic turbulence modeling in adiabatic and evaporating annular two-phase flow

John Richard Thome, Andrea Cioncolini

The study considers algebraic turbulence modeling in adiabatic and evaporating annular two-phase flow, focusing in particular on momentum and heat transfer (so-called 'convective boiling') through the annular liquid film. In contrast with single-phase wall ...

2011

Void Fraction Prediction in Annular Two-Phase Flow Using an Algebraic Turbulence Model

John Richard Thome, Andrea Cioncolini

The study considers the prediction of the main flow parameters of adiabatic annular two-phase flows, focusing in particular on the void fraction. Recently developed models to predict the entrained liquid fraction, the wall shear stress and the velocity pro ...

2010

Prediction of the entrained liquid fraction in vertical annular gas–liquid two-phase flow

John Richard Thome, Andrea Cioncolini

The study considers the prediction of the entrained liquid fraction in adiabatic gas-liquid annular two-phase flow in vertical pipes. Nine empirical correlations have been tested against an experimental data bank drawn together in this study containing 150 ...

Elsevier2010