Publications de Francesco Agostini

Multiphysics simulation of corona discharge induced ionic wind

Ivica Stevanovic, Nicola Parolini, Francesco Agostini

Ionic wind devices or electrostatic fluid accelerators are becoming of increasing interest as tools for thermal management, in particular for semiconductor devices. In this work, we present a numerical model for predicting the performance of such devices; ...

American Institute of Physics2013

Boiling on a Tube Bundle: Part II-Heat Transfer and Pressure Drop

John Richard Thome, Navid Borhani, Eugene van Rooyen, Francesco Agostini

An extensive experimental study was undertaken to measure nucleate pool boiling heat transfer coefficients, local bundle boiling heat transfer coefficients, and two-phase bundle pressure drops for R134a and R236fa on one plain tube bundle configuration. Th ...

2012

Boiling on a Tube Bundle: Part I-Flow Visualization and Onset of Dryout

John Richard Thome, Navid Borhani, Eugene van Rooyen, Francesco Agostini

A novel visualization method was developed and implemented in a refrigerant-flooded evaporator tube bundle. Specifically, a method to visualize the two-phase flow inside plain tube bundles was developed using a dummy tube with a tubular glass section for v ...

2012

Boiling on a tube bundle : heat transfer, pressure drop and flow patterns

Francesco Agostini

The complexity of the two-phase flow in a tube bundle presents important problems in the design and understanding of the physical phenomena taking place. The working conditions of an evaporator depend largely on the dynamics of the two-phase flow that in t ...

EPFL2008