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Lucas E. O'Neill

Bio: Lucas E. O'Neill is an academic researcher from Purdue University. The author has contributed to research in topics: Boiling & Subcooling. The author has an hindex of 11, co-authored 20 publications receiving 253 citations.

Papers
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Journal ArticleDOI
TL;DR: A systematic overview of all key two-phase instabilities focusing on the fundamental mechanisms leading to their occurrence is provided, with emphasis on how these mechanisms may change depending on whether flow may be classified as macro- or micro-channel.

74 citations

Journal ArticleDOI
TL;DR: In this paper, the authors explore subcooled nucleate flow boiling of FC-72 in a rectangular channel having two opposite heating walls at different mass velocities and wall heat fluxes ranging from 42% to 45% of CHF.

43 citations

Journal ArticleDOI
TL;DR: Dynamic results for pressure drop, mass velocity, thermodynamic equilibrium quality, and heated wall temperature are explored to ascertain and analyze the dominant modes in which they oscillate to isolate instabilities present within the system due to physical interplay between thermodynamic and hydrodynamic effects.

31 citations

Journal ArticleDOI
TL;DR: In this paper, the influence of inlet subcooling and two-phase inlet on flow boiling heat transfer and critical heat flux in a horizontal 25mm wide by 5mm high rectangular channel for top wall heating, bottom wall heating and double-sided heating configurations using FC-72 as working fluid was explored.

30 citations

Journal ArticleDOI
TL;DR: This study concerns the development of a set of mechanistic criteria capable of predicting the flow conditions for which gravity independent flow condensation heat transfer can be achieved, and analysis of trends indicate use of the separated flow model with the gravity independence criteria captures physics missed by simpler approaches.

30 citations


Cited by
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01 Jan 2003
TL;DR: In this paper, a model of the Leidenfrost point (LFP), the minimum liquid/solid interface temperature required to support film boiling on a smooth surface, is presented, for impinging droplets and sprays, based on bubble nucleation, growth and merging criteria, as well as surface cavity size characterization.
Abstract: This study presents, for impinging droplets and sprays, a model of the Leidenfrost point (LFP); the minimum liquid/solid interface temperature required to support film boiling on a smooth surface. The present model is an extension of a previously developed sessile drop model, based on bubble nucleation, growth, and merging criteria, as well as surface cavity size characterization. The basic concept of the model is that for liquid/solid interface temperatures at and above the LFP, a sufficient number of cavities are activated and the bubble growth rates are sufficiently fast that a continuous vapor layer is established nearly instantaneously between the liquid and the solid. For impinging droplets, the influence of the rise in interfacial pressure created by the impact of the droplet with the surface, must be accounted for in determining fluid properties at the liquid-solid interface. The effect of droplet impact velocity on the LFP predicted by the model is verified for single impinging droplets, streams of droplets, as well as sprays

95 citations

Journal ArticleDOI
TL;DR: A systematic overview of all key two-phase instabilities focusing on the fundamental mechanisms leading to their occurrence is provided, with emphasis on how these mechanisms may change depending on whether flow may be classified as macro- or micro-channel.

74 citations

Journal ArticleDOI
TL;DR: In this paper, the authors explore subcooled nucleate flow boiling of FC-72 in a rectangular channel having two opposite heating walls at different mass velocities and wall heat fluxes ranging from 42% to 45% of CHF.

43 citations

Journal ArticleDOI
TL;DR: In this paper, a single-connected pore space model was established by reconstructing the real micron CT scanned images of carbonate rocks, and the VOF (volume of fluid) method using FSF (filtered surface force) formulation was adopted on OpenFOAM platform to simulate the oil-water two-phase flow process at the pore scale.

40 citations

Journal ArticleDOI
Aqiang Lin1, Qun Zheng1, Yuting Jiang1, Xiang Lin, Hai Zhang1 
TL;DR: In this article, a comparative study of performance characteristics in a gas turbine compressor before and after water injection into the air is carried out to explore the relationships between the transient characteristic and mist injection.

40 citations