Search Results - "Lucas, Dirk"

A literature review on mechanisms and models for the coalescence process of fluid particles by Liao, Yixiang, Lucas, Dirk

“…This paper presents a literature review on the mechanisms and models of coalescence of fluid particles. For the mechanisms, five categories are summarized,…”
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A literature review of theoretical models for drop and bubble breakup in turbulent dispersions by Liao, Yixiang, Lucas, Dirk

“…This paper presents a literature review on mechanisms and models for the breakage of bubbles and drops (fluid particles) in turbulent dispersions. For the…”
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Unified modeling of bubbly flows in pipes, bubble columns, and airlift columns by Rzehak, Roland, Ziegenhein, Thomas, Kriebitzsch, Sebastian, Krepper, Eckhard, Lucas, Dirk

“…Multiphase CFD simulation is a valuable tool in process engineering which is particularly useful to study new reactor concepts and their scale-up from…”
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Possibilities and Limitations of CFD Simulation for Flashing Flow Scenarios in Nuclear Applications by Liao, Yixiang, Lucas, Dirk

“…The flashing phenomenon is relevant to nuclear safety analysis, for example by a loss of coolant accident and safety release scenarios. It has been studied…”
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Comparative study of ultrafast X-ray tomography and wire-mesh sensors for vertical gas–liquid pipe flows by Banowski, Manuel, Beyer, Matthias, Szalinski, Lutz, Lucas, Dirk, Hampel, Uwe

“…Wire-mesh sensors and ultrafast X-ray tomography were developed to investigate two-phase flows with high spatial and temporal resolution. In this study we…”
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Modeling of the Free-Surface Vortex-Driven Bubble Entrainment into Water by Putra, Ryan Anugrah, Lucas, Dirk

“…The recently developed GENTOP (Generalized Two Phase Flow) concept, which is based on the multifield Euler‒Euler approach, was applied to model a free-surface…”
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Prediction of Bubble Departure in Forced Convection Boiling with a Mechanistic Model That Considers Dynamic Contact Angle and Base Expansion by Setoodeh, Hamed, Ding, Wei, Lucas, Dirk, Hampel, Uwe

“…A mechanistic model for bubble dynamics in flow boiling that is based on a force balance approach for a growing bubble is introduced. It considers the…”
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Evaluation of Interfacial Heat Transfer Models for Flashing Flow with Two-Fluid CFD by Liao, Yixiang, Lucas, Dirk

“…The complexity of flashing flows is increased vastly by the interphase heat transfer as well as its coupling with mass and momentum transfers. A reliable heat…”
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Grid studies for the simulation of resolved structures in an Eulerian two-fluid framework by Gauss, Friederike, Lucas, Dirk, Krepper, Eckhard

“…•Elaborated Eulerian two-fluid methods may predict multiphase flow with large differences in interfacial length scales.•A study on the grid requirements of…”
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Evaluation of two-group interfacial area transport equation model for vertical small diameter pipes against high-resolution experimental data by Dave, Akshay J., Manera, Annalisa, Beyer, Matthias, Lucas, Dirk, Bernard, Matthew

“…Two-phase flow is ubiquitous in industrial, chemical and thermal plants alike. The current state-of-the-art system-code model for predicting fluid transport in…”
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The pseudo-homogeneous flow regime in large-scale bubble columns: experimental benchmark and computational fluid dynamics modeling by Giorgio Besagni, Fabio Inzoli, Thomas Ziegenhein, Dirk Lucas

“…A precise prediction of the fluid dynamics in bubble columns is of fundamental importance to correctly design “industrial-scale” reactors. It is known that the…”
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Effect of an Electromagnetic Brake on the Turbulent Melt Flow in a Continuous-Casting Mold by Miao, Xincheng, Timmel, Klaus, Lucas, Dirk, Ren, Zhongmin, Eckert, Sven, Gerbeth, Gunter

“…This article presents numerical and experimental investigations with respect to the fluid flow in the continuous-casting process under the influence of an…”
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Numerical modeling of horizontal stratified two-phase flows using the AIAD model by Yan, Hongjie, Zhang, Huimin, Höhne, Thomas, Liao, Yixiang, Lucas, Dirk, Liu, Liu

“…In nuclear reactor safety research, the countercurrent gas-liquid two-phase flow in the hot leg of a pressurized water reactor (PWR) has attracted considerable…”
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The Bubble Shape in Contaminated Bubbly Flows: Results for Different NaCl Concentrations in Purified Water by Ziegenhein, Thomas, Lucas, Dirk, Besagni, Giorgio, Inzoli, Fabio

“…The bubble shape influences the transfer of momentum and heat/mass between the bubble and the surrounding fluid as well as the flow field around the bubble…”
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Modelling of Passive Heat Removal Systems: A Review with Reference to the Framatome BWR Reactor KERENA: Part II by Manthey, René, Viereckl, Frances, Moonesi Shabestary, Amirhosein, Zhang, Yu, Ding, Wei, Lucas, Dirk, Schuster, Christoph, Leyer, Stephan, Hurtado, Antonio, Hampel, Uwe

“…Passive safety systems are an important feature of currently designed and constructed nuclear power plants. They operate independent of external power supply…”
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Effects of inlet condition on flow structure of bubbly flow in a rectangular column by Mohd. Akbar, Mohd. Hatta bin, Hayashi, Kosuke, Lucas, Dirk, Tomiyama, Akio

“…Experiments on bubbly flows in a rectangular column are carried out to investigate effects of inlet condition on flow structure. An air diffuser having 35…”
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Computational modelling of flash boiling flows: A literature survey by Liao, Yixiang, Lucas, Dirk

“…•A literature review on the physics and modelling of flashing flows is presented.•Mono-disperse two-fluid model is the general framework for flashing…”
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Correlation for countercurrent flow limitation in a PWR hot leg by Murase, Michio, Tomiyama, Akio, Lucas, Dirk, Kinoshita, Ikuo, Utanohara, Yoichi, Yanagi, Chihiro

“…Numerical simulations were done to evaluate countercurrent flow limitation (CCFL) characteristics in a pressurized water reactor (PWR) hot leg with the…”
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Evolution of the structure of a gas–liquid two-phase flow in a large vertical pipe by Prasser, Horst-Michael, Beyer, Matthias, Carl, Helmar, Gregor, Sabine, Lucas, Dirk, Pietruske, Heiko, Schütz, Peter, Weiss, Frank-Peter

“…The evolution of the structure of a gas–liquid flow in a large vertical pipe of 195 mm inner diameter was investigated at the TOPFLOW test facility in…”
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A review on numerical modelling of flashing flow with application to nuclear safety analysis by Liao, Yixiang, Lucas, Dirk

“…•A review on numerical modelling of nuclear flashing flows is provided.•Consideration of interphase slip with a two-fluid model is often necessary.•Thermal,…”
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