Author
T.G. Karayiannis
Other affiliations: London South Bank University
Bio: T.G. Karayiannis is an academic researcher from Brunel University London. The author has contributed to research in topics: Heat transfer & Boiling. The author has an hindex of 19, co-authored 39 publications receiving 1385 citations. Previous affiliations of T.G. Karayiannis include London South Bank University.
Papers
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TL;DR: In this paper, the authors present a review of the experimental and numerical results available in the open literature for the prediction of single-phase heat transfer in micro-channels and present a concise set of recommendations for purposes of performance and design.
260 citations
TL;DR: In this paper, a review of the physical models and advanced methods used in computational studies of gas-liquid two-phase jet flows encountered in atomization and spray processes is presented.
255 citations
TL;DR: In this article, the authors investigated flow boiling flow patterns in four circular tubes with internal diameters of 1.10, 2.88 and 4.26mm in vertical upward two-phase flow using R134a as the working fluid.
179 citations
TL;DR: A detailed comparison of flow boiling heat transfer results in a stainless steel tube of 1.1 mm internal diameter with results of a three-zone flow model is presented in this paper.
80 citations
TL;DR: In this article, a 3D numerical simulation of bubble growth from nucleation to full confinement was performed using the volume of fluid (VOF) method in commercial CFD code FLUENT.
67 citations
Cited by
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01 Aug 1953
TL;DR: In this paper, a solution for the radius of the vapor bubble as a function of time is obtained which is valid for sufficiently large radius, since the radius at which it becomes valid is near the lower limit of experimental observation.
Abstract: The growth of a vapor bubble in a superheated liquid is controlled by three factors: the inertia of the liquid, the surface tension, and the vapor pressure. As the bubble grows, evaporation takes place at the bubble boundary, and the temperature and vapor pressure in the bubble are thereby decreased. The heat inflow requirement of evaporation, however, depends on the rate of bubble growth, so that the dynamic problem is linked with a heat diffusion problem. Since the heat diffusion problem has been solved, a quantitative formulation of the dynamic problem can be given. A solution for the radius of the vapor bubble as a function of time is obtained which is valid for sufficiently large radius. This asymptotic solution covers the range of physical interest since the radius at which it becomes valid is near the lower limit of experimental observation. It shows the strong effect of heat diffusion on the rate of bubble growth. Comparison of the predicted radius‐time behavior is made with experimental observations in superheated water, and very good agreement is found.
729 citations
01 Jan 2016
TL;DR: The principles of enhanced heat transfer is universally compatible with any devices to read and is available in the book collection an online access to it is set as public so you can get it instantly.
Abstract: Thank you very much for reading principles of enhanced heat transfer. As you may know, people have look numerous times for their chosen books like this principles of enhanced heat transfer, but end up in malicious downloads. Rather than reading a good book with a cup of coffee in the afternoon, instead they are facing with some infectious bugs inside their desktop computer. principles of enhanced heat transfer is available in our book collection an online access to it is set as public so you can get it instantly. Our books collection spans in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Merely said, the principles of enhanced heat transfer is universally compatible with any devices to read.
553 citations
TL;DR: Horizon 2020 Project “Design for Resource and Energy efficiency in CerAMic Kilns- DREAM Project (DREAM Project), Horizon 2020 Industrial THERMal energy recovery conversion and management (Grant No:680599) and ESPRC (EP/P004636/1).
Abstract: Horizon 2020 Project “Design for Resource and Energy efficiency in CerAMic Kilns- DREAM Project (Grant No: 723641), Horizon 2020 Industrial THERMal energy recovery conversion and management (Grant No:680599) and ESPRC (Grant No: EP/P004636/1)
464 citations
TL;DR: An up-to-date overview of both technological and chemical aspects of liquid phase oxidation chemistry in continuous-flow microreactors is given, including the use of oxygen, hydrogen peroxide, ozone and other oxidants in flow.
Abstract: Continuous-flow liquid phase oxidation chemistry in microreactors receives a lot of attention as the reactor provides enhanced heat and mass transfer characteristics, safe use of hazardous oxidants, high interfacial areas, and scale-up potential. In this review, an up-to-date overview of both technological and chemical aspects of liquid phase oxidation chemistry in continuous-flow microreactors is given. A description of mass and heat transfer phenomena is provided and fundamental principles are deduced which can be used to make a judicious choice for a suitable reactor. In addition, the safety aspects of continuous-flow technology are discussed. Next, oxidation chemistry in flow is discussed, including the use of oxygen, hydrogen peroxide, ozone and other oxidants in flow. Finally, the scale-up potential for continuous-flow reactors is described.
402 citations
TL;DR: In this paper, a comprehensive review of published articles addressing passive enhancement of pool boiling using surface modification techniques is provided, including macroscale, microscale, and nanoscale surfaces, as well as multiscale (hybrid-scale), and hybrid-wettability techniques.
343 citations