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Cryogenic Two-Phase Flow

Cryogenic Two-Phase Flow
Author: N. N. Filina
Publisher: Cambridge University Press
Total Pages: 152
Release: 1996-05-31
Genre: Science
ISBN: 9780521481922

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Cryogenic systems that involve two-phase (vapor-liquid) flows are widely used in industries such as aerospace, metallurgy, power engineering, and food production, as well as in high energy physics research. The purpose of this book is to describe characteristic features of cryogenic systems involving two-phase flow, create mathematical models of these systems, and then show how the models may be used to develop optimal designs for practical cryogenic systems. The models are examined using analytical and numerical techniques, and then the predictions are compared to experimental measurements. Since transient phenomena can produce severe and unexpected effects in cryogenic systems, the authors pay particular attention to this important topic. Examples in the book are drawn from cryogenic fluid transport, gasification, and the stabilization of superconducting magnets. Much of this work is related to the development of large Russian systems in the areas of space technology, energy research, and particle physics. This book, the first devoted solely to cryogenic two-phase flow, will be a valuable reference for cryogenic engineers and scientists.


Critical Two-Phase Flow for Cryogenic Fluids (Classic Reprint)

Critical Two-Phase Flow for Cryogenic Fluids (Classic Reprint)
Author: Raymond Virgil Smith
Publisher: Forgotten Books
Total Pages: 86
Release: 2017-10-28
Genre:
ISBN: 9781528425247

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Excerpt from Critical Two-Phase Flow for Cryogenic Fluids This work presents a state-of-the-art survey intended to be useful to a designer of equipment involving two - phase flow of cryogenic fluids. It is desirable to assess the probability of critical, or choking, flow in such a system and, if possible, estimate the critical flow rate. The literature is surveyed, primarily since Smith and the predictive results for several analytical models are evaluated and com pared with experimental data. These results are discussed; however, no firm conclusions are reached because, often, the spread of experimental data is equivalent to that of the predictive results from the models. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


Cryogenic Two-phase Flow and Phase-change Heat Transfer in Microgravity

Cryogenic Two-phase Flow and Phase-change Heat Transfer in Microgravity
Author: Cheng-Feng Tai
Publisher:
Total Pages:
Release: 2008
Genre:
ISBN:

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The Cut-cell approach is applied to handle nonrectangular cells cut by the interfacesand boundaries in SIMCC. With the Cut-cell approach, the conservative properties can be maintained better near the interface. This research will focus on developing the numerical techniques to simulate the two-phase flow and phase change phenomena for one of the major flow patterns in film boiling, the inverted annular flow.


Two-Phase Flow Modeling of Cryogenic Loading Operations

Two-Phase Flow Modeling of Cryogenic Loading Operations
Author: Dmitry G Luchinsky
Publisher:
Total Pages: 0
Release: 2022
Genre: Electronic books
ISBN:

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We consider problem of modeling and controlling two-phase cryogenic flows during ground loading operations. We introduce homogeneous moving front and separated two-phase flow solvers that are capable of fast and accurate online predictions of flow dynamics during chilldown and transfer under nominal conditions and in the presence of faults. Concise sets of cryogenic correlations are proposed in each case. We present results of application of proposed solvers to the analysis of chilldown in large-scale experimental cryogenic transfer line build in Kennedy Space Center. We discuss optimization of parameters of cryogenic models obtained using general inferential framework and an application of the solvers to the fault detection and evaluation based on D-matrix approach. It is shown that solver,Äôs predictions are in good agreement with experimental data obtained for liquid nitrogen flow in nominal regime and in the presence of faults.


Cryogenic Two-phase Flow During Chilldown

Cryogenic Two-phase Flow During Chilldown
Author: Jelliffe Kevin Jackson
Publisher:
Total Pages:
Release: 2006
Genre:
ISBN:

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It is also found that by utilizing a simple model that includes the effect of flow structure and incorporating the enhancement provided by the local heat flux, significant improvement in the predictive capabilities of the Müller-Steinhagen and Jamialahmadi correlation for nucleate flow boiling is achieved.


Experiments in Cryogenic Two Phase Flow

Experiments in Cryogenic Two Phase Flow
Author: Christopher James Velat
Publisher:
Total Pages:
Release: 2004
Genre:
ISBN:

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Temperature profiles were produced from 6 thermocouples that were placed on the external wall surface of the transfer line and insulated with Melamine foam insulation. Chilldown times were computed from temperature profiles and an approximate Leidenfrost temperature of -98°C was observed. Large circumferential temperature gradients were observed during chilldown and moderate axial gradients were also observed during the passing of the quenching front. The mass flux of the experiments had a considerable impact on the chilldown time and magnitude of the temperature gradients. The experimental facility and the current data will be used in continued research to develop a comprehensive and fundamentally based numerical chilldown model.