Journal ArticleDOI
Modeling of thermal hydraulic instabilities in single heated channel loop during startup transients
TLDR
In this paper, a thermal hydraulics computer code was developed to simulate the geysering instability in a natural circulation system starting from subcooled conditions and to assess the impact of the system pressure and channel inlet subcooling on the inception of instability.About:
This article is published in Nuclear Engineering and Design.The article was published on 1999-09-11. It has received 30 citations till now. The article focuses on the topics: Thermal hydraulics & Subcooling.read more
Citations
More filters
Journal ArticleDOI
Review of research on flow instabilities in natural circulation boiling systems
TL;DR: In this paper, the state-of-the-art of flow instabilities in natural circulation boiling loops has been reviewed by reviewing a number of contributions made in the past three decades.
Journal ArticleDOI
Modeling of flashing-induced instabilities in the start-up phase of natural-circulation BWRs using the two-phase flow code FLOCAL
TL;DR: In this article, the authors report on the modeling and simulation of flashing-induced instabilities in natural circulation systems, with special emphasis on natural-circulation boiling water reactors (BWRs).
Journal ArticleDOI
Three-dimensional flow pattern visualization and bubble size distributions in stationary and transient upward flashing flow
TL;DR: In this paper, an experimental three-dimensional reconstruction and visualization of stationary and transient flashing flow in a vertical pipe (47 mm diameter) is presented by means of wire-mesh sensors.
Journal ArticleDOI
Stability of Natural-Circulation-Cooled Boiling Water Reactors During Startup: Experimental Results
TL;DR: In this paper, the authors studied the characteristics of flashing-induced instabilities, which are of importance during the startup phase of natural-circulation boiling water reactors, and found that increasing pressure has a stabilizing effect, reducing the operational region in which instabilities occur.
Journal ArticleDOI
Measurements in a low temperature CO2-driven geysering well, viewed in relation to natural geysers
TL;DR: A literature review on natural geysers and geysering flows in engineering plants, such as nuclear reactors and rocket-engine fuel systems, is presented in this paper, where parallels are observed in the development of understanding in these different fields.
References
More filters
Journal ArticleDOI
Average volumetric concentration in two-phase flow systems
Novak Zuber,J. A. Findlay +1 more
Journal ArticleDOI
One-dimensional drift-flux model and constitutive equations for relative motion between phases in various two-phase flow regimes
Takashi Hibiki,Mamoru Ishii +1 more
TL;DR: In this article, the kinematic constitutive equation for the drift velocity has been studied for various two-phase flow regimes, and a comparison of the model with various experimental data over various flow regimes and a wide range of flow parameters shows a satisfactory agreement.
Book ChapterDOI
Das Aehnlichkeitsgesetz bei Reibungsvorgängen in Flüssigkeiten
TL;DR: In den meisten Interpolationsformeln der Hydraulik, die die Druckvertilung in bewegtem Wasser betreffen, wahlt man als ersten Ansatz die Proportionalitat der Druckhohe as mentioned in this paper.