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Title: A simple delay model for two-phase flow dynamics

Abstract

A model based in delay equations for density-wave oscillations is presented. High Froude numbers and moderate ones were considered. The equations were numerically analyzed and compared with more sophisticated models. The influence of the gravity term was studied. Different kinds of behavior were found, particularly sub-critical and super-critical Hopf bifurcations. Moreover the present approach can be used to better understand the complicated dynamics of boiling flows systems.

Authors:
; ;  [1]
  1. Centro Atomico Bariloche (Argentina)
Publication Date:
Research Org.:
Nuclear Regulatory Commission, Washington, DC (United States). Div. of Systems Technology; American Nuclear Society, La Grange Park, IL (United States); American Inst. of Chemical Engineers, New York, NY (United States); American Society of Mechanical Engineers, New York, NY (United States); Canadian Nuclear Society, Toronto, ON (Canada); European Nuclear Society (ENS), Bern (Switzerland); Atomic Energy Society of Japan, Tokyo (Japan); Japan Society of Multiphase Flow, Kyoto (Japan)
OSTI Identifier:
111458
Report Number(s):
NUREG/CP-0142-Vol.4; CONF-950904-Vol.4
ON: TI95017080; TRN: 95:021646
Resource Type:
Conference
Resource Relation:
Conference: 7. international topical meeting on nuclear reactor thermal-hydraulics (Nureth-7), Saratoga Springs, NY (United States), 10-15 Sep 1995; Other Information: PBD: Sep 1995; Related Information: Is Part Of Proceedings of the 7th International Meeting on Nuclear Reactor Thermal-Hydraulics NURETH-7. Sessions 17-24; Block, R.C.; Feiner, F. [American Nuclear Society, La Grange Park, IL (United States)]; PB: 825 p.
Country of Publication:
United States
Language:
English
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; TWO-PHASE FLOW; MATHEMATICAL MODELS; REACTOR CHANNELS; FROUDE NUMBER; HEAT TRANSFER; HYDRAULICS; OSCILLATIONS; TWO-DIMENSIONAL CALCULATIONS

Citation Formats

Clausse, A., Delmastro, D.F., and Juanico`, L.E. A simple delay model for two-phase flow dynamics. United States: N. p., 1995. Web.
Clausse, A., Delmastro, D.F., & Juanico`, L.E. A simple delay model for two-phase flow dynamics. United States.
Clausse, A., Delmastro, D.F., and Juanico`, L.E. Fri . "A simple delay model for two-phase flow dynamics". United States. doi:. https://www.osti.gov/servlets/purl/111458.
@article{osti_111458,
title = {A simple delay model for two-phase flow dynamics},
author = {Clausse, A. and Delmastro, D.F. and Juanico`, L.E.},
abstractNote = {A model based in delay equations for density-wave oscillations is presented. High Froude numbers and moderate ones were considered. The equations were numerically analyzed and compared with more sophisticated models. The influence of the gravity term was studied. Different kinds of behavior were found, particularly sub-critical and super-critical Hopf bifurcations. Moreover the present approach can be used to better understand the complicated dynamics of boiling flows systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Sep 01 00:00:00 EDT 1995},
month = {Fri Sep 01 00:00:00 EDT 1995}
}

Conference:
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