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Review of available...
Review of available data for validation of nuresim two-phase CFD software applied to CHF investigations
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Bestion, D. (author)
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- Anglar, Henryk (author)
- KTH,Reaktorteknologi
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Péturaud, P. (author)
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Smith, B. (author)
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Krepper, E. (author)
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Moretti, F. (author)
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Macek, J. (author)
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(creator_code:org_t)
- 2007
- 2007
- English.
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In: Proceedings - 12th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-12. - 0894480588 - 9780894480584
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- The NURESIM Integrated Project of the 6th European Framework Program was envisaged to initiate the development of the next-generation common European Standard Software Platform for simulating nuclear reactors. The overall objective of NURESIM Thermalhydraulic sub-project is to improve the understanding and the predictive capabilities of the simulation tools for key two-phase flow thermal-hydraulic processes such as the Critical Heat Flux (CHF). A multi-scale analysis of reactor thermalhydraulics is envisaged and two-phase CFD is developed to allow some zoom on local processes when the resolution of system codes is not sufficient. Current industrial methods for CHF mainly use the sub-channel analysis and empirical CHF correlations based on large scale experiments having the real geometry of the reactor assembly. The NURESIM-TH activities regarding CHF aim at using two-phase CFD as a tool for understanding boiling flow processes, in order to subsequently help new fuel assembly design and to develop better CHF predictions in both PWR and BWR. A "Local Predictive Approach" may be envisaged for the long term where CHF empirical correlations would be based on local T/H parameters provided by CFD. This paper presents a review of existing experimental data bases which can be used for validation of the two-phase CFD application to Critical Heat Flux (CHF) investigations with respect to nuclear reactors. The phenomenology of DNB and Dry-Out are detailed identifying all basic flow processes which require a specific mode ling in CFD tool. The resulting program of work is given and the current state of the art of the modeling is presented.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Computational fluid dynamics
- Heat flux
- Industrial applications
- Nuclear reactors
Publication and Content Type
- ref (subject category)
- kon (subject category)
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