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SCIENTIFIC PAPERS

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Proceedings of IBRAE RAS, Issue 16:  Models and methods for calculation of multidimensional two-phase flows in the presence of surface tension forcesProceedings of IBRAE RAS, Issue 16: Models and methods for calculation of multidimensional two-phase flows in the presence of surface tension forces

Ed. by L. A. Bolshov

An overview of current status numerical modeling of compressible multiphase flows for nuclear industry applications is reviewed. Also numerical methodology for modeling of complex shock-wave processes in two-phase media in the presence of surface tension forces is presented. The methodology allows to model phenomena of boiling, evaporation and condensation by means of the method of discrete equations using the HLLC solver for aligning the temperature and Gibbs, taking into account peculiarities two-phase problems. The method is implemented in the form of a three-dimensional parallel code that can be used for calculations on clusters, for example “Lomonosov” (Moscow State University, Moscow). The features of the developed technique and its advantages in a comparison with others are discussed. Examples of its application to solve specific problems are demonstrated.
For students, postgraduates and specialists in the field of numerical methods for solving differential equations of mathematical physics.

Bibliographical reference:

Proceedings of IBRAE RAS / Ed. by L. A. Bolshov; Nuclear Safety Institute of the Russian Academy of Sciences (IBRAE RAN). — Moscow, 2007— . Issue 16: Models and methods for calculation of multidimensional two-phase flows in the presence of surface tension forces / Aksenova A. E., Leonov A. A., Makarevich A. A., Chudanov V. V. — 2016. — 368 p.


Proceedings of IBRAE RAS, Issue 15:  Development of Emergency Response and Radiation Monitoring SystemsProceedings of IBRAE RAS, Issue 15: Development of Emergency Response and Radiation Monitoring Systems

Ed. by L. A. Bolshov, R. V. Arutyunyan

A 10-year IBRAE RAN experience in the field of development and establishment of radiation emergency response systems and radiation monitoring systems is described and summarized in the present collection. The principles of modeling and construction of forecast systems to assess radiation situation parameters and decision-making support systems on the population protection in case of radiation emergency are described. The issues of preparation and conduct of exercises and drills aimed at enhancement of emergency preparedness are discussed. The facility-level and territorial radiation monitoring systems are described along with the principles of their construction, used measuring equipment and software, and data transfer systems.
For students, post-graduate students and personnel engaged in emergency preparedness and response activity.

Bibliographical reference

Proceedings of IBRAE RAS / Ed. by L. A. Bolshov ; Nuclear Safety Institute (IBRAE) RAS. — Moscow : Nauka, 2007— . Issue 15 : Development of Emergency Response and Radiation Monitoring Systems /
Ed. by R. V. Arutyunyan. — 2013. — 315 p. : ill. — ISBN 978-5-02-039111-6 (bound).


Proceedings of IBRAE RAS, Issue 14: Methods of direct numerical simulation in two-phase mediaProceedings of IBRAE RAS, Issue 14: Methods of direct numerical simulation in two-phase media

Ed. by L. A. Bolshov

The two-phase compressible flows numerical models equipped with Godunov method, using the precise or approximate Riemann solvers, are considered for calculations of shock-wave processes in twophase mixtures.

The method to improve the robustness of numerical algorithm for mechanical equilibrium two-phase model, using pressure non equilibrium model with relaxation, is explained. Two different numerical approaches to simulate evaporation and condensation phenomena underneath from process intensity and velocity, using reactive Riemann solver or special relaxation procedure for temperatures and chemical potentials of two-phase mixture components, are discussed.

The issue is intended for students, post-graduate students and specialists in numerical methods for
solving differential equations of mathematical physics.

Bibliographical reference

Nuclear Safety Institute (IBRAE) RAS. — Moscow : Nauka, 2007— .  Issue 14 : Methods of direct numerical simulation in two-phase media / À. À. Leonov, V. V. Chudanov, À. Å. Aksenova. — 2013. — 197 p. : ill. — ISBN 978-5-02-038150-6 (bound).


Proceedings of IBRAE RAS Issue 13 : Accident at «Fukushima-1» npp: response experience and lessonsProceedings of IBRAE RAS Issue 13 : Accident at «Fukushima-1» npp: response experience and lessons

Ed. by L. A. Bolshov, R. V. Arutyunyan

In this book, we present the results of evaluation and prediction of the accident development at the "Fukushima-1" NPP and its radiation consequences for the population and territories of Japan and Russia completed immediately following March 11, 2011, within the acute period. Predictions are compared against the actual data as of the end of 2012. Aimed at the experts in the problems of NPP safety, radiation safety, and protection of the population and territories. Recommended for students and postgraduates.

Bibliographical reference

Nuclear Safety Institute (IBRAE) RAS. — Moscow : Nauka, 2007— .Issue 13 : Accident at «Fukushima-1» npp: response experience and lessons [in Russian] / Ed. by R. V. Arutyunyan. — 2013. — 246 p. : ill. — ISBN 978-5-02-038468-2 (bound).


Proceedings of IBRAE RAS Issue 12: Integral Codes Development and Application for NPP Safety AnalisisProceedings of IBRAE RAS Issue 12: Integral Codes Development and Application for NPP Safety Analisis

Ed. by L. A. Bolshov, R. V. Arutyunyan

This collection of papers includes materials dealing with simulation of various aspects of off-normal processes in the course of severe accidents using integral computational codes. Basic models being elements of the SOCRAT integral code are provided which describe the processes occurring at severe damages of reactor core. Examples practical application of integral computational codes for safety analysis at nuclear power plants with VVER are cited.

The assumed target for the issue are students and specialists in simulation radioecology of off-normal processes.

Bibliographical reference

Nuclear Safety Institute (IBRAE) RAS. — Moscow : Nauka, 2007— .  Issue 12 : Integral Codes Development and Application for NPP Safety Analisis [in Russian] / Ed. by R. V. Arutyunyan. — 2011. — 304 p. : ill. — ISBN 978-5-02-037971-8 (bound).


Proceedings of IBRAE RAS Issue 11: Radioecology IssuesProceedings of IBRAE RAS Issue 11: Radioecology Issues

Ed. by L. A. Bolshov, I. I. Linge

Materials reflect results of fundamental investigations and application studies in the field of assessment and regulation of human and environment radiation impact, development of strategies of application and effectiveness analysis of rehabilitation actions, mathematical modeling of migration of radioactive substances.

The assumed target for the issue are students and specialists in radioecology.

Bibliographical reference

Proceedings of IBRAE RAS / Ed. by L. A. Bolshov ; Nuclear Safety Institute (IBRAE) RAS. — Moscow : Nauka, 2007— . Issue 11 : Radioecology Issues / Ed. by I. I. Linge. — 2009. — 444 p. : ill. — ISBN 978-5-02-037457-7 (bound).


Proceedings of IBRAE RAS Issue 10: Safety and Reliability of the GasTransport SystemProceedings of IBRAE RAS Issue 10: Safety and Reliability of the GasTransport System

Ed. by L.A. Bolshov, V.M. Goloviznin

This issue is devoted to the problems of reliability and safety of gas industry ob jects providing. These problems have much in common with ones in nuclear indus try and this allows to use the same methods and approaches. The one of the most important problems discussing in the articles in this issue is the problem of detecting and control of natural gas leakage at different elements of process flow sheet. A set of original methods for solving these problems has been developed by authors. Some of them are realized in computer codes and are used in practice.

The issue should be interested for students and specialists on analyses and as sessment od industry reliability and safety.

Bibliographical reference

Proceedings of IBRAE RAS / Ed. by L.A. Bolshov ; Nuclear Safety Institute (IBRAE) RAS. — Moscow : Nauka, 2007— . Issue 10 : Safety and Reliability of the GasTransport System / Ed. by V.M. Goloviznin. — 2009. — 143 p. : ill. — ISBN 9785020374553 (bound).


Proceedings of IBRAE RAS Issue 9: Modeling of Radionuclide Transport in the EnvironmentProceedings of IBRAE RAS Issue 9: Modeling of Radionuclide Transport in the Environment

Ed. by L.A. Bolshov, R.V. Arutunjan

This issue is devoted to modeling of atmospheric dispersion of pollutions including radioactive ones in gas and/or aerosol form. Atmospheric modeling is widely used now for predicions of radiation situation for decision support in crisis situation and for safety analysis in projecting and licensing process.

The topics of articles correspond to main approaches to atmospheric transport modeling for various conditions and scales. Some of described methods form the basis of computer codes used in practice. The NOSTRADAMUS code was certified by the Russian regulatory service and used in NPP safety analysis and licensing.

The assumed target for the issue are students and specialists in atmospheric transport and radiation safety.

Bibliographical reference

Proceedings of IBRAE RAS / Ed. by L. A. Bolshov ; Nuclear Safety Institute (IBRAE) RAS. — Moscow : Nauka, 2007— .
Issue 9 : Modeling of Radionuclide Transport in the Environment [in Russian] / Ed. by R. V. Arutunjan. — 2008. — 229 p. : ill. — ISBN 978- 5-02-036954-2 (bound).


Proceedings of IBRAE RAS, Issue 8: Free convection and heat transfer in fluids with internal heat  sources heterogeneous mediaProceedings of IBRAE RAS, Issue 8: Free convection and heat transfer in fluids with internal heat sources heterogeneous media

Ed. by L. A. Bolshov

The results of investigations of free convection in heat-generating fluid are presented. The works were performed at Nuclear Safety Institute of Russian Academy of Sciences under the program of severe accidents at NPP’s. The collection consists of 13 papers. In the first seven papers, classification of heat-transfer regimes, integral regularities for heat flux to the boundary, dependence of free convection on cavity geometry and heat source distribution are obtained. In addition, a model is developed and numerical calculations are conducted for two-phase flow in porous heat-generating media. In the next five papers, turbulent convection, heat transfer from a stratified melt, heating up and melting of core, and corium-concrete interactions are modeled using modern CFD-codes. In the last paper thermodynamic model is developed for phase stratification of multicomponent fluid with internal heat sources.

The assumed target for the issue are students and specialists in heat and mass transfer phenomena.

Bibliographical reference

Nuclear Safety Institute (IBRAE) RAS. — Moscow : Nauka, 2007— . Issue 8 : Free convection and heat transfer in fluids with internal heat sources heterogeneous media / Ed. by L.A. Bolshov. — 2008. — 223 p. : ill. — ISBN 978-5-02-036953-5 (bound)

 


Proceedings of IBRAE RAS, Issue 7: Physical models for anomalous contaminant transport in highly  heterogeneous mediaProceedings of IBRAE RAS, Issue 7: Physical models for anomalous contaminant transport in highly heterogeneous media

Ed. by L.A. Bolshov

The results of investigations of anomalous contaminant transport in highly heterogeneous media are represented. The work was performed at the laboratory of theoretical physics of Nuclear Safety Institute of Russian Academy of Sciences. The collection of works consists of 10 papers. In the first three papers the problem of random advection with long range velocity correlations is studied. Next five papers contain the results of anomalous transport regimes caused by sharply contrast structure of the media.

The last two papers are devoted to a role of strong spatial fluctuations of medium characteristics. The results obtained give the basis for the development of methods for the assessment of waste storage reliability in rock geological media.

The assumed target for the issue are students and specialists in mass transport phenomena.

Bibliographical reference

Nuclear Safety Institute (IBRAE) RAS. — Moscow : Nauka, 2007— . Issue 7 : Physical models for anomalous contaminant transport in highly heterogeneous media / Ed. by L.A. Bolshov. — 2008. — 128 p. : ill. — ISBN 978-5-02-036952-8 (bound).\

 


Proceedings of IBRAE RAS Issue 6: Mechanics of prestressed concrete containment for NPPProceedings of IBRAE RAS Issue 6: Mechanics of prestressed concrete containment for NPP

Ed. by L. À. Bolshov, R. V. Arutyunyan

In the collection of papers the materials based on the experimental, real and calculation data obtained by authors in course of research into the stress strain state of the containment are presented. In the papers the results of analysis of operational abilities under different normal and accident situations are considered and discussed. Important scientific and practical conclusions are made for improvement of NPP operation safety.

The volume is intended for research and design organizations specialists, for universities lecturers, and engineers of fuel and power industry. It can be used as a textbook for undergraduate and postgraduate students of civil engineering institutes.

Bibliographical reference

Proceedings of IBRAE RAS / Ed. by L. À. Bolshov ; Nuclear Safety Institute (IBRAE) RAS. — Moscow : Nauka, 2007— . Issue 6 : Mechanics of prestressed concrete containment for NPP / Ed. by R. V. Arutyunyan. — 2008. — 151 p. : ill. — ISBN 978-5-02-087031-9 (bound).


Proceedings of IBRAE RAS, Issue 5: Models for Fission Products Release from Irradiated UO2 FuelProceedings of IBRAE RAS, Issue 5: Models for Fission Products Release from Irradiated UO2 Fuel

Ed. by L.A. Bolshov, R.V. Arutyunyan

The main models of the mechanistic code MFPR are described. Exhaustive description of fissiongas behaviour in grain and out of grain is given in relation with individual validation results on analytical experiments under various conditions (steady irradiation, transient, post-irradiation annealing).
It is shown that microscopic defects in the UO2 crystal structure can strongly influence fissiongas transport out of grains and release from fuel pellets.

The mechanistic description of chemicallyactive-elements behaviour is also presented. It is based on complex association of diffusionvaporization
mechanism involving multi-phase and multi-component thermo-chemical equilibrium at the grain boundary with accurate calculation of fuel oxidation. Examples of application to integral experiments performed at high temperatures in oxidising and oxidising/reducing gas atmospheres, show the possibilities of the code in the frame of severe-accident interpretation. 

The assumed target for the issue are students and specialists in nuclear materials research and NPP safety analysis.

Bibliographical reference

Nuclear Safety Institute (IBRAE) RAS. — Moscow: Nauka, 2007— .Issue 5 : Models for Fission Products Release from Irradiated UO2 Fuel / Ed. by R.V. Arutyunyan. — 2008. — 157 p. : ill. — ISBN 978-5-02-036951-1 (bound).


Proceedings of IBRAE RAS, Issue 4: Numerical methods to simulate shock wave processes in the two-phase mixturesProceedings of IBRAE RAS, Issue 4: Numerical methods to simulate shock wave processes in the two-phase mixtures

Ed. by L. A. Bolshov, V. M. Goloviznin

The possibility of using the Piecewise-Parabolic-approximation Method (PPM) to solve the advection equation and hyperbolic-like systems is considered. New approaches to simulation of shockwave processes in two-phase media are described, namely, the application of non-linear difference schemes with correction of flows to calculations of two-phase compressible gas-dynamic flows. The possibility of simulation using the PPM and the exact Riemann solver of two-component and twophase compressible media, taking also into account the micro-inertia phenomenon, is discussed.


The assumed target for the issue are students and specialists in numerical methods for solving differential equations of mathematical phisics.

Bibliographical reference

Nuclear Safety Institute (IBRAE) RAS. — Moscow :Nauka, 2007— . Issue 4 : Numerical methods to simulate shock wave processes in the two-phase mixtures / Ed. by V. M. Goloviznin. — 2008. — 119 p. : ill. — ISBN 978-5-02-036950-4 (bound).

 


Proceedings of IBRAE RAS Issue 3: Methods of computational hydrodynamics for the for the safety analysis of TEK’s objects [in Russian]Proceedings of IBRAE RAS Issue 3: Methods of computational hydrodynamics for the for the safety analysis of TEK’s objects [in Russian]

Ed. by L.A. Bolshov


The collection volume is devoted to the integrated approach for solving of computational fluid dynamics problems  developed in Nuclear Safety Institute RAS. The approach includes: methods of construction of calculated areas and computing grids; new highly effective methods and algorithms for solving of computational fluid dynamics problems, and also results of testing of developed algorithms and numerical methods on experimental data and benchmark tests, accessible from the literature. The authors offer an original technique of construction of computing grids for areas, projected with the help modern CAD systems, effective approaches for modeling a turbulence both in 3D single-phase, and in twophase flows on enough detailed grids. The results of numerical simulation such important a class of appearances as bubble flows are submitted. The shown level of agreement between numerical predictions and experimental data specifies effectiveness of the offered approach. The book is recommended for the experts in the field of nuclear  engineering and adjacent areas.

Bibliographical reference

Methods of computational hydrodynamics for the for the safety analysis of TEK’s objects [in Russian] : Proceedings of Nuclear Safety Institute RAS (IBRAE RAS) / Ed. by corresponding member of RAS L. A. Bolshov. — Iss. 3. — Moscow : Nauka, 2008. — 207 p. : ill.


Proceedings of IBRAE RAS Issue 2: Numerical Investigations of Naturally-convective Flows in Solidifying LiquidProceedings of IBRAE RAS Issue 2: Numerical Investigations of Naturally-convective Flows in Solidifying Liquid

Ed. by L.A. Bolshov, V.F. Strizhov

In the course of performed investigations several important outcomes were achieved and a series of interesting mechanisms were identified that may be of use while developing simplified codes for analysis of individual severe-accident phases for cases of retention of molten fuel-containing masses inside the vessel. The first section describes numerical methods for solution of 2D hydrodynamics problems for solidifying liquid, the second section provides the results of parametric numerical investigation of main heat- and masstransfer mechanisms of heat-generating liquid for the case of melt retention by reactor vessel. The attention is focused on studying major heat- and mass-transfer mechanisms of heat-generating liquid taking account of phase transitions through the application of a computational algorithm based on the fictitious-area method under “flow function, vorticity” variables. Effectiveness of calculations, being an advantage of the approach used, enables application of a unified computational algorithm within arbitrary areas for the category of problems under consideration. Owing to its originality and efficiency, the offered approach may be recommended to specialists of nuclear-power industry and adjacent areas.

Bibliographical reference

Numerical Investigations of Naturally-convective Flows in Solidifying Liquid / Edited by Professor V. F. Strizhov // Proceedings of Nuclear Safety Institute RAS (IBRAE RAS) / Edited by corresponding member of RAS L. A. Bolshov. — Issue 2. — Moscow: Nauka, 2007. — 190 p.: illustrations.


Proceedings of IBRAE RAS Issue 1: Models for the Fuel Rod Materials Interactions during Reactor Core Degradation under Sever Accident Conditions at NPP (in English)Proceedings of IBRAE RAS Issue 1: Models for the Fuel Rod Materials Interactions during Reactor Core Degradation under Sever Accident Conditions at NPP (in English)

Ed. by L.A. Bolshov

A set of mechanistic models for the main degradation phenomena: cladding oxidation, hydrogen absorption and mechanical deformation, UO2 and ZrO2 dissolution by molten Zr, was developed in the Nuclear Safety Institute (IBRAE) RAS and combined in the code package SVECHA. In order to be applied to mechanistic modeling of various single-rod degradation experiments (including the FZK QUENCH tests), the models were tightly coupled in the advanced mechanistic code SVECHA/QUENCH. The models were also implemented in various system-level SA codes: ICARE2 (IRSN, France), SCDAP/RELAP5 (NRC, USA), the Russian SA codes RATEG/SVECHA and SOCRAT. The book presents the main models of the code package SVECHA and the single-rod code SVECHA/QUENCH.

Bibliographical reference

Models for the Fuel Rod Materials Interactions during Reactor Core Degradation under Sever Accident Conditions at NPP (in English). Edited by Professor V.F. Strizhov. — Proceedings of Nuclear Safety Institute RAS (IBRAE RAS). Edited by corresponding member of RAS L.A. Bolshov. Issue 1. — Moscow: Nauka, 2007. — 127 p.: illustrations.

 


 Investigation of the channels of excitation and decay of the anomalously low-energy isomeric level 3/2+ (3.5±1.0 eV) in the Th-229 nucleus

International Investigation Project, approved by INTAS-RFBR in 1995 (reference number 95-IN-RU-828)

 

Project Coordinator: Romain Coussement, Professor, Director of Instituut voor Kern-en Strahlingsfysika, Katholieke Universiteit Leuven

Russian Principle Investigator: Tkalya Eugenii Viktorovich, Doctor of physical and mathematical sciences, Head of laboratory, Nuclear Safety Institute of RAS


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