Igor Bolotnov

Associate Professor of Nuclear Engineering, Joint Faculty Appointment with ORNL

  • 518-542-8939
  • Burlington Laboratory 2142
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Dr. Bolotnov holds a joint faculty appointment with Oak Ridge National Laboratory. He is a member of CASL, the DOE-funded energy innovation hub. He is also a member of Thermal Hydraulics Methods focus area, where he collaborates with his colleagues from ORNL, LANL, MIT and TAMU to develop a new generation of multiphase boiling flow models based new experimental and direct numerical simulation data.  His research includes:

Using multiscale approach for nuclear reactors simulations The required technological and safety standards for future Gen-IV Reactors can only be achieved if advanced simulation capabilities become available, which combine high performance computing with the necessary level of modeling detail and high accuracy of predictions. Interaction between different numerical codes working on various scales (DNS, RaNS, solid/structure interaction) on different parts of multiphase three-dimensional transient problem (such as nuclear reactor accident scenario) gives the ability to develop new multiscale multi-field models and simulations in various areas of nuclear engineering.

Development of new spectral cascade transfer multiphase flow turbulence models The modeling of multiphase flows has wide range of applications in the fields of nuclear, chemical, biomedical engineering. Recent advances in the development of single and two-phase spectral turbulent models show promising results in extending those models to more complex type of two-phase bubbly flows (such as non-homogeneous conduit flows, boundary layer flows, free shear flows) and multi-component flows. The new generation of the advanced turbulence two-phase flow models will provide unprecedented abilities in designing new generation of safe and powerful nuclear power plants.

Direct numerical simulation of single and multiphase turbulent flows DNS approach recently became an affordable tool in obtaining multiphase turbulence data for testing and validation of the new spectral turbulence models. Performing the DNS of multiphase flows using a state of the art massively parallel finite element based code (PHASTA) provides a unique opportunity to contribute to the development of new closure laws necessary for successful application of computational multiphase fluid dynamics in nuclear reactor thermal-hydraulics analysis.

Education

Ph.D. 2008

Engineering Physics

Rensselaer Polytechnic Institute

M.S. 2003

Engineering Physics

Rensselaer Polytechnic Institute

B.S. 2001

Applied Mathematics and Informatics

Bashkir State University, Russia

Research Description

Dr. Bolotnov is interested in using multiscale approaches for nuclear reactor simulations, development of new spectral cascade transfer multiphase flow turbulence models, and direct numerical simulation of single and multiphase turbulent flows.

Publications

Wall-resolved spectral cascade-transport turbulence model
Brown, C. S., Shaver, D. R., Lahey, R. T., & Bolotnov, I. A. (2017), Nuclear Engineering and Design, 320, 309-324.
Coalescence prevention algorithm for level set method
Talley, M. L., Zimmer, M. D., & Bolotnov, I. A. (2017), Journal of Fluids Engineering-Transactions of the ASME, 139(8).
Evaluation of bubble-induced turbulence using direct numerical simulation
Feng, J. Y., & Bolotnov, I. A. (2017), International Journal of Multiphase Flow, 93, 92-107.
Evaluation of bubble-induced turbulence using direct numerical simulation
Feng, J. Y., & Bolotnov, I. A. (2017), International Journal of Multiphase Flow, 93, 92-107.
Interfacial force study on a single bubble in laminar and turbulent flows
Feng, J. Y., & Bolotnov, I. A. (2017), Nuclear Engineering and Design, 313, 345-360.
Interface tracking simulations of bubbly flows in PWR relevant geometries
Fang, J., Rasquin, M., & Bolotnov, I. A. (2017), Nuclear Engineering and Design, 312, 205-213.
Spectral analysis of single- and two-phase bubbly DNS in different geometries
Brown, C. S., & Bolotnov, I. A. (2016), Nuclear Science and Engineering, 184(3), 363-376.
Estimation of shear-induced lift force in laminar and turbulent flows
Thomas, A. M., Fang, J., Feng, J. Y., & Bolotnov, I. A. (2015), Nuclear Technology, 190(3), 274-291.
DNS of turbulent flow with hemispherical wall roughness
Mishra, A. V., & Bolotnov, I. A. (2015), Journal of Turbulence, 16(3), 225-249.
Influence of bubbles on the turbulence anisotropy
Bolotnov, I. A. (2013), Journal of Fluids Engineering-Transactions of the ASME, 135(5).

View all publications via NC State Libraries

Grants

Computationally Efficient Prediction of Containment Thermal Hydraulics Using Multi-Scale Simulation: Feasibility Study (FY 16 NUC)
US Dept. of Energy (DOE)(12/23/15 - 9/30/16)
Development and Application of a Data-Driven Methodology for Validation of Risk Informed Safety Margin Characterization Models
US Dept. of Energy (DOE)(10/01/16 - 9/30/19)
Development and Validation of a Societal Risk Goal for Nuclear Power Plant Safety (2014-2015)
US Dept. of Energy (DOE)(11/04/14 - 9/30/15)
Turbulent Multiphase Flows for Nuclear Reactor Safety.
US Dept. of Energy (DOE) - Advanced Scientific Computing Research (ASCR)(7/01/14 - 6/30/15)
Simulation and Modeling of the Interactions of Liquid Turbulent Eddies and Gas Bubbles
National Science Foundation (NSF)(7/15/13 - 6/30/17)
Academic Career Development For a Nuclear Engineering Junior Faculty at North Carolina State University
US Nuclear Regulatory Commission(4/01/12 - 3/31/16)
Simulation of Turbulent Multiphase Flows For Nuclear Reactor Safety
US Dept. of Energy (DOE)(1/01/12 - 12/31/14)
Consortium for Advanced Simulations for Light Water Reactors (CASL) - Oak Ridge National laboratory
US Dept. of Energy (DOE)(11/30/-1 - 9/30/19)
Academic Development Program for a Junior Faculty in NC State's Department of Nuclear Engineering (2010)
US Nuclear Regulatory Commission(5/01/10 - 4/30/14)
Establishment, Planning and Development Activities for Academic Center of Excellence in Advanced Modeling and Simulation at North Carolina State University
US Dept. of Energy (DOE)(2/01/05 - 9/30/14)