Works (45)

2023 journal article

Direct numerical simulation of heat transfer on a deformable vapor bubble rising in superheated liquid

PHYSICS OF FLUIDS, 35(2).

By: J. Li*, Y. Liao*, I. Bolotnov, P. Zhou*, D. Lucas*, Q. Li*, L. Gong*

Sources: Web Of Science, ORCID
Added: March 20, 2023

2022 article

A Perspective on Data-Driven Coarse Grid Modeling for System Level Thermal Hydraulics

Iskhakov, A. S., Tai, C.-K., Bolotnov, I. A., & Dinh, N. T. (2022, September 10). NUCLEAR SCIENCE AND ENGINEERING, Vol. 9.

By: A. Iskhakov, C. Tai, I. Bolotnov & N. Dinh

author keywords: Data-driven methods; coarse grid modeling; system thermal hydraulics; machine learning; multiscale bridging
Sources: Web Of Science, ORCID
Added: September 9, 2022

2022 journal article

An adaptive knowledge-based data-driven approach for turbulence modeling using ensemble learning technique under complex flow configuration: 3D PWR sub-channel with DNS data

NUCLEAR ENGINEERING AND DESIGN, 393.

By: Y. Zhu, N. Dinh, N. Saini & I. Bolotnov

author keywords: Ensemble learning; Machine learning; Turbulence; RANS
Sources: Web Of Science, ORCID
Added: August 15, 2022

2022 article

Complex bubble deformation and break-up dynamics studies using interface capturing approach (vol 3, pg 139, 2021)

Fan, Y., Fang, J., & Bolotnov, I. (2022, June). EXPERIMENTAL AND COMPUTATIONAL MULTIPHASE FLOW, Vol. 4, pp. 191–191.

By: Y. Fan, J. Fang & I. Bolotnov

Sources: Web Of Science, ORCID
Added: December 12, 2022

2022 journal article

Development of machine learning framework for interface force closures based on bubble tracking data

NUCLEAR ENGINEERING AND DESIGN, 399.

By: C. Tai, I. Evdokimov, F. Schlegel, I. Bolotnov & D. Lucas

author keywords: Direct numerical simulation; Data-driven modeling; Interfacial force modeling; Machine learning; Eulerian-Eulerian approach
Sources: Web Of Science, ORCID
Added: November 28, 2022

2022 journal article

Direct Numerical Simulation of Bubble Formation Through a Submerged "Flute" With Experimental Validation

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 144(2).

By: N. Pillai, N. Sponsel, K. Stapelmann & I. Bolotnov

Sources: Web Of Science, ORCID
Added: December 20, 2021

2022 journal article

High-fidelity pool boiling simulations on multiple nucleation sites using interface capturing method

NUCLEAR ENGINEERING AND DESIGN, 399.

By: Y. Fan, M. Li, W. Pointer & I. Bolotnov

author keywords: Pool boiling; Nucleation site interaction; High-fidelity simulation; Level-set method; Unstructured mesh
Sources: Web Of Science, ORCID
Added: January 3, 2023

2022 journal article

Plasma breakdown in bubbles passing between two pin electrodes

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 55(47).

By: N. Pillai, N. Sponsel, J. Mast, M. Kushner, I. Bolotnov & K. Stapelmann

author keywords: plasma; low-temperature; DNS; bubbles; simulation
Sources: Web Of Science, ORCID
Added: September 28, 2022

2022 article

Selected papers from the 2020 International Topical Meeting on Advances in Thermal Hydraulics (ATH'20) Foreword

Bolotnov, I., & Benhamadouche, S. (2022, August 3). NUCLEAR TECHNOLOGY, Vol. 208, pp. III-III.

By: I. Bolotnov & S. Benhamadouche*

Sources: Web Of Science, ORCID
Added: July 26, 2022

2021 article

Detailed Analysis of the Effects of Spacer Grid and Mixing Vanes on Turbulence in a PWR Subchannel Under DFFB Conditions Based on DNS Data

Saini, N., & Bolotnov, I. A. (2021, December 8). NUCLEAR TECHNOLOGY, Vol. 12.

By: N. Saini & I. Bolotnov

author keywords: Turbulence; invariant analysis; high-fidelity simulations; spacer grids
Sources: Web Of Science, ORCID
Added: December 20, 2021

2021 journal article

Evaluation of Length Scales and Meshing Requirements for Resolving Two-Phase Flow Regime Transitions Using the Level Set Method

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 143(6).

By: M. Zimmer & I. Bolotnov

Sources: Web Of Science, ORCID
Added: May 24, 2021

2021 journal article

Progress in multiphase computational fluid dynamics

NUCLEAR ENGINEERING AND DESIGN, 374.

By: R. Lahey*, E. Baglietto* & I. Bolotnov

Sources: Web Of Science, ORCID
Added: April 26, 2021

2021 journal article

Two-Phase Turbulence Statistics from High Fidelity Dispersed Droplet Flow Simulations in a Pressurized Water Reactor (PWR) Sub-Channel with Mixing Vanes

FLUIDS, 6(2).

By: N. Saini & I. Bolotnov

author keywords: dispersed droplet flow regime; interface capturing simulations; turbulence; high-resolution data collection
Sources: ORCID, Web Of Science
Added: February 11, 2021

2020 journal article

Annular Flow Simulation Supported by Iterative In-Memory Mesh Adaptation

NUCLEAR SCIENCE AND ENGINEERING, 194(8-9), 676–689.

By: J. Fang, M. Purser*, C. Smith*, R. Balakrishnan*, I. Bolotnov & K. Jansen*

author keywords: Annular flow; in-memory adaptation; level set method
Sources: Web Of Science, ORCID
Added: June 8, 2020

2020 journal article

Exploring Two-Phase Flow Regime Transition Mechanisms Using High-Resolution Virtual Experiments

NUCLEAR SCIENCE AND ENGINEERING, 194(8-9), 708–720.

By: M. Zimmer & I. Bolotnov

author keywords: Two-phase flow; flow regime transition; level set method; PHASTA code; virtual experiments
Sources: Web Of Science, ORCID
Added: March 23, 2020

2020 journal article

Interface capturing simulations of bubble population effects in PWR subchannels

NUCLEAR ENGINEERING AND DESIGN, 365.

By: J. Cambareri n, J. Fang & I. Bolotnov

author keywords: DNS; Interface capturing; PWR subchannel
Sources: Web Of Science, ORCID
Added: August 10, 2020

2020 review

Interface-Resolved Simulations of Reactor Flows

[Review of ]. NUCLEAR TECHNOLOGY, 206(2), 133–149.

By: J. Fang, J. Cambareri n, M. Li, N. Saini & I. Bolotnov

author keywords: Two-phase flow; direct numerical simulation; interface tracking; subchannel geometry
Sources: Web Of Science, ORCID
Added: February 3, 2020

2020 journal article

Machine-learning based error prediction approach for coarse-grid Computational Fluid Dynamics (CG-CFD)

PROGRESS IN NUCLEAR ENERGY, 118.

By: B. Hanna n, N. Dinh, R. Youngblood & I. Bolotnov

author keywords: Coarse grid (mesh); CFD; Machine learning; Discretization error; Big data; Artificial neural network; Random forest; Data-driven
Sources: Web Of Science, ORCID
Added: January 21, 2020

2020 article

Simulation scaling studies of reactor core two-phase flow using direct numerical simulation

Cambareri, J. J., Fang, J., & Bolotnov, I. A. (2020, March). NUCLEAR ENGINEERING AND DESIGN, Vol. 358.

By: J. Cambareri n, J. Fang & I. Bolotnov

author keywords: DNS; Interface tracking; PWR subchannel; Scaling studies
Sources: Web Of Science, ORCID
Added: February 10, 2020

2020 journal article

The evaporation and condensation model with interface tracking

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 150.

By: M. Li & I. Bolotnov

author keywords: Two-phase flow; Interface tracking; Heat transfer; Phase-change
Sources: Web Of Science, ORCID
Added: March 30, 2020

2019 journal article

Development of a New Contact Angle Control Algorithm for Level-Set Method

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 141(6).

By: M. Li, K. Zeng, L. Wonnell* & I. Bolotnov

Sources: Web Of Science, ORCID
Added: May 13, 2019

2019 journal article

Slug-to-churn vertical two-phase flow regime transition study using an interface tracking approach

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 115, 196–206.

By: M. Zimmer & I. Bolotnov

author keywords: Vertical two-phase flow regime transition; Slug flow; Churn-turbulent flow; Direct numerical simulation; Level set method; Interface tracking method
Sources: Web Of Science, ORCID
Added: June 17, 2019

2018 journal article

Direct numerical simulation of reactor two-phase flows enabled by high-performance computing

NUCLEAR ENGINEERING AND DESIGN, 330, 409–419.

By: J. Fang*, J. Cambareri n, C. Brown n, J. Feng*, A. Gouws, M. Li, I. Bolotnov

author keywords: Two-phase flow; DNS; Interface tracking method; Bubble tracking method
Sources: Web Of Science, ORCID
Added: August 6, 2018

2018 journal article

Effect of the wall presence on the bubble interfacial forces in a shear flow field

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 99, 73–85.

By: J. Feng & I. Bolotnov

author keywords: Interfacial forces; Wall distance; Deformable bubble; Shear flow
Sources: Web Of Science, ORCID
Added: August 6, 2018

2018 journal article

Interface Tracking Investigation of Geometric Effects on the Bubbly Flow in PWR Subchannels

Nuclear Science and Engineering, 193(1-2), 46–62.

By: J. Fang*, J. Cambareri n, M. Rasquin*, A. Gouws n, R. Balakrishnan*, K. Jansen*, I. Bolotnov

author keywords: Direct numerical simulation; interface tracking; bubble tracking; PWR subchannel
Sources: Crossref, ORCID
Added: February 21, 2020

2018 journal article

Numerical comparison of bubbling in a waste glass melter

ANNALS OF NUCLEAR ENERGY, 113, 380–392.

author keywords: Waste glass melter model; Computational fluid dynamics; Waste vitrification; Interface capturing methods; Two-phase flow modeling; Bubbling
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 journal article

Bubble tracking analysis of PWR two-phase flow simulations based on the level set method

NUCLEAR ENGINEERING AND DESIGN, 323, 68–77.

By: J. Fang & I. Bolotnov

author keywords: DNS; Subchannel; Interface tracking; Bubble tracking
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 journal article

Coalescence Prevention Algorithm for Level Set Method

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 139(8).

By: M. Talley, M. Zimmer & I. Bolotnov

Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 journal article

Evaluation of bubble-induced turbulence using direct numerical simulation

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 93, 92–107.

By: J. Feng & I. Bolotnov

author keywords: DNS; Deformable bubble; Turbulent intensity; Homogeneous turbulent flow; Bubble-induced turbulence
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 article

High Current C-11 Gas Target Design and Optimization Using Multi-Physics Coupling

WTTC16: PROCEEDINGS OF THE 16TH INTERNATIONAL WORKSHOP ON TARGETRY AND TARGET CHEMISTRY, Vol. 1845.

By: J. Peeples, M. Magerl, E. O'Brien, J. Doster, I. Bolotnov, B. Wieland, M. Stokely

Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 journal article

Interface tracking simulations of bubbly flows in PWR relevant geometries

NUCLEAR ENGINEERING AND DESIGN, 312, 205–213.

By: J. Fang, M. Rasquin* & I. Bolotnov

Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 journal article

Interfacial force study on a single bubble in laminar and turbulent flows

NUCLEAR ENGINEERING AND DESIGN, 313, 345–360.

By: J. Feng & I. Bolotnov

author keywords: Direct numerical simulation; Interface tracking method; Drag force; Lift force; Homogeneous turbulent flow; Shear turbulent flow; Bubble deformability
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 journal article

Multiphase turbulence mechanisms identification from consistent analysis of direct numerical simulation data

Nuclear Engineering and Technology, 49(6), 1318–1325.

By: B. Magolan*, E. Baglietto*, C. Brown n, I. Bolotnov, G. Tryggvason* & J. Lu*

author keywords: Budget Equations; Bubble-Induced Turbulence; DNS; M&C2017; Multiphase CFD
Sources: Crossref, ORCID
Added: February 21, 2020

2017 journal article

Wall-resolved spectral cascade-transport turbulence model

NUCLEAR ENGINEERING AND DESIGN, 320, 309–324.

By: C. Brown, D. Shaver*, R. Lahey* & I. Bolotnov

author keywords: Spectral-cascade; Spectral turbulence model; Channel flow; DNS; CFD
Sources: Web Of Science, ORCID
Added: August 6, 2018

2016 conference paper

Interface tracking simulation of phase-change phenomena: boiling and condensation verification

Proceedings of the asme fluids engineering division summer meeting, 2016, vol 1a.

By: M. Li & I. Bolotnov

Sources: NC State University Libraries, ORCID
Added: August 6, 2018

2016 article

Spectral Analysis of Single- and Two-Phase Bubbly DNS in Different Geometries

Brown, C. S., & Bolotnov, I. A. (2016, November). NUCLEAR SCIENCE AND ENGINEERING, Vol. 184, pp. 363–376.

By: C. Brown & I. Bolotnov

author keywords: Multiphase DNS; energy spectrum; spectral analysis
Sources: Web Of Science, ORCID
Added: August 6, 2018

2015 article

DNS of turbulent flow with hemispherical wall roughness

JOURNAL OF TURBULENCE, Vol. 16, pp. 225–249.

By: A. Mishra & I. Bolotnov

author keywords: turbulence; roughness; DNS
Sources: Web Of Science, ORCID
Added: August 6, 2018

2015 article

ESTIMATION OF SHEAR-INDUCED LIFT FORCE IN LAMINAR AND TURBULENT FLOWS

Thomas, A. M., Fang, J., Feng, J., & Bolotnov, I. A. (2015, June). NUCLEAR TECHNOLOGY, Vol. 190, pp. 274–291.

By: A. Thomas n, J. Fang, J. Feng & I. Bolotnov

author keywords: multiphase turbulence; direct numerical simulations; lift force
Sources: Web Of Science, ORCID
Added: August 6, 2018

2013 article

COUPLED DNS/RANS SIMULATION OF FISSION GAS DISCHARGE DURING LOSS-OF-FLOW ACCIDENT IN GENERATION IV SODIUM FAST REACTOR

Behafarid, F., Shaver, D., Bolotnov, I. A., Antal, S. P., Jansen, K. E., & Podowski, M. Z. (2013, January). NUCLEAR TECHNOLOGY, Vol. 181, pp. 44–55.

By: F. Behafarid*, D. Shaver*, I. Bolotnov, S. Antal*, K. Jansen* & M. Podowski*

author keywords: multiscale computer simulations; gas-liquid two-phase flow; Generation IV SFR
Sources: Web Of Science, ORCID
Added: August 6, 2018

2013 journal article

Influence of Bubbles on the Turbulence Anisotropy

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 135(5).

By: I. Bolotnov

Sources: Web Of Science, ORCID
Added: August 6, 2018

2012 conference paper

Influence of bubbles on the turbulence anisotropy

Proceedings of the asme fluids engineering division summer meeting, 2012, vol 1, pts a and b, symposia, 695–702.

By: I. Bolotnov

Sources: NC State University Libraries, ORCID
Added: August 6, 2018

2012 journal article

Multidimensional analysis of fission gas transport following fuel element failure in sodium fast reactor

NUCLEAR ENGINEERING AND DESIGN, 247, 136–146.

By: I. Bolotnov, S. Antal*, K. Jansen* & M. Podowski*

Sources: Web Of Science, ORCID
Added: August 6, 2018

2011 journal article

Detached direct numerical simulations of turbulent two-phase bubbly channel flow

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 37(6), 647–659.

By: I. Bolotnov, K. Jansen*, D. Drew*, A. Oberai*, R. Lahey* & M. Podowski*

author keywords: Two-phase bubbly flows; Direct numerical simulation; Turbulence
Sources: Web Of Science, ORCID
Added: August 6, 2018

2010 journal article

Spectral analysis of turbulence based on the DNS of a channel flow

Computers & Fluids, 39(4), 640–655.

By: I. Bolotnov, R. Lahey*, D. Drew*, K. Jansen* & A. Oberai*

author keywords: Turbulent channel flow; Spectral analysis; Turbulent kinetic energy; DNS
Sources: Crossref, ORCID
Added: September 10, 2020

2008 journal article

A spectral turbulent cascade model for single- and two-phase uniform shear flows

Journal of Turbulence, 9, N26.

By: I. Bolotnov, R. Lahey*, D. Drew*, K. Jansen* & A. Oberai*

author keywords: uniform shear flow; spectral cascade model; two-phase flow
Sources: Crossref, ORCID
Added: September 10, 2020

Employment

2011 - present

NC State University Raleigh, NC, US
Professor Nuclear Engineering

2008 - 2010

Rensselaer Polytechnic Institute Troy, NY, US
Post-doctoral Research Associate Mechanical, Aerospace and Nuclear Engineering

Education

2003 - 2008

Rensselaer Polytechnic Institute Troy, NY, US
Ph.D. in Engineering Physics Mechanical, Aerospace and Nuclear Engineering

2002 - 2003

Rensselaer Polytechnic Institute Troy, NY, US
M.S. in Engineering Physics Mechanical, Aerospace and Nuclear Engineering

1997 - 2002

Bashkir State University Ufa, RU
Diploma (B.S.) in Applied Mathematics and Infomatics Mathematics