Photo of Robert Zboray

Robert Zboray

Associate Professor

Affiliation(s):

  • Mechanical and Nuclear Engineering
  • Nuclear Engineering

233 Reber Building

rzz65@psu.edu

814-863-1323

Research Areas:

Nuclear Power, Nuclear Science, Thermal/Fluid Sciences

Interest Areas:

Radiation-based imaging methods, Gammas, X-ray and neutron tomography, Imaging detector technology, experimental nuclear thermal-hydraulics, single- and multi-phase flow measurement technology.

 
 

 

Education

  • MS, Nuclear Engineering, Technical University of Budapest, 1997
  • Ph D, Nuclear Engineering, Delft University of Technology, 2002

Publications

Journal Articles

  • Robert Adams and Robert Zboray, 2017, "Gamma radiography and tomography with a CCD camera and Co-60 source", Applied Radiation and Isotopes, 127, pp. 82-86
  • Robert Zboray, Christian Bolesch and Horst-Michael Prasser, 2017, "Development of neutron and X-ray imaging techniques for nuclear fuel bundle optimization", Nuclear Engineering and Design
  • Robert Zboray, R. Adams and Z. Kis, 2017, "Fast neutron radiography and tomography at a 10 MW research reactor beamline", Applied Radiation and Isotopes, 119, pp. 43-50
  • Horst-Michael Prasser, Christian Bolesch, Kerstin Cramer, Daisuke Ito, Petros Papadopoulos, Abhishek Saxena and Robert Zboray, 2016, "Bubbly, Slug, and Annular Two-Phase Flow in Tight-Lattice Subchannels", Nuclear Engineering and Technology, 48, (4), pp. 847-858
  • Julien Dupont, Guillaume Mignot, Robert Zboray and Horst-Michael Prasser, 2016, "Infrared film thickness measurement: comparison with cold neutron imaging", Journal of Nuclear Science and Technology, 53, (5), pp. 673-681
  • Abhishek Saxena, Robert Zboray and Horst-Michael Prasser, 2016, "Simulations and measurements of adiabatic annular flows in triangular, tight lattice nuclear fuel bundle model", Nuclear Engineering and Design, 299, pp. 163-173
  • Robert Adams, Robert Zboray and Horst-Michael Prasser, 2016, "A novel fast-neutron tomography system based on a plastic scintillator array and a compact D–D neutron generator", Applied Radiation and Isotopes, 107, pp. 1-7
  • Robert Zboray, Guillaume Mignot, Ralf Kapulla and Domenico Paladino, 2015, "Erosion and break-up of light-gas layers by a horizontal jet in a multi-vessel, large-scale containment test system", Nuclear Engineering and Design, 291, pp. 10-18
  • Robert Zboray, Volker Dangendorf, Ilan Mor, Benjamin Bromberger and Kai Tittelmeier, 2015, "Time-resolved fast-neutron radiography of air-water two-phase flows in a rectangular channel by an improved detection system", Review of Scientific Instruments, 86, (7), pp. 075103
  • Volker Dangendorf and Robert Zboray, 2015, "Potential and status in imaging with fast neutrons", Neutron News, 26, (2), pp. 27-30
  • Robert Adams, Lorenz Bort, Robert Zboray and Horst-Michael Prasser, 2015, "Development and characterization of a D–D fast neutron generator for imaging applications", Applied Radiation and Isotopes, 96, pp. 114-121
  • Robert Zboray, Volker Dangendorf, Ilan Mor, Kai Tittelmeier, Benjamin Bromberger and Horst-Michael Prasser, 2015, "Time-resolved Fast Neutron Radiography of Air-water Two-phase Flows", Physics Procedia, 69, pp. 551-555
  • Robert Zboray, I. Mor, V. Dangendorf, M. Stark, K. Tittelmeier, M. Cortesi and R. Adams, 2014, "High-frame rate imaging of two-phase flow in a thin rectangular channel using fast neutrons", Applied Radiation and Isotopes, 90, pp. 122-131
  • Robert Zboray, Robert Adams, Marco Cortesi and Horst-Michael Prasser, 2014, "Development of a fast neutron imaging system for investigating two-phase flows in nuclear thermal–hydraulic phenomena: A status report", Nuclear Engineering and Design, 273, pp. 10-23
  • M. Cortesi, V. Dangendorf, Robert Zboray and H.-M. Prasser, 2014, "A novel fast-neutron detector concept for energy-selective imaging and imaging spectroscopy", Review of Scientific Instruments, 85, (7), pp. 073305
  • Robert Adams, Robert Zboray, Marco Cortesi and Horst-Michael Prasser, 2014, "Conceptual design and optimization of a plastic scintillator array for 2D tomography using a compact D–D fast neutron generator", Applied Radiation and Isotopes, 86, pp. 63-70
  • Robert Zboray and H.-M. Prasser, 2013, "Measuring liquid film thickness in annular two-phase flows by cold neutron imaging", Experiments in Fluids, 54, (9)
  • Robert Zboray and Horst-Michael Prasser, 2013, "Neutron imaging of annular flows in a tight lattice fuel bundle model", Nuclear Engineering and Design, 262, pp. 589-599
  • Robert Zboray and Horst-Michael Prasser, 2013, "Optimizing the performance of cold-neutron tomography for investigating annular flows and functional spacers in fuel rod bundles", Nuclear Engineering and Design, 260, pp. 188-203
  • M. Cortesi, Robert Zboray, A. Kaestner and H.-M. Prasser, 2013, "Development of a cold-neutron imaging detector based on thick gaseous electron multiplier", Review of Scientific Instruments, 84, (2), pp. 023305
  • Domenico Paladino, Michele Andreani, Robert Zboray and Jörg Dreier, 2012, "Toward a CFD-grade database addressing LWR containment phenomena", Nuclear Engineering and Design, 253, pp. 331-342
  • Michele Andreani, Ralf Kapulla and Robert Zboray, 2012, "Gas stratification break-up by a vertical jet: Simulations using the GOTHIC code", Nuclear Engineering and Design, 249, pp. 71-81
  • J.L. Kickhofel, Robert Zboray, M. Damsohn, A. Kaestner, E.H. Lehmann and H.-M. Prasser, 2011, "Cold neutron tomography of annular coolant flow in a double subchannel model of a boiling water reactor", Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 651, (1), pp. 297-304
  • Nejdet Erkan, Ralf Kapulla, Guillaume Mignot, Robert Zboray and Domenico Paladino, 2011, "Experimental investigation of spray induced gas stratification break-up and mixing in two interconnected vessels", Nuclear Engineering and Design, 241, (9), pp. 3935-3944
  • Robert Zboray and Horst-Michael Prasser, 2011, "On the relevance of low side flows for thermal loads in T-junctions", Nuclear Engineering and Design, 241, (8), pp. 2881-2888
  • Robert Zboray, John Kickhofel, Manuel Damsohn and Horst-Michael Prasser, 2011, "Cold-neutron tomography of annular flow and functional spacer performance in a model of a boiling water reactor fuel rod bundle", Nuclear Engineering and Design, 241, (8), pp. 3201-3215
  • Robert Zboray and Domenico Paladino, 2010, "Experiments on basic thermalhydraulic phenomena relevant for LWR containments: Gas mixing and transport induced by buoyant jets in a multi-compartment geometry", Nuclear Engineering and Design, 240, (10), pp. 3158-3169
  • Domenico Paladino, Robert Zboray, Michele Andreani and Jörg Dreier, 2010, "Flow transport and mixing induced by horizontal jets impinging on a vertical wall of the multi-compartment PANDA facility", Nuclear Engineering and Design, 240, (8), pp. 2054-2065
  • Domenico Paladino, Robert Zboray and Olivier Auban, 2010, "The panda tests 9 and 9bis investigating gas mixing and stratification triggered by low momentum plumes", Nuclear Engineering and Design, 240, (5), pp. 1262-1270
  • Domenico Paladino, Robert Zboray, Pascal Benz and Michele Andreani, 2010, "Three-gas mixture plume inducing mixing and stratification in a multi-compartment containment", Nuclear Engineering and Design, 240, (2), pp. 210-220
  • C. Walker, M. Simiano, Robert Zboray and H.-M. Prasser, 2009, "Investigations on mixing phenomena in single-phase flow in a T-junction geometry", Nuclear Engineering and Design, 239, (1), pp. 116-126
  • G. Yadigaroglu, M. Simiano, R. Milenkovic, J. Kubasch, M. Milelli, Robert Zboray, F. De Cachard, B. Smith, D. Lakehal and B. Sigg, 2008, "CFD4NRS with a focus on experimental and CMFD investigations of bubbly flows", Nuclear Engineering and Design, 238, (3), pp. 771-785
  • O. Auban, Robert Zboray and D. Paladino, 2007, "Investigation of large-scale gas mixing and stratification phenomena related to LWR containment studies in the PANDA facility", Nuclear Engineering and Design, 237, (4), pp. 409-419
  • M. Simiano, Robert Zboray, F. de Cachard, D. Lakehal and G. Yadigaroglu, 2006, "Comprehensive experimental investigation of the hydrodynamics of large-scale, 3D, oscillating bubble plumes", International Journal of Multiphase Flow, 32, (10-11), pp. 1160-1181
  • Robert Zboray and F. de Cachard, 2005, "Simulating large-scale bubble plumes using various closure and two-phase turbulence models", Nuclear Engineering and Design, 235, (8), pp. 867-884
  • Olivier Auban, Domenico Paladino and Robert Zboray, 2004, "Experimental Investigation of Natural-Circulation Flow Behavior under Low-Power/Low-Pressure Conditions in the Large-Scale PANDA Facility", Nuclear Technology, 148, (3), pp. 294-312
  • Robert Zboray, Wilhelmus J. de Kruijf and Tim H. van der Hagen, 2004, "Investigating the Nonlinear Dynamics of Natural-Circulation, Boiling Two-Phase Flows", Nuclear Technology, 146, (3), pp. 244-256
  • Robert Zboray, W.J.M. de Kruijf and T.H.J.J. van der Hagen, 2003, "Stabilising boiling water reactors by optimising the position of the feedwater sparger", Nuclear Engineering and Design, 222, (1), pp. 54-67
  • A. Manera, Robert Zboray and T.H.J.J. van der Hagen, 2003, "Assessment of linear and non-linear autoregressive methods for BWR stability monitoring", Progress in Nuclear Energy, 43, (1-4), pp. 321-327
  • M Cortesi, Robert Zboray, R Adams, V Dangendorf, M Meshkian and H -M Prasser, , "Development of large-area THGEM detectors for investigation of thermal-hydraulic phenomena using neutron imaging", Journal of Instrumentation, 8, (10), pp. C10009-C10009
  • M Cortesi, Robert Zboray, R Adams, V Dangendorf, A Breskin, S Mayer, H Hoedlmoser and H -M Prasser, , "First studies of electron transport along small gas gaps of novel foil radiation converters for fast-neutron detectors", Journal of Instrumentation, 8, (01), pp. P01016-P01016

Conference Proceedings

  • Ralf Kapulla, Domenico Paladino, Guillaume Mignot, Robert Zboray and Sanjeev Gupta, 2009, "Break-Up of Gas Stratification in LWR Containment Induced by Negatively Buoyant Jets and Plumes", ASME
  • B. Niceno, Robert Zboray and H.-M. Prasser, 2009, "Experimental and Numerical Mixing Studies Relevant for Prediction of Thermal Loads in T-junctions", Begellhouse
  • Robert Zboray, Domenico Paladino and Olivier Auban, 2006, "Experiments on Gas Mixing and Stratification Driven by Jets and Plumes in Large-Scale, Multi-Compartment Geometries", ASME

Technical Reports

  • Robert Zboray, Wilhelmus J. M. de Kruijf, Tim H.J.J. van der Hagen and Rizwan-uddin, , "Experimental and Theoretical Analysis of Flashing Instability for Next Generation Natural Circulation Reactors"

Research Projects

Honors and Awards

Service

Service to Penn State:

Service to External Organizations:

 


 

About

The Department of Mechanical and Nuclear Engineering at Penn State is one of the nation’s largest and most successful engineering departments. We serve more than 1,000 undergraduate students and more than 330 graduate students

We offer B.S. degrees in mechanical engineering and nuclear engineering as well as resident (M.S., Ph.D.) and online (M.S., M.Eng.) graduate degrees in nuclear engineering and mechanical engineering. MNE's strength is in offering hands-on experience in highly relevant research areas, such as energy, homeland security, biomedical devices, and transportation systems.

Department of Mechanical and Nuclear Engineering

137 Reber Building

The Pennsylvania State University

University Park, PA 16802-4400

Phone: 814-865-2519