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1

Phase distribution analysis in an Electrical Submersible Pump (ESP) inlet handling water–air two-phase flow using Computational Fluid Dynamics (CFD)

Pineda, Hugo, Biazussi, Jorge, López, Fabio, Oliveira, Bruno, Carvalho, Ricardo D.M., Bannwart, Antonio Carlos, Ratkovich, Nicolas

Journal:

Journal of Petroleum Science and Engineering

Year:

2016

Language:

english

File:

PDF, 2.68 MB

english, 2016

2

Activated sludge rheology: A critical review on data collection and modelling

N. Ratkovich, W. Horn, F.P. Helmus, S. Rosenberger, W. Naessens, I. Nopens, T.R. Bentzen

Journal:

Year:

2013

Language:

english

File:

PDF, 1.53 MB

english, 2013

3

Empirical correlations and CFD simulations of vertical two-phase gas–liquid (Newtonian and non-Newtonian) slug flow compared against experimental data of void fraction

Ratkovich, N., Majumder, S.K., Bentzen, T.R.

Journal:

Chemical Engineering Research and Design

Year:

2013

Language:

english

File:

PDF, 933 KB

english, 2013

4

A strong form of residual finiteness for groups

Corson, Jon M, Ratkovich, Thomas J

Journal:

Journal of Group Theory

Year:

2006

Language:

english

File:

PDF, 108 KB

english, 2006

5

CFD modeling and validation for two-phase medium viscosity oil-air flow in horizontal pipes

Pinilla, Jorge Andres, Guerrero, Esteban, Pineda, Hugo, Posada, Raquel, Pereyra, Eduardo, Ratkovich, Nicolas

Journal:

Chemical Engineering Communications

Year:

2018

Language:

english

File:

PDF, 2.27 MB

english, 2018

6

Applying PBL methodologies to the chemical engineering courses: Unit operations and modeling and simulation, using a joint course project

Ballesteros, Miguel A., Daza, Miguel A., Valdés, Juan P., Ratkovich, Nicolás, Reyes, Luis H.

Journal:

Education for Chemical Engineers

Year:

2019

Language:

english

File:

PDF, 2.09 MB

english, 2019

7

Fabrication of carbon nanotube field-effect transistors in commercial silicon manufacturing facilities

Bishop, Mindy D., Hills, Gage, Srimani, Tathagata, Lau, Christian, Murphy, Denis, Fuller, Samuel, Humes, Jefford, Ratkovich, Anthony, Nelson, Mark, Shulaker, Max M.

Journal:

Nature Electronics

Year:

2020

File:

PDF, 2.28 MB

2020

8

Heat-and-mass transfer relationship to determine shear stress in tubular membrane systems

N. Ratkovich, I. Nopens

Journal:

International Journal of Heat and Mass Transfer

Year:

2012

Language:

english

File:

PDF, 964 KB

english, 2012

9

Critical review of membrane bioreactor models – Part 2: Hydrodynamic and integrated models

W. Naessens, T. Maere, N. Ratkovich, S. Vedantam, I. Nopens

Journal:

Bioresource Technology

Year:

2012

Language:

english

File:

PDF, 1.33 MB

english, 2012

10

Controlling Nanosized ZnO Growth Kinetics Using Various Zn:OH Concentration Ratios

Ratkovich, A.S., Penn, R.L.

Journal:

The Journal of Physical Chemistry C

Year:

2007

Language:

english

File:

PDF, 352 KB

english, 2007

11

Quiver Algebras of Coverings and Twisted Tensor Products

Corson, Jon M., Ratkovich, Thomas J.

Journal:

Communications in Algebra

Year:

2014

Language:

english

File:

PDF, 189 KB

english, 2014

12

ON PROFINITE GROUPS WHOSE POWER SUBGROUPS ARE CLOSED

Corson, Jon M., Ratkovich, Thomas J.

Journal:

Communications in Algebra

Year:

2002

Language:

english

File:

PDF, 176 KB

english, 2002

13

Experimental and CFD simulation studies of wall shear stress for different impeller configurations and MBR activated sludge

Ratkovich, N., Chan, C. C. V., Bentzen, T. R., Rasmussen, M. R.

Journal:

Water Science and Technology

Year:

2012

Language:

english

File:

PDF, 6.11 MB

english, 2012

14

Analytical and numerical modelling of Newtonian and non-Newtonian liquid in a rotational cross-flow MBR

Bentzen, T. R., Ratkovich, N., Madsen, S., Jensen, J. C., Bak, S. N., Rasmussen, M. R.

Journal:

Water Science and Technology

Year:

2012

Language:

english

File:

PDF, 563 KB

english, 2012

15

Selective Nitride Etching with Phosphoric and Sulfuric Acid Mixtures Using a Single-Wafer Wet Processor

Sih, Vincent, Reimer, Berthold, Ratkovich, Anthony S., Lauerhaas, Jeffrey M., Butterbaugh, Jeffery W.

Journal:

Solid State Phenomena

Year:

2014

Language:

english

File:

PDF, 1.92 MB

english, 2014

16

Study of a fogging system using a computational fluid dynamics simulation

Pinilla, J.A., Asuaje, M., Ratkovich, N.

Journal:

Applied Thermal Engineering

Year:

2015

Language:

english

File:

PDF, 1.62 MB

english, 2015

17

Study of Liquid-Gas Two-Phase Flow in Horizontal Pipes using High Speed Filming and Computational Fluid Dynamics

López, Jorge, Pineda, Hugo, Bello, David, Ratkovich, Nicolás

Journal:

Experimental Thermal and Fluid Science

Year:

2016

Language:

english

File:

PDF, 1.14 MB

english, 2016

18

The Application of Computational Fluid Dynamics to the Multiscale Study of Oil-in-Water Emulsions

Gallo-Molina, Juan Pablo, Ratkovich, Dr. Nicolas, Alvarez, Oscar

Journal:

Industrial & Engineering Chemistry Research

Year:

2017

Language:

english

File:

PDF, 1.32 MB

english, 2017

19

Proposal of a new injection nozzle to improve the experimental reproducibility of dust explosion tests

Murillo, Carlos, Amín, Mariangel, Bardin-Monnier, Nathalie, Muñoz, Felipe, Pinilla, Andrés, Ratkovich, Nicolás, Torrado, David, Vizcaya, Daniel, Dufaud, Olivier

Journal:

Powder Technology

Year:

2018

Language:

english

File:

PDF, 9.34 MB

english, 2018

20

CFD modeling of air and highly viscous liquid two-phase slug flow in horizontal pipes

Pineda-Pérez, H., Kim, T., Pereyra, E., Ratkovich, N.

Journal:

Chemical Engineering Research and Design

Year:

2018

Language:

english

File:

PDF, 886 KB

english, 2018

21

Simulación en CFD de un BioReactor de Membrana Anaeróbico para tratamiento de aguas residuales industriales

Ratkovich, Nicolas, Zuluaga, Laura, Naranjo, Luz, Svojitka, Jan, Wintgens, Thomas, Rodriguez, Manuel

Journal:

Revista de Ingeniería

Year:

2015

File:

PDF, 589 KB

2015

22

Phase inversion correlations analysis for oil-water flow in horizontal pipes

Prieto, Laura, Pinilla, Andres, Becerra, Deisy, Pico, Paula, Valdez, Juan Pablo, Pereyra, Eduardo, Ratkovich, Dr. Nicolas

Journal:

Industrial & Engineering Chemistry Research

Year:

2019

Language:

english

File:

PDF, 802 KB

english, 2019

23

Probabilistic approach of a flow pattern map for horizontal, vertical, and inclined pipes

Amaya-Gómez, Rafael, López, Jorge, Pineda, Hugo, Urbano-Caguasango, Diana, Pinilla, Jorge, Ratkovich, Nicolás, Muñoz, Felipe

Journal:

Oil & Gas Science and Technology – Revue d'IFP Energies nouvelles

Year:

2019

Language:

english

File:

PDF, 3.82 MB

english, 2019

24

Experimental Validation of a Hydrodynamic CFD Model for a Rotating Cross-Flow MBR Module

Bentzen, Thomas Ruby, Ratkovich, Nicolas, Rasmussen, M. R., Madsen, S., Jensen, J. C., Bak, S. N.

Journal:

International Journal of Fluid Mechanics Research

Year:

2012

File:

PDF, 848 KB

2012

25

CFD modelling of the hydrodynamics in a filtration unit with rotating membranes

Pinilla, AndrÃ©s, Berrio, Juan Carlos, Guerrero, Esteban, ValdÃ©s, Juan Pablo, Becerra, Deisy, Pico, Paula, Vargas, Lizzet, Madsen, Steffen, Bentzen, Thomas Ruby, Ratkovich, NicolÃ¡s

Journal:

Journal of Water Process Engineering

Year:

2020

File:

PDF, 3.39 MB

2020

26

3D CFD simulation of a horizontal well at pore scale for heavy oil fields

Pinilla, AndrÃ©s, Asuaje, Miguel, Hurtado, Camila, Hoyos, Angela, Ramirez, Luis, PadrÃ³n, Aaron, Ratkovich, NicolÃ¡s

Journal:

Journal of Petroleum Science and Engineering

Year:

2020

File:

PDF, 9.17 MB

2020

27

Study of an ESP's performance handling liquid-liquid flow and unstable O-W emulsions part II: Coupled CFD-PBM modelling

ValdÃ©s, Juan Pablo, Asuaje, Miguel, Ratkovich, NicolÃ¡s

Journal:

Journal of Petroleum Science and Engineering

Year:

2021

File:

PDF, 12.28 MB

2021

28

Assessment of mass transfer coefficients in coalescing slug flow in vertical pipes and applications to tubular airlift membrane bioreactors

N. Ratkovich, P.R. Berube, I. Nopens

Journal:

Chemical Engineering Science

Year:

2011

Language:

english

File:

PDF, 1.94 MB

english, 2011

29

Controlling oriented aggregation using increasing reagent concentrations and trihalo acetic acid surfactants

Anthony S. Ratkovich, R. Lee Penn

Journal:

Journal of Solid State Chemistry

Year:

2008

Language:

english

File:

PDF, 1.04 MB

english, 2008

30

The (in)significance of apparent viscosity in full-scale municipal membrane bioreactors

A.A. Moreau, N. Ratkovich, I. Nopens, J.H.J.M. van der Graaf

Journal:

Journal of Membrane Science

Year:

2009

Language:

english

File:

PDF, 811 KB

english, 2009

31

General principles of hydrological and water management analysis for multipurpose water resource utilization and conservation schemes

D. Ya. Ratkovich

Journal:

Power Technology and Engineering

Year:

1991

Language:

english

File:

PDF, 1012 KB

english, 1991

32

Mathematical model of annual runoff fluctuations for hydrologic and water-management calculations

D. Ya. Ratkovich

Journal:

Power Technology and Engineering

Year:

1972

Language:

english

File:

PDF, 564 KB

english, 1972

33

Water balance of the Caspian Sea and its level regime

D. Ya. Ratkovich

Journal:

Power Technology and Engineering

Year:

1997

Language:

english

File:

PDF, 830 KB

english, 1997

34

Experimental study and CFD modelling of a two-phase slug flow for an airlift tubular membrane

N. Ratkovich, C.C.V. Chan, P.R. Berube, I. Nopens

Journal:

Chemical Engineering Science

Year:

2009

Language:

english

File:

PDF, 516 KB

english, 2009

35

Wind-Induced Water Level Rises

D.Ya. Ratkovich, L.V. Ivanova

Journal:

Water Resources

Year:

2001

Language:

english

File:

PDF, 66 KB

english, 2001

36

On the Problem of Environmental Rehabilitation of River Basins

I. P. Aidarov, E. V. Venitsianov, D. Ya. Ratkovich

Journal:

Water Resources

Year:

2002

Language:

english

File:

PDF, 87 KB

english, 2002

37

Probabilistic Regularities in Setup Variations in the Level of a Large Inland Water Body: Case Study of the Caspian Sea

D. Ya. Ratkovich, T. Yu. Vyruchalkina, R. E. Nikonova, I. V. Solomonova

Journal:

Water Resources

Year:

2002

Language:

english

File:

PDF, 104 KB

english, 2002

38

On Environmentally Safe Withdrawal of River Water

V. S. Kovalevskii, D. Ya. Ratkovich

Journal:

Water Resources

Year:

2003

Language:

english

File:

PDF, 33 KB

english, 2003

39

Variation of the Regime of River Flow Fluctuations under the Condition of Its Regulation

D. Ya. Ratkovich, T. Yu. Vyruchalkina, I. V. Solomonova

Journal:

Water Resources

Year:

2003

Language:

english

File:

PDF, 85 KB

english, 2003

40

Zinc oxide nanoparticle growth from homogenous solution: Influence of Zn:OH, water concentration, and surfactant additives

Anthony Ratkovich, R. Lee Penn

Journal:

Materials Research Bulletin

Year:

2009

Language:

english

File:

PDF, 734 KB

english, 2009

41

Morphology of GaN(0001) and GaN(0001̄) surfaces: Persistence of surface clusters

Manske, Westley T., Ratkovich, Anthony S., Lemke, Chris J., McEllistrem, Marcus T.

Journal:

Journal of Vacuum Science & Technology A Vacuum Surfaces and Films

Year:

2003

Language:

english

File:

PDF, 1.72 MB

english, 2003

42

MBR activated sludge viscosity measurement using the Delft filtration characterization method

Lopez, J., Moreau, A., Gil, J.A., van der Graaf, J.H.J.M., van Lier, J.B., Ratkovich, N.

Journal:

Journal of Water Process Engineering

Year:

2015

Language:

english

File:

PDF, 916 KB

english, 2015

43

Proapoptotic CD95L levels in normal human serum and sera of breast cancer patients

Olimón-Andalón, Vicente, Aguilar-Lemarroy, Adriana, Ratkovich-González, Sarah, Uribe-López, Aida, Mariscal-Ramírez, Ignacio, Delgadillo-Cristerna, Raúl, Ortiz-Lazareno, Pablo, Hernández-Flores, Georgi

Journal:

Year:

2015

Language:

english

File:

PDF, 1.30 MB

english, 2015

44

Analysis of shear stress and energy consumption in a tubular airlift membrane system

Ratkovich, N., Chan, C. C. V., Berube, P. R., Nopens, I.

Journal:

Water Science and Technology

Year:

2011

Language:

english

File:

PDF, 526 KB

english, 2011

45

Novel Wet Etching of Silicon Nitride in a Single Wafer Spin Processor

Yu, Bill, Huang, Stanley, Yeh, Matt, Chen, C.C., Jang, S.M., Ratkovich, Anthony, Yang, David, Lauerhaas, Jeffrey M., Butterbaugh, Jeffery W.

Journal:

Solid State Phenomena

Year:

2012

Language:

english

File:

PDF, 421 KB

english, 2012

46

Energy consumption in terms of shear stress for two types of membrane bioreactors used for municipal wastewater treatment processes

Ratkovich, Nicolas, Bentzen, Thomas R., Rasmussen, Michael R.

Journal:

Archives of Thermodynamics

Year:

2012

Language:

english

File:

PDF, 789 KB

english, 2012

47

Comparison of four types of membrane bioreactor systems in terms of shear stress over the membrane surface using computational fluid dynamics

Ratkovich, N., Bentzen, T. R.

Journal:

Water Science and Technology

Year:

2013

Language:

english

File:

PDF, 526 KB

english, 2013

48

Investigation of the effect of viscosity on slug flow in airlift tubular membranes in search of a sludge surrogate

Ratkovich, N., Chan, C. C. V., Bérubé, P. R., Nopens, I.

Journal:

Water Science and Technology

Year:

2010

Language:

english

File:

PDF, 420 KB

english, 2010

49

Single Wafer Selective Silicon Nitride Removal with Phosphoric Acid and Steam

Guo, Ted, Yu, Wesley, Chien, C.C., Lin, Euing, Yang, N.H., Lin, J.F., Wu, J.Y., Ratkovich, Anthony, Kahaian, Don, Butterbaugh, Jeffery W., Lauerhaas, Jeffrey M.

Journal:

Solid State Phenomena

Year:

2014

Language:

english

File:

PDF, 508 KB

english, 2014

50

Experimental Validation of a Hydrodynamic CFD Model of a Hollow Fiber MBR Using Shear Intensity Measurements

Ratkovich, Nicolas, Fulton, Blair, Hunze, Michaela, Berube, Pierre, Nopens, Ingmar

Journal:

Proceedings of the Water Environment Federation

Year:

2010

Language:

english

File:

PDF, 913 KB

english, 2010

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