Personal information

Nuclear chemical engineering science; theory; modeling; and simulation.
United States

Biography

Before joining UMass Lowell in 2017 (Dept. of Chemical Engineering, Nuclear Program), Prof. de Almeida was a Senior Staff Scientist at the Oak Ridge National Laboratory for 18 years working in the areas of: Nuclear Separations; Theory, Modeling and Simulation of Atomistic to Continuum Media; Nuclear Materials Recovery; High-Performance Computing.

Current interests: Nuclear chemical engineering science, and cross-cutting energy and materials applications: nuclear fuel recycling, nuclear facilities, national security, separations, isotopes. Modeling of atomic to continuum transport phenomena and validated high-performance computing simulation. Basic and applied research for energy applications: chemical, nuclear and materials.

Activities

Employment (3)

University of Massachusetts Lowell: Lowell, MA, US

2017-08-01 to present | Associate Professor (Chemical Engineering, Nuclear Program)
Employment
Source: Self-asserted source
Valmor F. de Almeida

Oak Ridge National Laboratory: Oak Ridge, TN, US

1999-04-01 to 2017-06-30 | Senior R&D Staff (Chemical Sciences Division)
Employment
Source: Self-asserted source
Valmor F. de Almeida

University of Minnesota: Minneapolis, MN, US

1997-08-02 to 1999-03-05 | Research Associate (Chemical Engineering and Materials Science/Army High Performance Computing Research Center)
Employment
Source: Self-asserted source
Valmor F. de Almeida

Education and qualifications (4)

Minnesota Supercomputer Institute (University of Minnesota): Minneapolis, MN, US

1996-01-05 to 1997-08-01 | Scholar Post-Doctoral Associate
Education
Source: Self-asserted source
Valmor F. de Almeida

University of Minnesota: Minneapolis, US

1989-10 to 1995-09-05 | PhD (Chemical Engineering and Materials Science)
Education
Source: Self-asserted source
Valmor F. de Almeida

Pontifical Catholic University of Rio de Janeiro: Rio de Janeiro, BR

1987 to 1989 | MS (Mechanical Engineering (Thermal Sciences))
Education
Source: Self-asserted source
Valmor F. de Almeida

University of Brasilia: Brasilia, Federal District, BR

1982 to 1987 | BS (Mechanical Engineering)
Education
Source: Self-asserted source
Valmor F. de Almeida

Professional activities (3)

American Nuclear Society: La Grange Park, Illinois, US

Membership
Source: Self-asserted source
Valmor F. de Almeida

American Institute of Chemical Engineers: New York, NY, US

Membership
Source: Self-asserted source
Valmor F. de Almeida

American Chemical Society: Washington, DC, US

Membership
Source: Self-asserted source
Valmor F. de Almeida

Works (50 of 66)

Items per page:
Page 1 of 2

A Novel Core Design with Movable Moderator for a Fluoride Salt–Cooled High-Temperature Reactor

Nuclear Science and Engineering
2023-06-03 | Journal article
Part of ISSN: 0029-5639
Part of ISSN: 1943-748X
Contributors: Zuolong Zhu; Dean Wang; Valmor de Almeida; Charles Forsberg; Eugene Shwageraus
Source: Self-asserted source
Valmor F. de Almeida

Microflow visualization and electrical signature of tri-n-butyl phosphate/n-dodecane and nitric acid in a centrifugal contactor

Chemical Engineering Journal
2023-01 | Journal article
Contributors: Valmor F. de Almeida; Joseph F. Birdwell, Jr.; David W. DePaoli; Costas Tsouris
Source: check_circle
Crossref

Cermet nuclear waste forms: Phase identification and connectivity

Journal of Nuclear Materials
2022-12 | Journal article
Part of ISSN: 0022-3115
Contributors: Valmor F. de Almeida; Valmor F. de Almeida; Clint Ausmus; Robert T. Jubin
Source: Self-asserted source
Valmor F. de Almeida

Solvent extraction flowsheet-level modeling and simulation with radiolysis

GLOBAL 2019 - International Nuclear Fuel Cycle Conference and TOP FUEL 2019 - Light Water Reactor Fuel Performance Conference
2020 | Conference paper
EID:

2-s2.0-85081090472

Contributors: de Almeida, V.F.; Azzaoui, T.; Lyon, K.L.
Source: Self-asserted source
Valmor F. de Almeida via Scopus - Elsevier

How Long is the Worst Part of the COVID-19 Mortality Surge?

OSF Preprint
2020-05-23 | Preprint
Source: Self-asserted source
Valmor F. de Almeida
grade
Preferred source (of 2)‎

Advancing Understanding of Fission Gas Behavior in Nuclear Fuel through Leadership Class Computing

2019-06 | Report
OTHER-ID: 1523789
Contributors: Wirth, Brian
Source: Self-asserted source
Valmor F. de Almeida via DOE OSTI.GOV

An iterative phase-space explicit discontinuous Galerkin method for stellar radiative transfer in extended atmospheres

Journal of Quantitative Spectroscopy and Radiative Transfer
2017 | Journal article
WOSUID:

WOS:000403742200028

Contributors: de Almeida, Valmor F.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Analysis of gas membrane ultra-high purification of small quantities of mono-isotopic silane

Journal of Membrane Science
2017 | Journal article
Contributors: de Almeida, V. F.; Hart, K. J.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Cluster Dynamics Modeling with Bubble Nucleation, Growth and Coalescence

2017 | Report
Contributors: de Almeida, Valmor F.; Blondel, Sophie; Bernholdt, David E.; Wirth, Brian D.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Facility Modeling Capability Demonstration Summary Report

2017 | Report
Contributors: Key, Brian P.; Sadasivan, Pratap; Fallgren, Andrew James; Demuth, Scott Francis; Aleman, Sebastian E.; de Almeida, Valmor F.; Chiswell, Steven R.; Hamm, Larry; Tingey, Joel M.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

High Efficiency Water Heating Technology Development Final Report, Part II: CO<sub>2</sub> and Absorption-Based Residential Heat Pump Water Heater Development

2017 | Report
Contributors: Gluesenkamp, Kyle R.; Abdelaziz, Omar; Patel, Viral K.; Mandel, Bracha T.; de Almeida, Valmor F.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Microflow Visualization of Tri-n-butyl-Phosphate/Dodecane and Nitric Acid in a Centrifugal Contactor. Part I: Flow Regimes, Transitions and Hysteresis

2017 | Report
Contributors: de Almeida, Valmor; Birdwell Jr, Joseph F.; DePaoli, David W.; Tsouris, Costas
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Analysis of Gas Membrane Ultra-High Purification of Small Quantities of Mono-Isotopic Silane

2016 | Report
Contributors: de Almeida, Valmor F.; Hart, Kevin J.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Improved Structural Design and CO<sub>2</sub> Capture of Porous Hydroxy-Rich Polymeric Organic Frameworks

2016 | Report
Contributors: Kidder, Michelle K.; Earl, Lyndsey D.; de Almeida, Valmor F.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Neutron Scattering of Residual Hydrogen in 1,4-Dioxane-d(8) Liquid: Understanding Measurements with Molecular Dynamics Simulations

Journal of Physical Chemistry B
2016 | Journal article
WOSUID:

WOS:000378663600014

Contributors: de Almeida, V. F.; Liu, H. J.; Herwig, K. W.; Kidder, M. K.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Numerical simulation of phase transition problems with explicit interface tracking

Chemical Engineering Science
2015 | Journal article
WOSUID:

WOS:000351945600010

Source: Self-asserted source
Valmor F. de Almeida
grade
Preferred source (of 2)‎

FULLY DEVELOPED TURBULENT MIXING IN AN ANNULAR SECTOR

Hyperbolic Problems: Theory, Numerics, Applications
2014 | Journal article
WOSUID:

WOS:000383745000064

Contributors: Lim, H.; Zhou, Y. J.; de Almeida, V. F.; Glimm, J.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Molecular Dynamics Simulations of Tri-n-butyl-phosphate/n-Dodecane Mixture: Thermophysical Properties and Molecular Structure

Journal of Physical Chemistry B
2014 | Journal article
WOSUID:

WOS:000341619600020

Contributors: Cui, S. T.; de Almeida, V. F.; Khomami, B.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Effect of varying the 1-4 intramolecular scaling factor in atomistic simulations of long-chain N-alkanes with the OPLS-AA model

Journal of Molecular Modeling
2013 | Journal article
WOSUID:

WOS:000315349800026

Contributors: Ye, X. G.; Cui, S. T.; de Almeida, V. F.; Khomami, B.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Molecular Simulation of Water Extraction into a Tri-n-Butylphosphate/n-Dodecane Solution

Journal of Physical Chemistry B
2013 | Journal article
WOSUID:

WOS:000330160100026

Contributors: Ye, X. G.; Cui, S. T.; de Almeida, V. F.; Khomami, B.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Progress on Plant-Level Modeling and Simulation of Used Nuclear Fuel Dissolution: Startup Condition with Quasi-Developed Flow and Varying Acid Concentration

2013 | Report
Contributors: de Almeida, Valmor F.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Quantify Water Extraction by TBP/Dodecane via Molecular Dynamics Simulations

2013 | Report
Contributors: Khomami, Bamin; Cui, Shengting; de Almeida, Valmor F.; Felker, Kevin
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Sharp Interface Tracking in Rotating Microflows of Solvent Extraction

2013 | Report
Contributors: Glimm, James; Almeida, Valmor de; Jiao, Xiangmin; Sims, Brett; Li, Xaiolin
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Development of a Front Tracking Method for Two-Phase Micromixing of Incompressible Viscous Fluids with Interfacial Tension in Solvent Extraction

2012 | Report
Contributors: Zhou, Yijie; Lim, Hyun-Kyung; de Almeida, Valmor F.; Navamita, Ray; Wang, Shuqiang; Glimm, James G.; Li, Xiao-lin; Jiao, Xiangmin
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Molecular Dynamics Simulation of Tri-n-butyl-Phosphate Liquid: A Force Field Comparative Study

Journal of Physical Chemistry B
2012 | Journal article
WOSUID:

WOS:000298978100038

Contributors: Cui, S. T.; de Almeida, V. F.; Hay, B. P.; Ye, X. G.; Khomami, B.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Plant-Level Modeling and Simulation of Used Nuclear Fuel Dissolution

2012 | Report
Contributors: de Almeida, Valmor F.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Erratum: Uranyl nitrate complex extraction into TBP/dodecane organic solutions: A molecular dynamics study (Physical Chemistry Chemical Physics (2010) 12 (15406-5409) DOI 10.1039/C0CP00953A))

Physical Chemistry Chemical Physics
2011 | Journal article
EID:

2-s2.0-82655175496

Part of ISBN:

14639076

Contributors: Ye, X.; Cui, S.; De Almeida, V.F.; Hay, B.P.; Khomami, B.
Source: Self-asserted source
Valmor F. de Almeida via Scopus - Elsevier

FY 2007 LDRD Director's R&D Progress SummaryProposal Title: Developing a Science Base for Fuel Reprocessing Separations in the Global Nuclear Energy Program

2011 | Report
Contributors: de Almeida, Valmor F.; Tsouris, Costas; Birdwell Jr, Joseph F.; D'Azevedo, Ed F.; Jubin, Robert Thomas; DePaoli, David W.; Moyer, Bruce A.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Progress on Plant-Level Components for Nuclear Fuel Recycling: Commonality

2011 | Report
Contributors: de Almeida, Valmor F.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

The Nuclear Energy Advanced Modeling and Simulation Safeguards and Separations Reprocessing Plant Toolkit

2011 | Report
Contributors: McCaskey, Alex; Billings, Jay Jay; de Almeida, Valmor F.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Uranyl nitrate complex extraction into TBP/dodecane organic solutions: a molecular dynamics study (vol 12, pg 15406, 2010)

Physical Chemistry Chemical Physics
2011 | Journal article
WOSUID:

WOS:000297560200059

Contributors: Ye, X. G.; Cui, S. T.; de Almeida, V. F.; Hay, B. P.; Khomami, B.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Influence of Nitric Acid on Uranyl Nitrate Association in Aqueous Solutions: A Molecular Dynamics Simulation Study

Solvent Extraction and Ion Exchange
2010 | Journal article
WOSUID:

WOS:000277195100001

Contributors: Ye, X. G.; Smith, R. B.; Cui, S. T.; de Almeida, V.; Khomami, B.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Pneumatic drop-on-demand generation for production of metal oxide microspheres by internal gelation

Journal of Nuclear Materials
2010 | Journal article
WOSUID:

WOS:000281494700007

Contributors: de Almeida, V. F.; Hunt, R. D.; Collins, J. L.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Uranyl nitrate complex extraction into TBP/dodecane organic solutions: a molecular dynamics study

Physical Chemistry Chemical Physics
2010 | Journal article
WOSUID:

WOS:000284589900010

Contributors: Ye, X. G.; Cui, S. T.; de Almeida, V. F.; Hay, B. P.; Khomami, B.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Independent Technical Review of the Assessement of Pulse-Jet Mixing Performance in Vessels Containing Non-Newtonian Sludges at the Waste Treatment and Immobilization Plant

Savannah River National Laboratory
2010-06-30 | Report
Source: Self-asserted source
Valmor F. de Almeida

Coupling a Transient Solvent Extraction Module with the Separations and Safeguards Performance Model

2009 | Report
Contributors: de Almeida, Valmor F.; Birdwell Jr, Joseph F.; DePaoli, David W.; Gauld, Ian C.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Interfacial Complex Formation in Uranyl Extraction by Tributyl Phosphate in Dodecane Diluent: A Molecular Dynamics Study

Journal of Physical Chemistry B
2009 | Journal article
WOSUID:

WOS:000268139600029

Contributors: Ye, X. G.; Cui, S. T.; de Almeida, V.; Khomami, B.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Status of Safeguards and Separations Model Development at Plant and Molecular Levels

2009 | Report
Contributors: de Almeida, Valmor F.; Hay, Benjamin; DePaoli, David W.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Atomistic simulation of uranyl ion extraction by tbp/dodecane solution

AIChE Annual Meeting, Conference Proceedings
2008 | Conference paper
EID:

2-s2.0-79952299488

Contributors: Ye, X.; Cui, S.; De Almeida, V.; Khomami, B.
Source: Self-asserted source
Valmor F. de Almeida via Scopus - Elsevier

Exploring HPCS Languages in Scientific Computing - art. no. 012034

Scidac 2008: Scientific Discovery through Advanced Computing
2008 | Book chapter
WOSUID:

WOS:000260370700035

Contributors: Barrett, R. R.; Alam, S. R.; de Almeida, V. F.; Bernholdt, D. E.; Elwasif, W. R.; Kuehn, J. A.; Poole, S. W.; Shet, A. G.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Hybrid Surface Mesh Adaptation for Climate Modeling

Numerical Mathematics-Theory Methods and Applications
2008 | Journal article
WOSUID:

WOS:000207474100003

Contributors: Khamayseh, A.; de Almeida, V.; Hansen, G.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Adaptive hybrid mesh refinement for multiphysics applications

SciDac 2007: Scientific Discovery Through Advanced Computing
2007 | Book chapter
WOSUID:

WOS:000250667200039

Contributors: Khamayseh, A.; de Almeida, V.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

GNES-R: Global nuclear energy simulator for reactors task 1: High-fidelity neutron transport

PHYSOR-2006 - American Nuclear Society's Topical Meeting on Reactor Physics
2006 | Conference paper
EID:

2-s2.0-33847201913

Contributors: Clarno, K.; De Almeida, V.; D'Azevedo, E.; De Oliveira, C.; Hamilton, S.
Source: Self-asserted source
Valmor F. de Almeida via Scopus - Elsevier

Removal of micron-size droplets from an air stream by means of electric fields

Separation Science and Technology
2005 | Journal article
WOSUID:

WOS:000227145000023

Contributors: Riahi-Nezhad, C. K.; Tsouris, C.; DePaoli, D. W.; de Almeida, V. F.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎

Advanced hydraulic and mass transfer models for distillation column optimization and design

2004 AIChE Spring Meeting, Conference Proceedings
2004 | Conference paper
EID:

2-s2.0-84862392880

Contributors: Eldridge, R.B.; Green, C.; De Almeida, V.
Source: Self-asserted source
Valmor F. de Almeida via Scopus - Elsevier

An Iterative Phase-Space Explicit Discontinuous Galerkin Method for Stellar Radiative Transfer in Extended Atmospheres

2004 | Report
Contributors: de Almeida, V. F.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

Virtual processing of advanced nanomaterials

American Ceramic Society Bulletin
2004 | Other
EID:

2-s2.0-25444493577

Part of ISBN:

00027812 00027812

Contributors: Pozhar, L.A.; De Almeida, V.F.; Hu, M.Z.
Source: Self-asserted source
Valmor F. de Almeida via Scopus - Elsevier

Virtual processing of advanced nanomaterials

American Ceramic Society Bulletin
2004 | Journal article
WOSUID:

WOS:000222500600045

Contributors: Pozhar, L. A.; de Almeida, V. F.; Hu, M. Z.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID

GraSPI (Graphical Structured Packing Interface)

2004-06 | Report
OTHER-ID: 1231338
Contributors: Almedia, Valmor de
Source: Self-asserted source
Valmor F. de Almeida via DOE OSTI.GOV

A class of parallel multiple-front algorithms on subdomains

International Journal for Numerical Methods in Engineering
2003 | Journal article
WOSUID:

WOS:000181676800003

Contributors: Bose, A.; Carey, G. F.; de Almeida, V. F.
Source: Self-asserted source
Valmor F. de Almeida via ResearcherID
grade
Preferred source (of 2)‎
Items per page:
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