Works (33)
Updated: April 4th, 2024 02:58
2024 journal article
A positivity-preserving numerical method for a thin liquid film on a vertical cylindrical fiber
JOURNAL OF COMPUTATIONAL PHYSICS, 496.
author keywords: Surface tension; Fiber coating; Positivity preserving; Finite difference scheme
doi.org (publisher)
Sources: Web Of Science, NC State University Libraries
Added: December 4, 2023
2024 journal article
COARSENING OF THIN FILMS WITH WEAK CONDENSATION\ast
SIAM JOURNAL ON APPLIED MATHEMATICS, 84(2), 362–386.
author keywords: thin film equation; coarsening dynamics; condensation; nonconservative dynamics
Sources: Web Of Science, NC State University Libraries
Added: March 18, 2024
2024 journal article
Numerical Methods for Fourth-Order PDEs on Overlapping Grids with Application to Kirchhoff-Love Plates
JOURNAL OF SCIENTIFIC COMPUTING, 98(2).
author keywords: Fourth-order time-dependent PDE; Kirchhoff-Love plate; Overlapping grids; General geometries; Artificial dissipation
Sources: Web Of Science, NC State University Libraries
Added: January 22, 2024
2024 article
ON WEAK SOLUTIONS OF A CONTROL-VOLUME MODEL FOR LIQUID FILMS FLOWING DOWN A FIBRE
Taranets, R. m., Ji, H., & Chugunova, M. (2024, February). DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B, Vol. 2.
author keywords: Thin films; travelling waves; fourth-order parabolic partial differential equations; lubrication theory; weak solution
Sources: Web Of Science, NC State University Libraries
Added: March 11, 2024
2024 journal article
Optimal boundary control of a model thin-film fiber coating model
PHYSICA D-NONLINEAR PHENOMENA, 457.
author keywords: Thin-film equation; Optimal control; Boundary control; PDE control; Distributed parameter systems
Sources: Web Of Science, NC State University Libraries
Added: December 4, 2023
2023 article
A neural ordinary differential equation model for visualizing deep neural network behaviors in multi-parametric MRI-based glioma segmentation
Yang, Z., Hu, Z., Ji, H., Lafata, K., Vaios, E., Floyd, S., … Wang, C. (2023, March 2). MEDICAL PHYSICS, Vol. 3.
author keywords: deep learning; explainability; glioma segmentation; neural ODE; visualization
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: March 27, 2023
2023 report
Coarsening of thin films with weak condensation
(ArXiv No. 2303.14728).
Sources: NC State University Libraries, NC State University Libraries
Added: October 7, 2023
2023 journal article
Mathematical model for filtration and drying in filter membranes
PHYSICAL REVIEW FLUIDS, 8(6).
UN Sustainable Development Goal Categories
13. Climate Action
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: June 16, 2023
2023 article
Prediction of 3D Velocity Field of Reticulated Foams Using Deep Learning for Transport Analysis
Ko, D. D., Ji, H., & Ju, Y. S. (2023, June 1). TRANSPORT IN POROUS MEDIA, Vol. 6.
author keywords: Deep learning; Convolutional neural network; Reticulated foam; Fluid flow; Heat transfer
TL;DR:
This study designs a deep learning model and incorporates a physics-informed loss function that enforces the mass conservation for incompressible flows to relate the spatial information of the 3D binary image to the 3D velocity field of porous media.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science)
12. Responsible Consumption and Production
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: June 1, 2023
2023 journal article
Prediction of pore-scale flow in heterogeneous porous media from periodic structures using deep learning
AIP Advances, 13(4).
TL;DR:
This work proposes a convolutional neural network trained solely on periodic unit cells to predict pore-scale velocity fields of complex heterogeneous porous media from binary images without the need for further image processing.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science)
12. Responsible Consumption and Production
(Web of Science)
Sources: ORCID, Crossref, NC State University Libraries, Web Of Science
Added: May 18, 2023
2023 journal article
Thermocapillary thin film flows on a slippery substrate with odd viscosity effects
Physica D: Nonlinear Phenomena, 455, 133883.
Contributors: S. Chattopadhyay n & n
author keywords: Falling films; Odd viscosity; Slippery substrate; Marangoni effect; Nonlinear stability
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: ORCID, NC State University Libraries, NC State University Libraries, Web Of Science
Added: August 23, 2023
2022 journal article
Electrohydrodynamics modeling of droplet actuation on a solid surface by surfactant-mediated electrodewetting
Physical Review Fluids, 8(7), 073701.
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries, NC State University Libraries
Added: July 22, 2023
2022 journal article
On travelling wave solutions of a model of a liquid film flowing down a fibre
European Journal of Applied Mathematics, 33(5), 864–893.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: May 18, 2023
2022 report
On travelling waves of a control-volume model for liquid films flowing down a fibre
(ArXiv No. 2301.02720).
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: October 7, 2023
2022 journal article
Post-Radiotherapy PET Image Outcome Prediction by Deep Learning Under Biological Model Guidance: A Feasibility Study of Oropharyngeal Cancer Application
FRONTIERS IN ONCOLOGY, 12.
author keywords: biological modeling; deep learning; image outcome prediction; radiotherapy; (18)FDG-PET
TL;DR:
The developed biologically guided deep learning method achieved post-20-Gy 18FDG-PET image outcome predictions in good agreement with ground-truth results, and could be used in adaptive radiotherapy decision-making to optimize personalized plans for the best outcome in the future.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: June 20, 2022
2021 journal article
Capillary-Driven Rise of Well-Wetting Liquid on the Outer Surface of Cylindrical Nozzles
Langmuir, 37(35), 10413–10423.
TL;DR:
The study shows that the interplay of three dimensionless numbers (the Bond number, the Weber number, and the Ohnesorge number) governs the capillary-driven rise dynamics, which leads to a more efficient and optimized nozzle design in systems using wetting liquids by reducing both the risks of contamination and high pressure drop in such devices.
(via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: May 22, 2023
2021 journal article
Experimental study of a string-based counterflow wet electrostatic precipitator for collection of fine and ultrafine particles
Journal of the Air & Waste Management Association, 71(7), 851–865.
MeSH headings : Air Pollutants / analysis; Air Pollution / prevention & control; Electrodes; Humans; Particle Size; Particulate Matter / analysis; Static Electricity; Vehicle Emissions
TL;DR:
The string-based counterflow WESP reported in this study offers number-based collection efficiencies >70% at air flow rates per collector volume as high as 4.36 (m3/s)/m3 for particles of diameters ranging from 10 nm – 2.5 μm, while significantly reducing water usage.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation
(OpenAlex)
Sources: Crossref, NC State University Libraries
Added: May 22, 2023
2021 chapter
Heavy ball neural ordinarydifferential equations
In M. Ranzato, A. Beygelzimer, Y. Dauphin, P. S. Liang, & J. W. Vaughan (Eds.), Advances in Neural Information Processing Systems (Vol. 34, pp. 18646–18659). Curran Associates Inc.
Ed(s): M. Ranzato, A. Beygelzimer, Y. Dauphin, P. Liang & J. Vaughan
Event: NeuroIPS 2021
Source: NC State University Libraries
Added: May 23, 2023
2021 journal article
Stable and accurate numerical methods for generalized Kirchhoff–Love plates
Journal of Engineering Mathematics, 130(1).
TL;DR:
This work solves the model equation by discretizing the spatial derivatives using second-order finite-difference schemes, and advancing the semi-discrete problem in time with either an explicit predictor-corrector or an implicit Newmark-Beta time-stepping algorithm.
(via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: May 22, 2023
2021 journal article
Thermally-driven coalescence in thin liquid film flowing down a fibre
Journal of Fluid Mechanics, 916.
Sources: ORCID, Crossref, NC State University Libraries
Added: May 18, 2023
2020 journal article
Modelling film flows down a fibre influenced by nozzle geometry
Journal of Fluid Mechanics, 901.
Sources: ORCID, Crossref, NC State University Libraries
Added: May 18, 2023
2020 journal article
Steady states and dynamics of a thin-film-type equation with non-conserved mass
European Journal of Applied Mathematics, 11, 1–34.
Source: ORCID
Added: May 18, 2023
2020 journal article
Theory for undercompressive shocks in tears of wine
Physical Review Fluids, 5(3).
Sources: ORCID, Crossref, NC State University Libraries
Added: May 18, 2023
2019 journal article
Dynamics of thin liquid films on vertical cylindrical fibres
Journal of Fluid Mechanics, 865, 303–327.
Source: ORCID
Added: May 18, 2023
2019 journal article
Numerical methods for thermally stressed shallow shell equations
Journal of Computational and Applied Mathematics, 362, 626–652.
Contributors: * & L. Li *
TL;DR:
Efficient and accurate numerical methods to solve a class of shallow shell problems of the von Karman type using a second-order finite difference discretization with three iterative methods for the numerical solution of the nonlinear PDE system.
(via Semantic Scholar)
Source: ORCID
Added: May 18, 2023
2019 journal article
Water vapor capturing using an array of traveling liquid beads for desalination and water treatment
Science Advances, 5(4).
TL;DR:
A study of water vapor condensation on cold liquid beads traveling down a massive array of vertical cotton threads that act as pseudo-superhydrophilic surfaces that enhance vapor diffusion toward the liquid surface, a critical rate-limiting step.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation
(OpenAlex)
Source: ORCID
Added: May 18, 2023
2018 journal article
A nodal finite element approximation of a phase field model for shape and topology optimization
Applied Mathematics and Computation, 339, 675–684.
TL;DR:
Numerical evidences show that the nodal FEM approach alleviates the initial dependency problem of structural optimization, and the 1-SBEM scheme is more stable than the other two schemes in tracking the moving boundary.
(via Semantic Scholar)
Source: ORCID
Added: May 18, 2023
2018 journal article
A vicinal surface model for epitaxial growth with logarithmic free energy
Discrete and Continuous Dynamical Systems - Series B, 23(10), 4433–4453.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: May 18, 2023
2018 journal article
Instability and dynamics of volatile thin films
Physical Review Fluids, 3(2).
Contributors: * & T. Witelski *
Source: ORCID
Added: May 18, 2023
2018 conference paper
Video: Dynamics of thin films down vertical fibers
71th Annual Meeting of the APS Division of Fluid Dynamics - Gallery of Fluid Motion.
Source: ORCID
Added: May 18, 2023
2017 journal article
Finite-time thin film rupture driven by modified evaporative loss
Physica D: Nonlinear Phenomena, 342, 1–15.
Contributors: * & T. Witelski *
Source: ORCID
Added: May 18, 2023
2017 journal article
Global existence of solutions to a tear film model with locally elevated evaporation rates
Physica D: Nonlinear Phenomena, 350, 13–25.
Contributors: Y. Gao *, * , J. Liu * & T. Witelski *
TL;DR:
Analysis of a generalized thin film model proposed by Peng et al. (2014) for break-up of tear films on human eyes analytically proves the global existence of solutions to this model with mobility exponents in several different ranges and presents numerical simulations in agreement with the analytic results.
(via Semantic Scholar)
Source: ORCID
Added: May 18, 2023
2017 thesis
Thin films with non-conservative effects
(PhD Dissertation). Duke University.
Source: NC State University Libraries
Added: May 23, 2023
Employment
Updated: August 30th, 2021 21:36
2021 - present
North Carolina State University Raleigh, North Carolina, US
Assistant Professor
Mathematics
2017 - 2021
University of California Los Angeles Los Angeles, CA, US
PIC Assistant Adjunct Professor
Mathematics
Education
Updated: September 21st, 2017 13:05
2012 - 2017
Duke University Durham, North Carolina, US
Ph.D.
Mathematics
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