Publications
Showing 10 results for Author: Kellis C. Kincaid
Mar, 2026
Conference Paper
Comparison of Artificial Compressibility Methods for Coupled Laminar Fluid Flow and Heat Transfer
Artificial compressibility (AC) methods for incompressible flows perturb the mass continuity equation by the time derivative of the pressure field to achieve direct coupling between pressure and velocity without the need for a projection method. Several variations of the original AC method have been proposed (e.g., the entropically damped artificial compressibility [EDAC]…
Mar, 2026
Journal
A time-parallel method for scalable heat transfer simulations of additive manufacturing
A major challenge in simulating the thermal behavior in additive manufacturing processes is the disparate length and time scales between transport phenomena occurring in the melt pool and the component. A common simulation approach relies on spatial decomposition for parallel computing, but due to the nature of heat transfer in AM, where most of the computational expenditu…
Sep, 2025
Journal
Numerical assessment of triply periodic minimal surfaces for direct air capture of carbon dioxide
Direct air capture (DAC) systems often consist of packing material wetted by a capture fluid that reacts with CO2 in the airstream. The efficiency of the contactor is determined by a complex relationship of fluid dynamics, heat and mass transfer, contactor geometry, and chemical properties. The efficiency of the contactor must be balanced with other factors, primarily pres…
Jun, 2025
Journal
AdditiveFOAM: A Continuum Multiphysics Code for Additive Manufacturing
AdditiveFOAM is a computational framework that simulates transport phenomena in Additive Manufacturing (AM) processes. It is built on OpenFOAM (Weller et al., 1998), the leading free, open-source software package for computational fluid dynamics (CFD). OpenFOAM offers an extensible platform for solving complex multiphysics problems using state-of-the-art finite volume meth…
Apr, 2025
ORNL Report
Summary of Multiphysics Modeling for Sublimation Mass Transfer
This report summarizes the effort to develop a multiphysics modeling framework for sublimation mass transfer processes. The aim of the project was to develop a multiphysics code capable of predicting phase change between solid and gas in a closed container, and the movement of material within such a container when exposed to various exterior environmental conditions. Two m…
Jan, 2025
Journal
A heat and mass transfer model for evaluation of damaged cesium chloride radiological sources
Radiological sources are vital to many applications, and typically contain byproducts from waste streams which decay over time to form complex mixtures of elements. Daughter products resulting from these decay processes can introduce complicating factors to the integrity and safety of the vessel that contains the radiological material. Sources containing cesium 137 (137Cs)…
Nov, 2024
Journal
A dynamic volumetric heat source model for laser additive manufacturing
Melt pool scale models of laser powder bed fusion (LPBF) offer insights into the process-structure-property relationships in additive manufacturing (AM). These models often neglect physical phenomena such as vapor cavity formation and fluid mechanics to reduce computational demands. Instead, volumetric heat source models are used to represent the effects that these phenome…
Nov, 2023
Journal
A thin-film modeling approach for analysis of carbon capture sorbent-based devices
The threat of climate change has driven scientists and engineers to develop new methods reducing carbon emitted as well as capturing CO from the atmosphere and other point sources. Carbon capture technology is still in its infancy and requires significant system efficiency improvements before commercial or industrial adoption is not cost prohibitive. Contactor designs must…