5 papers · 1 filter
Simulating acoustically-actuated flows in complex microchannels using the volume penalization technique
Khemraj Gautam Kshetri, Amneet Pal Singh Bhalla, Nitesh Nama
We present a volume penalization technique for simulating acoustically-actuated flows in geometrically complex microchannels. Using a perturbation approach, the nonlinear response…
Analytical and numerical solutions to the three-phase Stefan problem with simultaneous occurrences of melting, solidification, boiling, and condensation phenomena
Mehran Soleimani, Kimmo Koponen, Nils Tilton +1
The one-dimensional (1D) Stefan problem is a prototypical heat and mass transfer problem that analyzes the temperature distribution in a material undergoing phase change. In additi…
Consistent continuum equations and numerical benchmarks for a perturbation-based, variable-coefficient acoustofluidic solver
Khemraj Gautam Kshetri, Amneet Pal Singh Bhalla, Nitesh Nama
We present a consistent continuum framework and a variable-coefficient acoustofluidic solver to analyze acoustic streaming. A perturbation approach is used to split the compressibl…
A consistent, volume preserving, and adaptive mesh refinement-based framework for modeling non-isothermal gas-liquid-solid flows with phase change
Ramakrishnan Thirumalaisamy, Amneet Pal Singh Bhalla
This work expands on our recently introduced low Mach enthalpy method [1] for simulating the melting and solidification of a phase change material (PCM) alongside (or without) an a…
Preventing mass loss in the standard level set method: New insights from variational analyses
Kaustubh Khedkar, Amirreza Charchi Mamaghani, Pieter Ghysels +2
For decades, the computational multiphase flow community has grappled with mass loss in the level set method. Numerous solutions have been proposed, from fixing the reinitializatio…