ISTHMUS: Interfacing Surface Triangles and voxels for Heterogeneous MUltiphysics Simulations

Ahmed H. Yassin; Ethan H. Huff; Vijay B. Mohan Ramu; Bruno Tacchi; Carlos E. Américo; Tyler D. Stoffel; Savio J. Poovathingal

doi:10.1016/j.softx.2026.102660

ISTHMUS: Interfacing Surface Triangles and voxels for Heterogeneous MUltiphysics Simulations

Ahmed H. Yassin
, Ethan H. Huff
, Vijay B. Mohan Ramu
, Bruno Tacchi
, Carlos E. Américo
, Tyler D. Stoffel
, Savio J. Poovathingal

Producción científica: Article › revisión exhaustiva

Resumen

ISTHMUS is a software package designed to couple voxel-based domains with surface mesh-based solvers. Voxelized geometries provide high-fidelity representations of materials but are difficult to integrate into multiphysics workflows because of jagged boundaries and the absence of robust interface mapping. ISTHMUS addresses this challenge through two key modules: motion mapping and flux mapping. The software is written in Python with performance-critical routines accelerated on GPUs via CUDA. ISTHMUS is solver-agnostic, enabling coupling of a wide range of fluid, thermal, and structural codes without requiring modifications to their discretizations.

Idioma original	English
Número de artículo	102660
Publicación	SoftwareX
Volumen	34
DOI	https://doi.org/10.1016/j.softx.2026.102660
Estado	Published - jun 2026

Nota bibliográfica

Publisher Copyright:
© 2026 The Author(s).

Financiación

The research was sponsored by DEVCOM-ARL and was accomplished under Cooperative Agreement Numbers W911NF-21-2-0075 and W911NF-19-2-0152. This work was also based upon work supported by the Office of the Under Secretary of Defense for Research and Engineering under award number FA9550-22-1-0342. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the ARL or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein.

Financiadores	Número del financiador
DEVCOM Army Research Laboratory	W911NF-19-2-0152, W911NF-21-2-0075
Office of the Under Secretary of Defense for Research and Engineering	FA9550-22-1-0342

ASJC Scopus subject areas

Software
Computer Science Applications

Acceder al documento

10.1016/j.softx.2026.102660

Otros archivos y enlaces

Citar esto

@article{41d03b2fb2034e74b9337c21d4770b02,

title = "ISTHMUS: Interfacing Surface Triangles and voxels for Heterogeneous MUltiphysics Simulations",

abstract = "ISTHMUS is a software package designed to couple voxel-based domains with surface mesh-based solvers. Voxelized geometries provide high-fidelity representations of materials but are difficult to integrate into multiphysics workflows because of jagged boundaries and the absence of robust interface mapping. ISTHMUS addresses this challenge through two key modules: motion mapping and flux mapping. The software is written in Python with performance-critical routines accelerated on GPUs via CUDA. ISTHMUS is solver-agnostic, enabling coupling of a wide range of fluid, thermal, and structural codes without requiring modifications to their discretizations.",

keywords = "Differential ablation, Fluid-structure interactions, Fluid-thermal interactions, Marching windows, Mesoscale coupling, Voxel-to-surface map",

author = "Yassin, \{Ahmed H.\} and Huff, \{Ethan H.\} and \{Mohan Ramu\}, \{Vijay B.\} and Bruno Tacchi and Am{\'e}rico, \{Carlos E.\} and Stoffel, \{Tyler D.\} and Poovathingal, \{Savio J.\}",

note = "Publisher Copyright: {\textcopyright} 2026 The Author(s).",

year = "2026",

month = jun,

doi = "10.1016/j.softx.2026.102660",

language = "English",

volume = "34",

journal = "SoftwareX",

issn = "2352-7110",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - ISTHMUS

T2 - Interfacing Surface Triangles and voxels for Heterogeneous MUltiphysics Simulations

AU - Yassin, Ahmed H.

AU - Huff, Ethan H.

AU - Mohan Ramu, Vijay B.

AU - Tacchi, Bruno

AU - Américo, Carlos E.

AU - Stoffel, Tyler D.

AU - Poovathingal, Savio J.

PY - 2026/6

Y1 - 2026/6

N2 - ISTHMUS is a software package designed to couple voxel-based domains with surface mesh-based solvers. Voxelized geometries provide high-fidelity representations of materials but are difficult to integrate into multiphysics workflows because of jagged boundaries and the absence of robust interface mapping. ISTHMUS addresses this challenge through two key modules: motion mapping and flux mapping. The software is written in Python with performance-critical routines accelerated on GPUs via CUDA. ISTHMUS is solver-agnostic, enabling coupling of a wide range of fluid, thermal, and structural codes without requiring modifications to their discretizations.

AB - ISTHMUS is a software package designed to couple voxel-based domains with surface mesh-based solvers. Voxelized geometries provide high-fidelity representations of materials but are difficult to integrate into multiphysics workflows because of jagged boundaries and the absence of robust interface mapping. ISTHMUS addresses this challenge through two key modules: motion mapping and flux mapping. The software is written in Python with performance-critical routines accelerated on GPUs via CUDA. ISTHMUS is solver-agnostic, enabling coupling of a wide range of fluid, thermal, and structural codes without requiring modifications to their discretizations.

KW - Differential ablation

KW - Fluid-structure interactions

KW - Fluid-thermal interactions

KW - Marching windows

KW - Mesoscale coupling

KW - Voxel-to-surface map

UR - https://www.scopus.com/pages/publications/105036007527

UR - https://www.scopus.com/pages/publications/105036007527#tab=citedBy

U2 - 10.1016/j.softx.2026.102660

DO - 10.1016/j.softx.2026.102660

M3 - Article

AN - SCOPUS:105036007527

SN - 2352-7110

VL - 34

JO - SoftwareX

JF - SoftwareX

M1 - 102660

ER -

ISTHMUS: Interfacing Surface Triangles and voxels for Heterogeneous MUltiphysics Simulations

Resumen

Nota bibliográfica

Financiación

ASJC Scopus subject areas

Acceder al documento

Otros archivos y enlaces

Huella

Citar esto