Visualizing results in the SALOME platform for large numerical simulations: An integration of ParaView

Ribés, Alejandro; Bruneton, Adrien

doi:10.1109/ldav.2014.7013218

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…A variant of an implicit Euler backward solver is implemented in Dosie to solve Equation (6), where the integration in Equation ( 6) is performed over tetrahedral finite elements. An open-source software SALOME [29] is used to generate the tetrahedral meshes, which are then tagged and imported into Dosie.…”

Section: Fem Light Propagation Simulations In I-pdtmentioning

confidence: 99%

Computational Optimization of Irradiance and Fluence for Interstitial Photodynamic Therapy Treatment of Patients with Malignant Central Airway Obstruction

Oakley

Parilov

Beeson

et al. 2023

Cancers

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There are no effective treatments for patients with extrinsic malignant central airway obstruction (MCAO). In a recent clinical study, we demonstrated that interstitial photodynamic therapy (I-PDT) is a safe and potentially effective treatment for patients with extrinsic MCAO. In previous preclinical studies, we reported that a minimum light irradiance and fluence should be maintained within a significant volume of the target tumor to obtain an effective PDT response. In this paper, we present a computational approach to personalized treatment planning of light delivery in I-PDT that simultaneously optimizes the delivered irradiance and fluence using finite element method (FEM) solvers of either Comsol Multiphysics® or Dosie™ for light propagation. The FEM simulations were validated with light dosimetry measurements in a solid phantom with tissue-like optical properties. The agreement between the treatment plans generated by two FEMs was tested using typical imaging data from four patients with extrinsic MCAO treated with I-PDT. The concordance correlation coefficient (CCC) and its 95% confidence interval (95% CI) were used to test the agreement between the simulation results and measurements, and between the two FEMs treatment plans. Dosie with CCC = 0.994 (95% CI, 0.953–0.996) and Comsol with CCC = 0.999 (95% CI, 0.985–0.999) showed excellent agreement with light measurements in the phantom. The CCC analysis showed very good agreement between Comsol and Dosie treatment plans for irradiance (95% CI, CCC: 0.996–0.999) and fluence (95% CI, CCC: 0.916–0.987) in using patients’ data. In previous preclinical work, we demonstrated that effective I-PDT is associated with a computed light dose of ≥45 J/cm2 when the irradiance is ≥8.6 mW/cm2 (i.e., the effective rate-based light dose). In this paper, we show how to use Comsol and Dosie packages to optimize rate-based light dose, and we present Dosie’s newly developed domination sub-maps method to improve the planning of the delivery of the effective rate-based light dose. We conclude that image-based treatment planning using Comsol or Dosie FEM-solvers is a valid approach to guide the light dosimetry in I-PDT of patients with MCAO.

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Section: Fem Light Propagation Simulations In I-pdtmentioning

confidence: 99%

Computational Optimization of Irradiance and Fluence for Interstitial Photodynamic Therapy Treatment of Patients with Malignant Central Airway Obstruction

Oakley

Parilov

Beeson

et al. 2023

Cancers

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“…It was decided to design and implement new interactive visual analytics methods in OpenTURNS by integrating the new developments into ParaView [46]. OpenTURNS and ParaView are both integrated in the SALOME open-source numerical simulation platform [47].…”

Section: Software Implementationmentioning

confidence: 99%

A Visual Sensitivity Analysis for Parameter-Augmented Ensembles of Curves

Ribés

Pouderoux²,

Iooss³

2019

Journal of Verification, Validation and Uncertainty Quantification

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Engineers and computational scientists often study the behavior of their simulations by repeated solutions with variations in their parameters, which can be for instance boundary values or initial conditions. Through such simulation ensembles, uncertainty in a solution is studied as a function of the various input parameters. Solutions of numerical simulations are often temporal functions, spatial maps or spatio-temporal outputs. The usual way to deal with such complex outputs is to limit the analysis to several probes in the temporal/spatial domain. This leads to smaller and more tractable ensembles of functional outputs (curves) with their associated input parameters: augmented ensembles of curves. This article describes a system for the interactive exploration and analysis of such augmented ensembles. Descriptive statistics on the functional outputs are performed by Principal Component Analysis projection, kernel density estimation and the computation of High Density Regions. This makes possible the calculation of functional quantiles and outliers. Brushing and linking the elements of the system allows in-depth analysis of the ensemble. The system allows for functional descriptive statistics, cluster detection and finally for the realization of a visual sensitivity analysis via cobweb plots. We present two synthetic examples and then validate our approach in an industrial use-case concerning a marine current study using a hydraulic solver.

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“…Each part and and its corresponding die geometry was modeled and meshed using SALOME [11] and the die meshs exported as .stl files describing a 2D triangular surface mesh. The forging simulation was done using Lammps [7] with the SMD user package [9].…”

Section: Simulation Strategymentioning

confidence: 99%

Modelling Closed-Die Forging Operations Using Total Lagrangian Smooth Particle Hydrodynamics

Manson¹

2019

Preprint

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Total Lagrangian Smooth Particle Hydrodynamics (TLSPH) has been applied to a set of non-trivial, commercially interesting forging examples. Being a mesh-free method, TLSPH can conveniently simulate processes having large deformation and material separation. Test cases were designed that were characterized by large material flows having large changes in grain connectivity. The implementation used, Smooth Mach Dynamics (SMD), provided tunable simulation parameters that enabled the simulation to optimally match each case. The results showed that the TLSPH/SMD has the potential to model the metal forging process efficiently without numerical instabilities. Each case studied required adaptation of the simulation parameters to optimize the results.

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Visualizing results in the SALOME platform for large numerical simulations: An integration of ParaView

Cited by 6 publications

References 2 publications

Computational Optimization of Irradiance and Fluence for Interstitial Photodynamic Therapy Treatment of Patients with Malignant Central Airway Obstruction

Computational Optimization of Irradiance and Fluence for Interstitial Photodynamic Therapy Treatment of Patients with Malignant Central Airway Obstruction

A Visual Sensitivity Analysis for Parameter-Augmented Ensembles of Curves

Modelling Closed-Die Forging Operations Using Total Lagrangian Smooth Particle Hydrodynamics

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