Range FEA Solver Library

Finite element solver library for Range FEA. Provides physics solvers, linear system solvers, and supporting utilities used by the fea-solver CLI and the GUI application.

Solvers

Each physics solver derives from RSolverGeneric and operates on an RModel from range-model-lib.

Class	Physics
RSolverHeat	Steady-state and transient heat conduction
RSolverRadiativeHeat	Radiative heat transfer (hemicube method)
RSolverFluid	Incompressible fluid flow (Navier-Stokes)
RSolverFluidHeat	Coupled fluid flow and heat transfer
RSolverFluidParticle	Particle transport in fluid
RSolverStress	Linear structural stress analysis
RSolverAcoustic	Acoustic pressure wave propagation
RSolverElectrostatics	Electrostatic field analysis
RSolverMagnetostatics	Magnetostatic field analysis
RSolverWave	General wave equation
RSolverMesh	Mesh deformation / moving mesh

The top-level RSolver class owns the solver map and orchestrates multi-physics execution.

Linear System Solvers

RMatrixSolver wraps iterative solvers for sparse systems assembled by the physics solvers:

• Conjugate Gradient (CG)
• Generalized Minimal Residual (GMRES)

RMatrixPreconditioner provides preconditioning, and RMatrixManager handles sparse matrix storage.

REigenValueSolver provides eigenvalue/eigenvector computation for modal analysis.

Supporting Utilities

• RConvection — convective boundary condition assembly
• RLocalRotation — local coordinate frame rotations for anisotropic material properties
• RScales — physical unit scaling factors
• RIterationInfo / RIterationInfoValue — convergence tracking per iteration
• RHemiCube / RHemiCubePixel / RHemiCubeSector — hemicube geometry for view-factor computation in radiative heat transfer
• RSolverSharedData — data shared between coupled solvers across time steps

Dependencies

• range-base-lib — math primitives, logging, job management
• range-model-lib — FEA model: elements, nodes, materials, boundary conditions