SimVascular/svMultiPhysics

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svMultiPhysics is an open-source, parallel, finite element multi-physics solver.

Stars: 45
Forks: 60
Open beginner issues: 0
Indexed issues: 96
Avg merge: 5d 23h
Merged PRs (30d): 11

Dominant language: C++
License: BSD-3-Clause
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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96 open issues indexed

Line search in Integrator for 3D-0D coupling Open

enhancement

SimVascular/svMultiPhysics#648 · 1 reaction · 1 assignee · Opened Sep 16, 2026
FSILS RCS preconditioner alters small matrix diagonals and degrades convergence Open

bug

SimVascular/svMultiPhysics#646 · 1 assignee · Opened Sep 15, 2026
Error in lumen_inlet.flow data Open

bug

SimVascular/svMultiPhysics#643 · 1 comment · 1 assignee · Opened Sep 9, 2026
Temporal instability in electromechanics force-fiber-stretch feedback Open

SimVascular/svMultiPhysics#641 · 7 comments · 2 assignees · Opened Sep 4, 2026
Fiber stretch rate always evaluated to zero for active stress coupling Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

SimVascular/svMultiPhysics#639 · Opened Sep 4, 2026
svMultiPhysics/tests/cases/fluid/dye_AD does not output Concentration Open

bug

SimVascular/svMultiPhysics#638 · 1 comment · 1 assignee · Opened Sep 4, 2026
Initialize BCs coupled to the svZeroDSolver Open

enhancement

SimVascular/svMultiPhysics#636 · 1 assignee · Opened Sep 3, 2026
Uniform application of active stress across material models Open

bug enhancement

SimVascular/svMultiPhysics#635 · 4 comments · 1 assignee · Opened Sep 2, 2026
Shape function gradients are incorrectly assumed to be constant within wedge elements Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 50/100

SimVascular/svMultiPhysics#634 · 4 comments · Opened Sep 1, 2026
Templated viscous stress models Open

enhancement

SimVascular/svMultiPhysics#633 · 8 comments · 1 assignee · Opened Aug 31, 2026
Optimize double dot product and dyadic product Open

enhancement

SimVascular/svMultiPhysics#632 · 3 comments · 1 assignee · Opened Aug 30, 2026
Add units to simulation results files Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

SimVascular/svMultiPhysics#629 · 2 comments · Opened Aug 28, 2026
Improve RCR initialization script to handle coupled 0D files Open

enhancement

SimVascular/svMultiPhysics#628 · 1 assignee · Opened Aug 28, 2026
Encapsulate spatial searches into class Open

enhancement

SimVascular/svMultiPhysics#621 · 1 comment · 1 reaction · 1 assignee · Opened Aug 27, 2026
Fluid state cannot be fully initialized Open

enhancement

SimVascular/svMultiPhysics#614 · 16 comments · 1 assignee · Opened Aug 22, 2026
Add residence time to scalar transport Open

enhancement

SimVascular/svMultiPhysics#612 · 4 comments · 2 assignees · Opened Aug 20, 2026
Add Land-Niederer Active Stress Model Open

enhancement

SimVascular/svMultiPhysics#606 · 5 comments · 1 reaction · 1 assignee · Opened Aug 19, 2026
Inverse_darcy_permeability hardcoded to 0.0 in FSI assembly (fsi.cpp:211/238) — Brinkman drag not applied to porous fluid subdomains in FSI Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

SimVascular/svMultiPhysics#603 · Opened Aug 18, 2026
Add a prestress contribution to stress tensor results output Open

enhancement

SimVascular/svMultiPhysics#595 · 1 assignee · Opened Jul 31, 2026
Refactoring of parameter management Open

enhancement OOP Refactor

Difficulty 5/5 Over a week Newbie friendliness 25/100

SimVascular/svMultiPhysics#591 · Opened Jul 15, 2026
Implementing Quadrature Module Open

OOP Refactor

SimVascular/svMultiPhysics#580 · 1 comment · 1 assignee · Opened Jul 2, 2026
Refactor the time iteration loop Open

enhancement

SimVascular/svMultiPhysics#576 · 9 comments · 1 reaction · 1 assignee · Opened Jun 26, 2026
Spatial bounds on electrophysiology applied stimulus Open

enhancement

SimVascular/svMultiPhysics#572 · 9 comments · 1 assignee · Opened Jun 23, 2026
Add writing ybar to VTK results files Open

enhancement

SimVascular/svMultiPhysics#571 · 7 comments · 1 assignee · Opened Jun 22, 2026
Add adaptive mesh refinement based on solution variables Open

enhancement future development

SimVascular/svMultiPhysics#570 · 6 comments · 1 assignee · Opened Jun 19, 2026
Extend CANN implementation for additional invariants, fiber recruitment and dispersion Open

enhancement

SimVascular/svMultiPhysics#560 · 5 comments · 2 assignees · Opened Jun 2, 2026
2D struct simulation fails Open

bug

SimVascular/svMultiPhysics#557 · 8 comments · 1 assignee · Opened May 27, 2026
User defined inlet velocity profile fails Open

bug

SimVascular/svMultiPhysics#555 · 4 comments · 1 assignee · Opened May 27, 2026
Fiber generation following Bayer's method does not follow original convention. Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 52/100

SimVascular/svMultiPhysics#551 · 5 comments · Opened May 20, 2026
Follow-up polishing from #540 and #578 (Object oriented refactoring of ionic models and active stress) Open

OOP Refactor

Difficulty 5/5 Over a week Newbie friendliness 35/100

SimVascular/svMultiPhysics#549 · 1 comment · Opened May 19, 2026
Meaning of the enum class OutputNameType Open

OOP Refactor

Difficulty 5/5 Over a week Newbie friendliness 35/100

SimVascular/svMultiPhysics#548 · Opened May 19, 2026
Initialize the pressure field using a single scalar value Open

enhancement

SimVascular/svMultiPhysics#546 · 3 comments · 1 assignee · Opened May 15, 2026
Top-level abstraction for partitioned FSI with growth and remodeling (svFSGe) Open

enhancement

SimVascular/svMultiPhysics#528 · 13 comments · 1 reaction · 2 assignees · Opened Apr 14, 2026
Add external tissue support Robin BC to CMM deformable wall Open

enhancement

SimVascular/svMultiPhysics#527 · 6 comments · 1 assignee · Opened Apr 10, 2026
Implementing Core Exception Infrastructure Open

OOP Refactor

SimVascular/svMultiPhysics#526 · 4 comments · 1 assignee · Opened Apr 8, 2026
Bug report: Using RCR boundary condition with 0D coupling boundary condition Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

SimVascular/svMultiPhysics#524 · 2 comments · Opened Apr 6, 2026
Implementing Electromechanics Coupling Open

enhancement

SimVascular/svMultiPhysics#523 · 11 comments · 1 assignee · Opened Mar 30, 2026
Object oriented refactor of active stress with optional spatially varying parameters Open

enhancement

SimVascular/svMultiPhysics#519 · 5 comments · 1 assignee · Opened Mar 18, 2026
Dirichlet coupling not implemented for 3D-0D coupling with svZeroDSolver Open

bug

SimVascular/svMultiPhysics#518 · 4 comments · 2 assignees · Opened Mar 11, 2026
Couple URIS valve to tissue mechanics Open

enhancement

SimVascular/svMultiPhysics#515 · 3 comments · 1 assignee · Opened Mar 4, 2026
Remove 32 domain limit Open

enhancement

SimVascular/svMultiPhysics#514 · 2 comments · 1 assignee · Opened Mar 3, 2026
Dirichlet 3D–0D genBC Coupling Diverges in CFD Open

bug

SimVascular/svMultiPhysics#500 · 11 comments · 2 assignees · Opened Feb 4, 2026
Implement multipoint constraint for EP simulations Open

enhancement future development

SimVascular/svMultiPhysics#499 · 6 comments · 1 assignee · Opened Jan 31, 2026
Create example cases folder Open

enhancement

SimVascular/svMultiPhysics#494 · 7 comments · 1 reaction · 2 assignees · Opened Jan 23, 2026
Mismatch between variable names at set_bc.cpp Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

SimVascular/svMultiPhysics#492 · 3 comments · Opened Jan 21, 2026
Energy consistent boundary conditions for cardiac models Open

enhancement

SimVascular/svMultiPhysics#491 · 2 comments · 1 assignee · Opened Jan 15, 2026
VtkVtpData::get_point_data() fails silently if data is float32 Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

SimVascular/svMultiPhysics#490 · 1 comment · Opened Jan 14, 2026
Unit test for remesh.cpp Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SimVascular/svMultiPhysics#489 · 2 comments · Opened Jan 13, 2026
Divergence is large for some cases. Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SimVascular/svMultiPhysics#487 · Opened Jan 8, 2026
Add distal pressure for resistance BC Open

enhancement

SimVascular/svMultiPhysics#486 · 9 comments · 1 assignee · Opened Jan 7, 2026

SimVascular/svMultiPhysics

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