PetIBM
PetIBM: A self-hosted CFD solver for teams running parallel incompressible-flow simulations. Ranked #56 of 89 in Physics Simulation Software by our editors (3.4/10); pricing: Free plan; best for HPC teams simulating incompressible fluid flow.
At a glance
- Editor score3.4 / 10
- PricingFree plan
- Best forHPC teams simulating incompressible fluid flow
- Free planYes
- Paid fromFree
- Delivery modeDesktop
- Facts checked24 Sep 2026
Where it wins
- Uses immersed boundaries to model flow around complex or moving geometries
- PETSc-based solver supports parallel execution for high-performance computing
- Supports CUDA acceleration and two- and three-dimensional flow cases
Where it doesn't
- Requires command-line, user-managed deployment on Linux
- No supplied visualization or export layer
- Focused on flow simulation, not lessons or assessments
Our verdict on PetIBM
PetIBM is an open-source scientific-computing solver for researchers and engineers modeling incompressible fluid flow, including flows around complex or moving geometries. Its immersed-boundary method is central to that use case, while support for two- and three-dimensional cases gives teams flexibility in how they frame simulations. It is aimed at computational-fluid-dynamics work rather than teaching: it does not provide a lesson or assessment platform.
The computing stack is the main reason to consider PetIBM. Its numerical solver is based on PETSc, and the software is designed for parallel execution on high-performance computing systems, with CUDA GPU acceleration also supported. Those capabilities make it relevant to teams with an existing compute environment and workflows for running scientific simulations. PETSc and CUDA are the listed integrations; deployment is self-hosted and user-managed, so prospective adopters should expect to handle the command-line environment rather than rely on a hosted service.
PetIBM is free and open source, which avoids a paid plan decision, but that does not remove the operational work of running and maintaining it. The project is a narrower fit than a general physics simulation package: it focuses on incompressible flow with immersed boundaries, and no visualization or export layer is supplied. Documentation and community are the stated support channels. Choose PetIBM if your team needs this solver approach and can manage its computing environment; look elsewhere if you need an integrated visualization workflow, a hosted interface, or instructional content.
Your product? Our editors can test PetIBM in depth and publish a review, labelled as paid · from $149/mo →
PetIBM pricing
PetIBM fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Delivery mode | Desktop |
| Lesson library | No |
| Authoring tools | No |
| Assessment tools | No |
| 3D visuals | Not verified |
| Offline access | Yes |
| Data export | Not verified |
| Deployment | Self-hosted |
| Platforms | Linux |
| Support | Docs, Community |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 2 integrations: PETSc, CUDA |
| Pricing | Free plan |
| Website | barbagroup.github.io |
| Facts checked | 24 Sep 2026 |
PetIBM integrations
PetIBM lists 2 integrations on its own site.
- PETSc
- CUDA
Alternatives to PetIBM
- COMSOL MultiphysicsA broad desktop environment for coupled physics, engineering models, and custom simulation apps.9.4
- Ansys FluentA deep CFD and HPC environment for demanding industrial simulation work.9.3
- SimScaleA broad browser-based multiphysics platform with flexible cloud workflows and tiered access.9.1
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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