NovaSolver Studio

Free, local engineering simulation that your AI assistant can drive — and every answer is checked. Structural FEM, heat and CFD (CalculiX, OpenFOAM® and a built-in quadratic-tet solver) on your own PC, with an MCP server so Claude or any MCP client can import your STEP/STL, set the loads, run, refine the mesh and verify the result.

日本語 · 中文 · Try it in your browser (no install) · Download for Windows · novasolver.jp/studio

One sentence to the AI → Studio sets up and solves the case → mesh refined three times (GCI 1.5 %) → compared with a hand calculation. Real app, real numbers.

From one prompt, an AI modelled a bracket in SolidCraft and analysed three versions in Studio. It stopped without calling any of them a pass, because the mesh check had failed. 40 s video.

Why Studio

• Ran ≠ right. Every result carries three separate checks: ran → converged → mesh convergence. The third refines the mesh in three steps and reports the GCI (Roache), so you know the answer does not depend on the mesh; the built-in examples are also compared with closed-form or literature answers. None of this checks the boundary conditions or the design, and the AI is told to say exactly what was checked. Warnings that matter (stress above yield, a stress singularity at a sharp corner) are passed on, not hidden.
• Your models stay on your computer. No account, no upload, no telemetry. The only network use is the optional update check and example download (offline mode turns those off), and a public test fails if any other code starts using the network. For confidential work with a cloud AI, numbers-only mode keeps even pictures of the part away from the AI. See docs/PRIVACY.md.
• Real solvers, no licence fee. CalculiX for structural/thermal, OpenFOAM® for flow and water cooling, a built-in tet10 FEM for answers in seconds. Japanese, English and Chinese UI.
• Typed MCP tools, no shell. 37 tools (create/import, set conditions, mesh, run, convergence, verify, probe, sweep, render). The AI fills a case schema; Studio writes the solver input. Your AI's edits appear live in the window, and you can undo them.
• NovaSolver Flash: build an instant model of your own case. build_surrogate solves about 60 variants of a case in the background (loads, materials, template dimensions; a Gaussian process, checked on points held out of the fit). surrogate_predict then answers in milliseconds with an error bar for the interpolation, and refuses outside the ranges. An imported CAD shape has no dimensions to vary yet.
• Examples made with Flash: seven standard shapes. The instant_estimate tool computes the peak stress or deflection, including for dimensions never solved, from a Gaussian process fitted to 1,396 solved points. No mesh, no solve. It gives the error bar and refuses outside the solved ranges. On 224 new solves it had never seen, 287 of 288 answers landed inside the bar. See the data.
• NovaSolver Genesis: keep only the shape you need (0.8). Topology optimisation on the part itself: with its supports and loads, it seeks a higher-stiffness shape for the volume you choose (for heat, a lower-temperature layout for its sources and sinks). 3D-print overhang, extrusion and symmetry constraints; the result is a closed STL, and an extruded part is also written as a flat-faced STEP. Example: a cantilever on 40,000 cells at 30 % volume keeps 62 % of the full part's stiffness. MCP: run_genesis, genesis_result. Exported and smoothed shapes need their own analysis; see the 0.8.0 reanalysis results and limits.

Pipe elbow, OpenFOAM® (pressure drop)	Cantilever vs beam theory

Checked against known answers

A sample of the references Studio compares itself with (the full validation suite with every case, tolerance and mesh-convergence column is published with each release as docs/VALIDATION.md):

Case	Reference	Studio
Cantilever tip deflection	Euler–Bernoulli + shear	−0.9 % (built-in tet10, also in the browser demo)
Cylinder on a flat block, contact pressure	Hertz line contact	−0.04 % (mortar contact, 0.7)
Sphere drag, external flow	Schiller–Naumann	+0.3 % (OpenFOAM®, snappyHexMesh + wall layers)
Water-cooled plate	heat balance	0.03 %
Lid-driven cavity	Ghia et al.	profile match (built-in and OpenFOAM®)

This is the beginning of the README. Read the rest at the original. Read the full README ↗