Inspect. Prepare. Compare.
Original STEP geometry · touch and keyboard controls available.
2D wave preview · height and period only. Direction is shown in 3D; boat response is not simulated.
Analytical deep-water waves for visual orientation only. No wave forces, slamming or boat response are calculated.
What the solver actually did.
Download portable interactive review
Recorded startup history · not recalculated by the test settings above.
R18 remains the flow reference. The latest repair tests have not produced an accepted performance mesh. R19 removes every wall layer; R20 changes quality only marginally. R21 reduces flags at the cost of three-layer coverage (34.6% to 22.4%). R22 lowers poor-determinant cells to two but reduces wall-layer coverage to 44.1% and fails three checks. No repair is promoted as an accepted mesh.
| Mesh | Poor determinants | Concavity flags | Wet area ≥1 layer | Wet area ≥3 layers |
|---|---|---|---|---|
| R18 | 14 | 2,823 | 80.4% | 34.6% |
| R19 | 0 | 486 | 0.0% | 0.0% |
| R20 | 13 | 2,865 | 80.8% | 34.2% |
| R21 | 12 | 2,357 | 81.4% | 22.4% |
| R22 | 2 | 2,198 | 44.1% | 11.7% |
R18: internal smoothing. R19: layer suppression buffer. R20: face splitting. R21: wider graded termination. R22: stricter tetrahedron quality. R19–R22 are mesh-only tests; fewer flagged cells alone does not establish adequate wall resolution.
Longer R18 flow saved through 25.02 ms. Final air/water speed maxima: 25.47/15.97 m/s. Stop: normal completion. This is 3.9% of one hull transit at the imposed 30 kn. Forces remain startup evidence.
Why mesh checks disagree: all 14 flagged R18 cells pass the builder’s whole-cell determinant check but fail the final internal-face connectivity check. The two measures are different; the final failure is retained.
Download latest findings and remaining work · Download boat reference
- Boat setup: 4,100 kg and equipment recorded; CG datum/direction and vertical CG still needed.
- Mesh: repair remaining connectivity and shape defects while retaining wall layers.
- Flow: establish loaded equilibrium, longer stability and settled forces.
- Performance: mesh/time-step sensitivity and sea-trial validation pending.
What we need to finish
Target: one trustworthy 4,100 kg calm-water result, checked against the real boat.
- LW team: mark the CG reference and direction for 2,750 mm; provide vertical CG and the loaded weight breakdown.
- LW team + CAD: confirm sealed hull surfaces near the heavier-load waterline and provide measured bow/stern drafts.
- CFD: repair remaining mesh defects, establish loaded equilibrium and near-wall resolution, then demonstrate stable settled forces and numerical sensitivity.
- LW team: confirm the drive model/ratio and both propeller markings; collect paired reciprocal sea-trial observations.
- Validation: compare the accepted model with measurements before engine/propeller matching or wave predictions.
Provisional mass-only calculation: 4,100 kg displaces 4.00 m³ at assumed seawater density 1,025 kg/m³. Holding trim at zero raises the waterline about 36 mm. Artificial closure patches require review; this is not a loaded-equilibrium result and has not changed the CFD setup.
Download full status and remaining-work list · Download engineering input sheet
Sea-trial log
Quick entry: time, RPM and GPS speed. Add fuel flow when available. Measurements stay separate from simulated results.
Public shared log · no sign-in required. Anyone with the link can read, add and edit observations. Do not enter private information.
Connecting to the saved log...
The live cockpit shares saved observations with everyone using this link. The portable review exports observations to files; it cannot save to the online log. Exported CSV contains the loaded records only.
| Date / time | RPM | Speed · kn | Fuel · L/h | L/nm | Load · kg |
|---|
Measured-data comparison pending: no observations loaded. There is no validated CFD performance curve yet.
Observation edit history
History is retained from this update onward. For existing observations, the first retained entry is their current state. Restoring loads an earlier version into the form; review it and save to create a new revision.
No observations loaded.