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DESIGN JOURNAL / CAD + FLOWLaptop wall mount

Minimalist mounting and ducted cooling, with the geometry and airflow evidence together.

REVISION H / FINAL SAVED RESULTS / 9 SEPTEMBER 2026

More from the recorded flow.

Final pressure, speed and vorticity maps with velocity arrows, complete saved probe histories, and updated local lip-flow measurements. Everything here comes from existing output; no additional simulation was run.

96.26 msStartup · 2,552 probe snapshots
69.44 msFlowing initialization · 4,008 probe snapshots
22 probesPressure + velocity at each saved probe time

The clocks belong to separate runs. The flowing-field maps use the final saved state at 69.44 ms; its particle video ends slightly earlier, at 68.09 ms. The startup video already reaches its final saved state.

What the lip measurements show

Both final snapshots have outward and inward flow across the front opening at the sampled side sections. Net flow is outward. The late-window wall-side lip probes are below the ambient-reference probe; the magnitude depends on position and initialization.

Wall-side lip probeAveraging windowMean relative pressurePressure fluctuation RMS
Startup / left86.26–96.26 ms-0.071 Pa0.015 Pa
Startup / right86.26–96.26 ms-0.025 Pa0.007 Pa
Already flowing / left59.44–69.44 ms-0.219 Pa0.059 Pa
Already flowing / right59.44–69.44 ms-0.352 Pa0.008 Pa

Time-weighted mean and RMS over the final 10 ms, using piecewise-linear interpolation. These are local point measurements in the model, not a surface suction load.

Final local volume flux per unit span / m²/s

Section at X = ±111 mmFront outwardFront inwardFront net outwardChannel net upward
Startup / left0.010730.002070.008660.05914
Startup / right0.010750.002180.008570.05813
Already flowing / left0.009430.000150.009280.08123
Already flowing / right0.009580.000110.009470.05677

The front line joins the divider tip to the laptop nose shoulder. The upward cut is at Z = 20.001 mm. These line integrals are per unit span, not full-width L/s, fan delivery, or a closed three-dimensional flow balance. Exact definitions and covered fluid lengths are in the summary download.

The model is isothermal: it does not calculate battery, lid or surface cooling. Negative local pressure alone does not establish a Bernoulli mechanism. The mesh and faster visual timesteps remain exploratory; no validated shedding frequency or steady-state claim is made.

Startup / final saved field

Final sampled time: 96.26475 ms. Pressure maps use the solver reference and the same ±12 Pa scale. Arrows show actual in-plane velocity at X = +111 mm, with CAD outlines.

Startup / final saved field pressure map with flow arrows
Complete air path, front lip and hinge discharge. Open full image ↗
Startup / final saved field pressure, speed, Courant and boundary-flux histories
Full saved histories. The green band marks the final 10 ms; plotted probe pressures are relative to the ambient probe. Open full image ↗

The dashed line marks the change at 38.31885 ms to fixed 80.93 µs visual timesteps. The Courant axis includes the higher values in this extension instead of clipping them to the original adaptive limit.

Already flowing / final saved field

Final sampled time: 69.44024 ms. Pressure maps use the solver reference and the same ±12 Pa scale. Arrows show actual in-plane velocity at X = +111 mm, with CAD outlines.

Already flowing / final saved field pressure map with flow arrows
Complete air path, front lip and hinge discharge. Open full image ↗
Already flowing / final saved field pressure, speed, Courant and boundary-flux histories
Full saved histories. The green band marks the final 10 ms; plotted probe pressures are relative to the ambient probe. Open full image ↗

Data, provenance and earlier evidence

The CSV downloads retain all 22 probes, including left, center-right and right positions. JSON includes source hashes. Statistics use physical-time weighting, so the change in sampling interval does not overweight the earlier adaptive segment.

Startup

Already flowing

The iteration-400 steady images, early full-width opening integrals and earlier installed-airflow package retain their original labels and provenance. They represent different numerical states or earlier geometry, so their numbers are not relabeled as these final transient results.

Older compressed diagnostic downloads were rebuilt where decompression failed, using original checkpoint files and their recorded content hashes. Archive repair record.