SABU-RECON-2026: On the Physical Plausibility of the Sabu Disk as a Passive Flow-Stabilizing Geometry of the Sabu Disk as a Passive Flow-Stabilizing Geometry

The Sabu Disk (Object S3111) is a stone artifact with a central bore and three symmetrically curved lobes whose function remains unresolved. This preprint proposes a conservative, physics-based hypothesis by evaluating the geometry for compatibility with known principles of passive hydraulic flow stabilization. The disk is analyzed as a potential guiding element within an annular flow configuration, where asymmetric pressure fields could generate restoring forces under off-axis displacement. The objective is not to assert historical intent or operational proof, but to establish physical plausibility and to fix the core hypothesis in a public, citable form. Detailed simulations and experimental validation are explicitly deferred to future work.