Modern physics suffers from multi-layer theoretical incompatibility: classical mechanics, quantum mechanics and general relativity lack a unified underlying dynamical framework. The Standard Model of particle physics relies on numerous phenomenological free parameters and fails to provide self-consistent dynamical descriptions of dark matter and dark energy. The probabilistic mathematical formulation of quantum phenomena lacks an intuitive continuous medium evolution picture. The unidirectional entropy growth inference of classical thermodynamics creates theoretical tension against cyclic cosmological observations. Lord Kelvin’s 19th-century vortex atom theory offered a valuable reference for interpreting material ontology via fluid topology, yet it was constrained by multiple theoretical bottlenecks including a static aether medium, single-layer vortex structures, overloaded thermodynamic degrees of freedom, and the absence of a quantitative dynamical system, rendering it incompatible with subsequent optical and quantum experimental results. This research constructs a spherically closed, mirror-symmetric cosmic framework based on a compressible dynamic fundamental-particle continuous medium. Two fundamental postulates are proposed, and a unified dynamical governing equation for the global shear field is derived. Three self-consistent theoretical systems are established: global resonance frequency-based hierarchical material classification, bidirectional fluid compression equivalent gravity, and north-south hemispheric mirror-equivalent entropy evolution. The classical vortex ring framework is expanded and revised accordingly. The model postulates a cosmos symmetric across the equatorial plane with fully mirrored northern and southern hemispheres, differing only in vortex spin direction and bulk medium motion trends. Fundamental-particle vortices in the northern hemisphere expand clockwise outwards, while those in the southern hemisphere contract counterclockwise inwards, forming a complete cyclic circulation with jet expansion at the North Pole and convergent collapse at the South Pole. The full frequency evolution sequence proceeds as: ultra-high-frequency dark matter vortex rings at the North Pole → continuous frequency reduction of fluid flowing across the northern hemisphere → strong shear shock layer at the equator → continuous frequency elevation and reconstruction of fluid across the southern hemisphere → ultra-dense ultra-high-frequency dark matter vortex rings at the South Pole. Observed gravitational effects do not arise from mutual attraction between media but instead emerge as apparent equivalents generated by omnidirectional compression from expanding and contracting fundamental-particle fluid flows. Separated by the equatorial plane, two paired mirror compression effects are distributed globally: the northern hemisphere exhibits expansion-compression equivalent gravity originating from outward diffusion of high-frequency vortex rings at the North Pole, whereas the southern hemisphere hosts convergence-compression equivalent gravity driven by inward bulk medium collapse. Thermodynamically, entropy growth and reduction fluctuations occur only in localized regions of each hemisphere, with no hemisphere-scale unidirectional ordering trend. The global temporal evolution arrow points irreversibly forward, and total cosmic entropy within the closed spherical universe maintains dynamic equilibrium, offering a novel interpretive pathway for the heat death paradox. Relying on a single set of fluid dynamical equations, the model uniformly describes macroscopic cosmic evolution, microscopic topological vortex solitons, electromagnetic wave propagation, relativistic medium deformation effects, and quantum-scale apparent phenomena. Quantum superposition, wavefunction collapse, and decoherence all correspond to transient shallow fluid vortex evolution behaviors. Cosmic matter is categorized by vortex resonance frequency, with three vortex families coexisting synchronously across both hemispheres: ultra-high-frequency dark matter, intermediate-frequency visible matter, and low-frequency dark matter. Large-scale mechanical spherical shells surrounding the Solar System and galaxies are regions enriched in low-frequency dark matter. The equator acts as a shock interface between counter-rotating northern and southern vortices; intense shear ruptures all closed vortex topologies, precluding stable topological solitons and leaving only free fundamental particles with transient vortices that form and dissipate instantaneously. Multiple quantifiable astronomical and microscopic experimental predictions are presented alongside numerical simulation and observational validation schemes, establishing a monistic continuous-medium unified field theoretical framework grounded in mechanical causality.
S Hücümenog ̆ lu (Tue,) studied this question.