A Unifying Field Theory Based on Primordial Fluid Global Shear Circulation Model

Contemporary physics faces persistent theoretical incompatibilities across classical mechanics, quantum mechanics and general relativity. The Standard Model of particle physics incorporates numerous phenomenological fitting parameters and lacks a self-consistent dynamic framework to describe dark matter and dark energy. Probabilistic mathematical formalisms in quantum domains cannot be matched with intuitive continuous medium evolution pictures. Additionally, the single-direction entropy growth deduction from classical thermodynamics creates theoretical tension against cyclic cosmic observational evidence. The vortex atom theory proposed by Lord Kelvin in 1867 provides referential insight into interpreting matter via fluid topology, yet it is constrained by multiple theoretical bottlenecks including static aether medium, single-layer vortex configuration, overloaded thermodynamic degrees of freedom, and absence of quantitative dynamic systems, making it incompatible with subsequent optical and quantum experimental results. This research constructs a spherically closed cosmic framework with compressible dynamic primordial fluid as the fundamental medium. Two foundational postulates are proposed, and a unified governing equation for global shear fields is derived. Three self-consistent theoretical systems are established: axial periodic frequency evolution, binary pressure-gradient-induced gravity, and differentiated entropy evolution of northern and southern hemispheres, achieving extension and revision of classical vortex frameworks. The model hypothesizes a steady axial circulation consisting of jet outflow at the North Pole and backflow convergence at the South Pole, with a complete frequency evolution sequence: ultra-high-frequency topological solitons at the North Pole → continuous frequency reduction within the Northern Hemisphere fluid → frequency elevation at the equatorial strong shear layer → continuous frequency rise during fluid reconstruction in the Southern Hemisphere → ultra-dense high-frequency topological structures at the South Pole. Bounded by the equatorial plane, two types of fluid pressure-gradient effects dominate global gravitational behavior respectively. Northern Hemisphere gravity originates from outward medium diffusion of primary high-frequency solitons, while Southern Hemisphere gravity arises from inward convergence of global fluid. From a thermodynamic perspective, topological dissociation and disorder growth dominate medium evolution across the Northern Hemisphere, whereas scattered fluid continuously reconstructs large-scale ordered topological structures throughout the Southern Hemisphere. The time evolution arrow remains unidirectional in both hemispheres, with divergence only in medium ordering trends. For the closed spherical cosmic system, the total entropy of global fluid maintains dynamic equilibrium, offering a novel interpretative pathway for the heat death paradox. Relying on a single fluid dynamic equation, this framework uniformly describes cosmic large-scale evolution, microscopic topological solitons, electromagnetic-optical propagation, relativistic medium deformation, and quantum apparent phenomena. Quantum superposition and wavepacket contraction are interpreted as evolutionary behaviors of shallow transient fluid vortices. Multiple quantifiable astronomical and microscopic experimental predictions are put forward, together with supporting numerical simulation and observational verification schemes, forming a continuous-medium unifying field framework based on mechanical causality.