Order Window Dynamics Ver.2.0

Order-Window Dynamics (OWD) is a carrier-based framework for the practical analysis of formation, persistence, transition, and failure in open dissipative systems. Its purpose is to translate domain-specific physical models into explicit viability margins and bounded operating windows that can support engineering assessment, model comparison, risk classification, and the identification of limiting subsystems. The framework separates system dynamics, thermodynamic admissibility, and observable order selection without replacing established governing equations or modifying the second law of thermodynamics. It was developed through analytical reduction and retrospective stress tests involving tropical cyclones, fusion-plasma exhaust, transitional pipe flow, critical heat flux, and hypersonic combustion. These cases form a development set and are not presented as independent predictive validation. The present working paper defines the theoretical architecture, operational variables, uncertainty treatment, falsification criteria, and no-rescue rules of OWD. It also specifies a preregistered blind pipe-flow challenge as the first prospective confirmatory test. The publication is intended to provide a reproducible basis for practical application, critical evaluation, and further cross-domain research.