流体力学演进的多重解释:范式转换、模型依赖现实观与复杂系统视角OA

The evolution of fluid mechanics has undergone multiple critical phases,transitioning from classical fluid theories to the application of modern numerical simulation techniques.This study aims to elucidate the progression of fluid mechanics by integrating Thomas Kuhn's paradigm shift theory,Stephen Hawking's model-dependent realism,and the principles of complexity science.The research addresses the purpose,background,and significance of understanding fluid mechanics'development through these theoretical lenses,highlighting its pivotal role in engineering advancements and addressing global challenges such as energy sustainability,climate change,and environmental pollution. Employing a qualitative methodological framework,this study conducts a historical and theoretical analysis of fluid mechanics'advancements.The research examines key milestones,including the transition from Newtonian fluid theory to the Navier-Stokes equations and the subsequent evolution of modern turbulence models like large eddy simulation(LES)and direct numerical simulation(DNS).By applying Kuhn's paradigm shift theory,the study identifies revolutionary changes that have redefined the scientific community's understanding and approach to fluid dynamics.Hawking's model-dependent realism is utilized to demonstrate how various models in fluid mechanics are not mere reflections of objective reality but are instead tools tailored to specific observational and research requirements.Complexity science principles are incorporated to reveal the nonlinear,multi-scale,and self-organizing characteristics inherent in phenomena such as turbulence,providing new insights into model optimization and precise simulation.The research process involved a comprehensive review of historical developments,theoretical frameworks,and contemporary advancements in fluid mechanics.Empirical verification was achieved through the analysis of case studies that illustrate the interplay between paradigm shifts,model selection,and the emergence of complex phenomena in fluid dynamics.The findings indicate that the progression of fluid mechanics is marked by the dynamic interaction between scientific paradigms and the diversity of models employed,underscoring the non-linear nature of scientific advancement. Conclusions drawn from this study highlight that the evolution of fluid mechanics exemplifies the intricate relationship between theoretical innovation and practical application.The integration of Kuhn's,Hawking's,and complexity science theories provides a robust explanatory framework for understanding scientific revolutions and model adaptability in fluid mechanics.This multifaceted approach reveals that advancements in fluid mechanics are not solely the result of incremental knowledge accumulation but also of transformative shifts that redefine the field's foundational principles and methodologies.The study's innovative contribution lies in its comprehensive theoretical synthesis,offering a nuanced perspective on scientific progress in fluid mechanics.Policy implications include the need for fostering interdisciplinary research and supporting adaptive model development to address complex engineering challenges.Academically,this research facilitates deeper scholarly discourse on the philosophy of science and engineering,promoting a more holistic understanding of scientific revolutions and model dependencies.Ultimately,this study enhances the academic and practical value of fluid mechanics,providing valuable insights for future technological advancements and scientific inquiries.