本研究探討由Gioia和Chakraborty提出的紊流摩擦係數的理論模型（GC模型）。GC模型研究了在粗糙管道中的紊流摩擦係數，展示了該係數與雷諾數和管壁相對粗糙度的相關性。本研究主要介紹了GC模型使用的紊流現象理論。在固定粗糙度條件下變化模型參數，以觀察參數對摩擦阻力係數的影響，希望藉此學習紊流摩擦係數的物理意義。;This paper discusses theoretical model of the turbulent friction factor proposed by Gioia and Chakraborty (GC model). The GC model studies the friction factor in turbulent rough pipes, showing its dependence. On the Reynolds number and the relative roughness of the pipe wall. The study here introduces briefly the phenomenological theory of turbulence used by the GC model. The model parameters are varied under a fixed roughness condition to observe the influence of a parameter on the friction factor, hoping to gain physical understanding of turbulent friction.
