自然対流の卓越した室の空気性状に関する研究

概要

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When Computational Fluid Dynamics (CFD) are applied in stable environments where natural convection dominates, the prediction of airflow properties and temperature must consider many indefinite elements. Among others, these include the selection of an appropriate turbulence model, grid generation for calculation, wall boundary conditions and outlet turbulences. To verify the effectiveness and accuracy of CFD analysis on clarifying airflow properties in environments where natural convection is prevalent, an analysis of temperature and air velocity was conducted in a real-scale model room with under-floor heating. To verify the validity, reproducibility, and reliability of the model, CFD analysis was made modifying the following parameters: 1) Temperature wall boundary conditions: Reynolds analogy and Two Layers model 2) Grid density near heated and cooled surfaces In general, CFD analysis was capable of accurately describing the various parameters that affect air velocity and temperature distribution in an indoor environment where natural convection is dominant. This has important implications in so far as the prediction of indoor environmental characteristics is concerned.
明治大学の論文