2차원(次元) 온돌 상난방(床煖房)시스템의 연도내 열유동(熱流動) 및 열전달(熱傳達) 수치해석(數値解析)

Numerical Analysis of Heat Flow and Heat Transfer in Flue Channel of Two-Dimensional Ondol Panel Heating System

Numerical analysis was applied to a simplified two-dimensional Ondol heating model which consists of heating space on the top of it along with radiant and convective heating floor panel, flue channel in the midway and rectangular underground soil region at the bottom. These three components constitute a system thermally coupled at the top and bottom interfaces of the flue channel. Investigated in the present paper are effects with variations of the Reynolds numbers of 100, 200, and 300, Grashof numbers of $0.1{\times}10^6$ and $0.3{\times}10^6$ and aspect ratios of 15 and 20 on the heat transfer and fluid flow characteristics of two-dimensional Ondol heating model by computer simulation.