Abstract
Kotatsu is one of the traditional heating methods in Japan, and especially Hori-Gotatsu (trench kotatsu) is sometimes used all year round as a part of living space because it is integrated with a dwelling unit. There have been few studies on the thermal environment of Hori-Gotatsu, and especially there are no studies on Hori-Gotatsu. The purpose of this study is to evaluate the thermal comfort of Hori-Gotatsu. In this paper, the thermal environment of Hori-Gotatsu is investigated by assuming the thermal environment of Hori-Gotatsu by CFD analysis and inputting the skin temperature calculated from the JOS-2 model to the Zhang model. In this study, it was found that there was almost no difference depending on the turbulence model used, but there was a significant difference in skin temperature by site depending on the size of the mesh used, which resulted in a spillover effect to thermal sensation and comfort.
