INFLUENCE OF GREEN AREA RATIO ON OUTDOOR THERMAL ENVIRONMENT WITH COUPLED SIMULATION OF CONVECTION, RADIATION AND MOISTURE TRANSPORT

Abstract

Outdoor therma】environment in summer become worse due to a change of land cover and an increase Qf artificia 】heat release according to 山 e urban developmenL In this paper， 1he au 【 hors have deve ］ oped a new method for predicllng the human comfort i 冂 ou 重 door thermal space with the ajd of CFD （ Computational F】 uid Dynamics ） ． Fu曲 ermore ， 出 e effect of greening on ou 【 door wlnd and lhermal environment was analyz 巳d． Spatial dis 紅 ributio ロ of SET 零 （ Slandard Effective Temperature ） was calcu 】 atod in order to assess the pedestrian level comfort 巳sing 【 he data given from 1he CFD predidions ． TWG cases of predictions were carrled out ， In case1 ， green area ratio of ground surface was assumed lO ％ ， while 【 he green area ra1io of gro 巳 nd surf血 ce was changed to 100 ％ in case2 ． Bycomparing theSET 掌 distrib 巳 Iionsin both cas 巳s ， offects of greenlng were lhus clarified ．