【正文】
ing air distribution, and drew some conclusions that the velocity, temperature distribution and thermal fort of replacement ventilation was superior to that of the topsupplying with downexhausting air distribution, but the pollutant control was inferior if the pollution source was at the low position. Consequently, there isn’t a unique design scheme suitable for any practical projects to obtain high indoor air environment quality, and it’s essential to consider the specific conditions in order to obtain the optimal air distribution.Key words: Air distribution, Thermal fort, Indoor air quality, CFD, Numerical simulation1. 前言室內(nèi)空氣環(huán)境包括室內(nèi)熱濕環(huán)境和室內(nèi)空氣品質(zhì),而合理的氣流組織是實(shí)現(xiàn)室內(nèi)熱濕環(huán)境和保證空氣品質(zhì)的最終環(huán)節(jié)。氣流組織受到各種因素影響,揭示其分布規(guī)律比較困難。傳統(tǒng)做法是通過(guò)模型實(shí)驗(yàn),得出經(jīng)驗(yàn)或半經(jīng)驗(yàn)公式,然后在這些公式基礎(chǔ)上進(jìn)行氣流組織計(jì)算。這樣不僅耗費(fèi)人力、物力,而且受模型實(shí)驗(yàn)的條件限制,有時(shí)難以模擬出復(fù)雜空間流動(dòng)的全部特征,同時(shí)由于實(shí)驗(yàn)條件不同,得出的公式也各異,因此局限性很大。研究合理的房間氣流組織數(shù)值模擬方法成為進(jìn)行高性能房間空調(diào)設(shè)計(jì)的必然趨勢(shì)。本文探討房間氣流組織的數(shù)值模擬,對(duì)數(shù)值計(jì)算結(jié)果進(jìn)行分析,得出結(jié)論,以期能為實(shí)際暖通空調(diào)工程設(shè)計(jì)提供理論參考及科學(xué)依據(jù)。2. 氣流組織及其評(píng)價(jià)指標(biāo)空調(diào)房間氣流分布形式取決于送排風(fēng)口型式及其布置方式。常見(jiàn)的通風(fēng)形式有上送下回