建築物對不同開口位置的通風效果

A study to well ventilated effect at different aperture position

王佑任(Iu-Ren Wang)

指導教授 ： 邱金火

中原大學/工學院/土木工程研究所/碩士(2010年)

https://doi.org/10.6840/cycu201000946

摘要

摘要
本研究基於健康、節能、舒適之觀點，以住宅單元為主要模擬對象，以計算流體力學(CFD)探討不同開窗位置、風向等影響因子下，單面通風對於室內環境品質之通風換氣效果與影響，藉以改善室內空氣品質，以達到舒適度與健康之需求。
本研究以固定風向，研究：迎風面、側風面以及背風面之不同單面開窗位置，對室內通風效果。從模擬的數據結果顯示，本研究之所有模型模擬出的結果，皆以〝側風面〞的開窗位置，其所產生的紊流動能、紊流消散度以及紊流黏度的變化是最明顯的。此結果與前人的，低層建築在其側風面開口有最佳的通風效果一致，因此可以證明本研究模擬結果正確。
本研究考慮X：3.6m，Y：3.0m，Z：3.0m所形成之長方體建築物，風向為(+y)方向時，在XZ平面(迎風面)開窗，就各平面比較而言，則側風面可以得到最佳的通風效果。若風向為(+y)方向時，開窗位置在XZ平面中央時，側風面有最大之通風效果。若風向為(-X)軸方向時，就各平面比較而言，YZ平面(迎風面)開窗可以得到最佳通風效果。若風向為(-X)方向時，YZ平面開窗位置向左偏0.6m時(即距Z軸0.9m處)，其迎風面有最大之通風效果。

關鍵字

CFD ； 單面通風 ； 紊流模型 ； 自然通風

並列摘要

Abstract

This research was based on health, energy saving, comfortable perspective to simulate the residential unit as the main simulation object by using the method of computational fluid dynamics (CFD) to study , the single-sided ventilation for indoor air quality ventilation effect and impact for different window positions , wind directions and other factors. This doing is to improve indoor air quality and to achieve the comfort level and health needs.
In this study , the indoor ventilation effects were studied for the case of single-sided opening on the windwards side, lateral side and back windwards side respectively for a fixed wind direction.
From the results of the simulation data, it showed that the window openings on the lateral side for all cases had the most obvious of variations for turbulence kinetic energy, turbulence dissipation and turbulent viscosity. This result is consistent with the previous study for which the low-rise building has the best air ventilation for the opening on the lateral side. It showed that the simulations in this study are correct.
In this study, a cuboid building formed by X=3.6m,Y=3.0m,Z=3.0m was considered. If the wind is in the positive Y-axis direction, the window opening at the XZ plane (windward plane) had the best ventilation effect in the lateral plane(YZ plane).If the wind is in the same direction the window opening at the center of the XZ plane , the ventilation is the best in the lateral YZ plane among the three locations of the opening.
If the wind is in the negative X-axis direction , the YZ plane window opening received the best ventilation among the all planes. If the wind is in the same direction , the window opening is shifted to left by 0.6m(i.e. 0.9m from Z-axis),the windward plane (YZ plane) had the best ventilation.

並列關鍵字

CFD ； Natural ventilation ； Turbulence model ； Single-sided ventilation

參考文獻

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