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Outline
Aiming to address the issue of uneven air supply in data center fan‑wall air supply systems，a numerical model was established using computational fluid dynamics （CFD） simulation technology.The model was validated using measured data.Based on this validated model，an optimization study on airflow distribution in the data center was conducted for the air supply system.The impacts of optimization schemes，such as optimizing the air supply angle and adding rack inlet deflectors，on indicators such as the maximum inlet temperature of IT equipment，the average inlet temperature rise of risk racks，and the return air temperature index were analyzed systematically.The results show that optimizing the air supply angle and adding rack inlet deflectors can enhance the uniformity of airflow distribution；among which，when a 100 mm-wide，30°-inclined rack inlet deflector is used，the average inlet temperature rise of risk racks is significantly reduced by 0.81 °C，and the temperature uniformity in the equipment room is optimal.In contrast，reconfiguring the positions of air supply outlets does not optimize the airflow distribution in the data center.This research can provide a reference for the design of fan‑wall air supply systems.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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