装备环境工程
裝備環境工程
장비배경공정
EQUIPMENT ENVIRONMENTAL ENGINEERING
2014年
1期
48-53
,共6页
马建军%孙侠生%李喜明
馬建軍%孫俠生%李喜明
마건군%손협생%리희명
环境实验室%气流组织%温度均匀性%数值模拟%保温层
環境實驗室%氣流組織%溫度均勻性%數值模擬%保溫層
배경실험실%기류조직%온도균균성%수치모의%보온층
climatic test chamber%ventilation%temperature uniformity%CFD%thermal insulating layer
目的：研究送风参数及围护结构对飞机结构及机构环境条件下功能性和耐久性实验室温度均匀性的影响。方法采用CFD方法对实验室的气流组织进行数值模拟，根据气流组织评价标准对工作区的温度均匀性进行分析。结果送风温差越大、送风速度越小温度场均匀性越差，保温层较厚时，温差过大将导致工作区温度分布达不到设计要求。结论相同温差下，减少送风口数量并提高单个送风口的送风速度有助于提高温度均匀性。
目的：研究送風參數及圍護結構對飛機結構及機構環境條件下功能性和耐久性實驗室溫度均勻性的影響。方法採用CFD方法對實驗室的氣流組織進行數值模擬，根據氣流組織評價標準對工作區的溫度均勻性進行分析。結果送風溫差越大、送風速度越小溫度場均勻性越差，保溫層較厚時，溫差過大將導緻工作區溫度分佈達不到設計要求。結論相同溫差下，減少送風口數量併提高單箇送風口的送風速度有助于提高溫度均勻性。
목적：연구송풍삼수급위호결구대비궤결구급궤구배경조건하공능성화내구성실험실온도균균성적영향。방법채용CFD방법대실험실적기류조직진행수치모의，근거기류조직평개표준대공작구적온도균균성진행분석。결과송풍온차월대、송풍속도월소온도장균균성월차，보온층교후시，온차과대장도치공작구온도분포체불도설계요구。결론상동온차하，감소송풍구수량병제고단개송풍구적송풍속도유조우제고온도균균성。
Objective To study the influence of supply air parameters and thermal insulating layer to temperature uniformity of climatic test chamber for aircraft structure and mechanism. Methods air flow distribution was numerical calculated with CFD software,temperature uniformity was analyzed according to ventilation standards. Results the bigger the different between the temperature of supply air and the chamber,the less air flow rate would be needed and the uniformity of the working area would be worse. Big different in supply temperature and room temperature will cause temperature distribution totally out of design under thick thermal insulating layer. Conclusion Reduce supply openings while increasing supply air speed will help increase the uniformity under the same supply temperature.
