装备环境工程
裝備環境工程
장비배경공정
EQUIPMENT ENVIRONMENTAL ENGINEERING
2013年
6期
117-122
,共6页
罗群生%史光梅%陈均%鲁亮%李明海
囉群生%史光梅%陳均%魯亮%李明海
라군생%사광매%진균%로량%리명해
温度环境试验%试件温度稳定时间%集中参数法%有限元法%结果比较
溫度環境試驗%試件溫度穩定時間%集中參數法%有限元法%結果比較
온도배경시험%시건온도은정시간%집중삼수법%유한원법%결과비교
temperature environmental test%specimen temperature stabilization time%lumped parameter method%finite element method%comparison of results
研究了温度环境试验中试件温度稳定时间的估算方法。以非稳态传热学理论为基础，分别用集中参数法和有限元法计算、分析试件的温度稳定时间。给出了集中参数法确定试件温度稳定时间的计算公式，确定了集中参数法的适用范围。研究了试件外表面与试验介质之间的传热系数确定方法，考虑风速、试件外形和试验介质性质对传热的影响。将集中参数法与有限元法计算、分析结果进行比较，相符性较好。
研究瞭溫度環境試驗中試件溫度穩定時間的估算方法。以非穩態傳熱學理論為基礎，分彆用集中參數法和有限元法計算、分析試件的溫度穩定時間。給齣瞭集中參數法確定試件溫度穩定時間的計算公式，確定瞭集中參數法的適用範圍。研究瞭試件外錶麵與試驗介質之間的傳熱繫數確定方法，攷慮風速、試件外形和試驗介質性質對傳熱的影響。將集中參數法與有限元法計算、分析結果進行比較，相符性較好。
연구료온도배경시험중시건온도은정시간적고산방법。이비은태전열학이론위기출，분별용집중삼수법화유한원법계산、분석시건적온도은정시간。급출료집중삼수법학정시건온도은정시간적계산공식，학정료집중삼수법적괄용범위。연구료시건외표면여시험개질지간적전열계수학정방법，고필풍속、시건외형화시험개질성질대전열적영향。장집중삼수법여유한원법계산、분석결과진행비교，상부성교호。
Based on transient heat transfer theory, temperature stabilization time was analyzed by lumped parameter method and finite element method respectively. The calculation formula of lumped parameter method and is application limitation was put forward. Considering the effect of wind speed, sample medium, and outer surface, the method to determine the heat transfer coefficient between sample medium and outer surface was studied. The results of lumped parameter method were compared with that of finite element method, and it was founded that they are consistent with each other.
