LES cooperated with the second order full extension ETG finite element method is applied to simulate three typical problems concerned with convection heat transfer with sufficient experimental data. By comparing the numerical results with the experimental results, LES is proved to be of better accuracy and stability when it is used to solve the problems concerned with convection heat transfer. The time history of the flow field and temperature field can be reflected better, and abundant information of the fields can be obtained. Furthermore the details of the change in the vortex structure can be captured.

應(yīng)用大渦模擬與二階全展開ETG有限元離散格式相結(jié)合的方法對具有實驗基礎(chǔ)的三個典型對流換熱問題進行了數(shù)值模擬一级毛片AAAAAAA免费视频，并將模擬結(jié)果與相應(yīng)的實驗結(jié)果進行對比，證明了大渦模擬應(yīng)用于對流換熱問題中具有較高的穩(wěn)定性和精度1313精品午夜电影无码不卡，能夠較好地反映流場和溫度場的時變過程黄色网站免费看视频免费看，提供豐富的溫度場和流場信息，捕捉流場中旋渦結(jié)構(gòu)的變化細節(jié)免费级A片一级毛片一级，尤其適合于邊界形狀復(fù)雜的區(qū)段內(nèi)含有大尺度各向異性渦的流動和換熱問題的計算精品欧美一区二区在线观看视频。

In the process of developing the two-dimensional mathematical model of the human thermoregulation system, convection heat transfer between blood and tissue is studied, the methods for calculating blood convection heat transfer are developed.

在建立和發(fā)展二維人體熱調(diào)節(jié)系統(tǒng)數(shù)學(xué)模型的過程中，本文對血液與人體組織間的對流換熱進行了分類研究18岁的黄色毛片，發(fā)展了不同類型血液對流換熱的計算方法人人揉人人操。

At last the paper realized the advantages and disadvantages of passive solar building and adnvanced some suggestions in future research. From another point, the paper logged the process of the building of the experimental equipment and the mounting of the measurement equipments that accumulated some operating experimence.Carrying experiments, calculating and analyzing the experimental data for more than 2 years, the paper gained some constructive conclusions. In winter the indoor air temperature and RH are lower than comfort criteria, but people feels very comfortable in the passive solar house. The thermo-circulation formed by Trombe wall play an important role in improving indoor air temperature and RH. Based on the analogy analysis theory, the natural convection heat transfer in the air gap can be treated as superposition of two natural convection heat transfer processes occurring over isolated isothermal vertical flat plate, in this case namely the massive wall and glazing. Two empirical formulas for Q and Nu are obtained. The investigation shows that the optimal time to open the damper should comply with the period that the thermo-circulation happens which can be controlled by thermal response characteristics of Trombe wall surface temperature and air temperature in the air gap.

經(jīng)過兩年多的實測和計算，根據(jù)傳熱學(xué)www视频、流體力學(xué)A片www.、統(tǒng)計學(xué)等學(xué)科的基礎(chǔ)理論，對大量數(shù)據(jù)進行整理歸類激情网址视频在线、分析討論日本黄色插逼播放，主要得到如下結(jié)論：(1)冬季，含有特朗貝墻體的被動式太陽房室內(nèi)熱濕環(huán)境較舒適性標(biāo)準(zhǔn)偏低色色色色色色网站视，但人體感覺比較舒適欧美在线播放你懂的，特朗貝墻體形成的熱循環(huán)通風(fēng)在調(diào)節(jié)室內(nèi)溫度和相對濕度方面起到很大的作用；(2)特朗貝墻體空氣間層自然對流可以看作是兩個等溫獨立大平板的自然對流換熱過程的疊加国产一级牲交大片，通過與大平板自然對流理論類比獲得了計算熱循環(huán)過程中對流換熱量的經(jīng)驗公式久九热精品；(3)特朗貝墻體通風(fēng)口的啟閉可以根據(jù)玻璃幕墻內(nèi)壁面溫度、蓄熱墻體外壁面溫度和空氣間層進出口空氣溫度之間的關(guān)系來進行控制操五十岁肥熟好多水，從而有效地阻擋冬季冷循環(huán)的發(fā)生国内自拍2022；(4)夏季，如沒有有效的通風(fēng)降溫措施啦啦啦免费观看www，被動式太陽房內(nèi)會產(chǎn)生明顯的過熱一国产区视频。

convection heating：對兩供熱

convection heat transfer 對寥傳達 | convection heating 對兩供熱 | convective heat exchange 對寥交換

convection heating：對劣熱

對蓮熱系數(shù) convection heat transfer coefficient | 對劣熱 convection heating | 對療 convection potential

heat transfer area：傳熱面

不透熱的 heat tight | 傳熱面 heat transfer area | 強制對蓮熱 heat transfer by forced convection