In spite of these advantages , at first it seems outrageous to try to store a bec ? thought to be the coldest object in the universe ? within a hundred microns of a room - temperature surface ( that of the microchip ) 雖然有這些優(yōu)點,要將bec (應(yīng)該是宇宙里最冷的東西)在室溫下存放于微晶片表面幾百微米內(nèi),這種想法仍然讓人覺得很夸張。
Experimental study is performed on the mist cooling of heated high temperature surface covered by a sand layer to investigate the effects of both sand size and thickness of sand layer on heat transfer charateristics in order to enhance heat transfer of film boiling region 摘要研究了高溫金屬面上覆蓋砂層后的噴霧冷卻換熱特性,測試了砂粒顆粒大小和砂層厚度對換熱特性的影響。
Wet and dry numerical simulation tests for explosive cyclone over western pacific were performed . by contrast the results show that : tropopause and constant temperature surface were raised by latent heat release in upper level and disturbance trough was produced because air flow ascended and became cold . owing to this process adaption , inertial instability emergenced 對氣旋強烈爆發(fā)的過程進行干濕對比數(shù)值模擬試驗,得出:潛熱釋放使對流層項和等溫面抬高,氣流在高層的上升冷卻形成擾動槽,其適應(yīng)過程使高層出現(xiàn)慣性不穩(wěn)定。
A numerical method , based on single temperature sensor , constant heat flux assumed and arbitrary number future time steps , was employed to determine the heat flux during rapid cooling on high temperature surface with multiply immersed impinging water jets the finite volume discretization method and treatment of boundary condition were presented 摘要基于單點測溫、常熱流假設(shè),任意未來時間步長的導(dǎo)熱反問題算法求解浸沒水射流冷卻過程的熱流密度;采用有限容積法離散方程,附加源項法處理邊界條件。