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(diǎn),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(jué)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(cè)試了砂粒顆粒大小和砂層厚度對(duì)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(duì)氣旋強(qiáng)烈爆發(fā)的過(guò)程進(jìn)行干濕對(duì)比數(shù)值模擬試驗(yàn),得出:潛熱釋放使對(duì)流層項(xiàng)和等溫面抬高,氣流在高層的上升冷卻形成擾動(dòng)槽,其適應(yīng)過(guò)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(diǎn)測(cè)溫、常熱流假設(shè),任意未來(lái)時(shí)間步長(zhǎng)的導(dǎo)熱反問(wèn)題算法求解浸沒(méi)水射流冷卻過(guò)程的熱流密度;采用有限容積法離散方程,附加源項(xiàng)法處理邊界條件。