熱流向量 的英文怎麼說
中文拼音 [rèliúxiàngliáng]
熱流向量
英文
heat-flow vector-
In heterogeneous anisotropic materials the heat flow vector and conductivity are more complex.
在各向異性的非均質材料中,熱流向量和熱導率很復雜。Heat convected, a mode of motion developed by such combustion, was constantly and increasingly conveyed from the source of calorification to the liquid contained in the vessel, being radiated through the uneven unpolished dark surface of the metal iron, in part reflected, in part absorbed, in part transmitted, gradually raising the temperature of the water from normal to boiling point, a rise in temperature expressible as the result of an expenditure of 72 thermal units needed to raise i pound of water from 50 to 212 fahrenheit
燃燒所引起的運動形式之一-熱對流傳熱,不斷地加速度地從熱源體傳導給容器中的液體,由那凹凸不平未經打磨的黑色鑄鐵面把熱向周圍發散出去一部分反射回來,一部分被吸收,另一部分被傳導,使水的溫度從常溫逐漸升到沸點。這種溫度的上升可作為消費結果標志如下:將一磅水從華氏五十度加熱到二百十二度,需耗七十二熱量單位。Secondly, based on the microbeam analytical technique, on the one hand, through investigating the characteristic of major elements in the mantle minerals the author acquired the static information from mantle ; on the other hand, through multi - point analysis of a part of the minerals from mantle, the auther got dynamic information from mantle. finally, generalizating the fruits of this study and predecessors, the autor holds that the constituents of lithospheric mantle possibly includes spinel lherzolites, clinopyroxenites, websterite, dunite, harzburgites, garnet lherzite, phlogopite lherzite, eclogites, clinopyroxene megacrysts ; compared with east china and north china platform, the research field mantle shows the characteristics of higher degree of partial melting processes and more depleted mantle ; the. upper mantle beneath north hetian area is heterogeneous, with a tendency of deficit in a12o3 and lree from kaliyang in west hetian to the river basin of kalakshi river and yulongkashi river ; the subduction of the crust beneath north hetian has ever occurred in geological history and caused the mixing of mantle - crust ; the depth of the origination of basaltic magmas beneath north hetian exceeds 73km ; the thickness of the lithosphere beneath the research area amounts to 204. 9km ; the mantle beneath north hetian has geological condtions for forming diamond deposits
最後,綜合本區幔源礦物和地幔巖石的特徵以及地球物理資料,得出如下結論:本區上地幔的物質組成有尖晶石二輝橄欖巖、二輝巖、單斜輝石巖、純橄欖巖、方輝橄欖巖、石榴石二輝橄欖巖、金雲母二輝橄欖巖、榴輝巖;與中國東部以及華北地臺上地幔相比,研究區上地幔具有富集主元素中相容元素和虧損其中的不相容元素的特徵,局部熔融程度較高;上地幔存在橫向和縱向的不均一性,從西部的克里陽到喀拉喀什河和玉龍喀什河流域, al和lree富集程度呈下降趨勢,不同來源的相同礦物中主元素的含量差異較大;地質歷史時期這里可能發生過地殼俯沖並產生殼幔混合作用;玄武巖漿的起源深度73km ;從幔源重砂礦物的溫壓估算結果,可以推斷出巖石圈厚度可達204 . 9km ;綜合巖石圈物質組成特徵、巖石圈熱狀態、地幔溫壓狀態、氧逸度以及幔源巖石和幔源礦物的化學成分,認為研究區具備了金剛石成礦地幔地質條件。Heat flow from a hotter to a cooler body is a process of energy transfer tending to equalize temperature.
熱從高溫物體流向低溫物體是一個能量傳遞過程,它使溫度趨于均勻。Based on analysis of geologic foundation record about pingzhuang basin, a lot of sino - foreign geothermal geology record and investigation of field geology, measuring of ground temperature in person and geo - chemical analysis of ascension spring, gushing water of fault, the fact that the anomaly of geothermal gradient of pingzhuang basin, which is in region of low geothermal gradient, is caused by redistribution of conduction - oriented geothermal heat flow which is result from upheaval and depression of basin foundation bed is pointed out. after the field of ground temperature is simulated under the background of conduction - oriented geothermal heat flow by means of ansys, the characteristic of ground temperature distribution of top surface of basin foundation bed ( yixian team ) is revealed. the sound condition of transmissibility fault and feeding water source, which are imperative in formation of the low - medium temperature geothermal system of convective type, is possessed in pingzhuang basin
通過對平莊盆地基礎地質資料、國內外大量地熱地質資料的分析和野外地質調查、礦井實測地溫以及上升泉、斷層涌水的地球化學分析等工作基礎上,指出地處低地溫梯度背景區的平莊盆地地溫梯度異常是由於盆地基底隆起和坳陷引起傳導型大地熱流再分配所致;運用州sys數值模擬了大地熱流向地表傳導背景下的盆地地溫場,從而揭示了盆地基底(義縣組)頂界面地溫分佈特徵;闡明了盆地具有形成中低溫對流型地熱系統所必需的導水斷裂、補給水源等的良好條件,中低溫對流型地熱系統是地熱勘查的主要對象;圈定了平莊盆地北部朝陽溝?駱駝營子地熱勘查遠景區。The water onflow can be made by the direction changing and rib like spirals guide, it can strength the ability of heat absorption
水在特殊結構內的改向和模肋式螺旋導向促成水的湍流,加大了吸收熱量的能力。The results indicate that : the high positioned air inflow do good to heat transfer in rotator disk ; different size of radial outflow have small effects on flow and heat transfer ; the heat transfer near rotating disk increases as rotating reynold number increases or non - dimensional mass flow rate increases
結果表明,高位軸向進氣對轉盤換熱有利;不同的徑向出口大小對盤腔內的流動換熱影響不大;隨旋轉雷諾數和無量綱質量流量增加,轉盤盤面的換熱效果增強。By comparing the results with relative experiment data, it is shown that rng k - is more exactly than the other turbulent model. 2 ) the influences of axial inflow position, radial outflow size, rotating reynold number, non - dimensional mass flowrate and axial inflow angle on the flow and heat transfer characteristics were numerically investigated for a typical rotator - stator cavity with axial inflow, radial inflow and radial outflow. the correlations for average nusselt number vs rotating reynold number or non - dimensional mass flowrate were established
( 2 )針對一典型的徑向、軸向進氣,徑向出氣的轉-靜盤腔結構,系統研究軸向進氣位置、徑向出口大小、旋轉雷諾數、無量綱質量流量和軸向垂直預旋進氣等對盤腔內流動和換熱的影響,整理出轉-靜盤腔內轉盤平均努謝爾數與旋轉雷諾數無量綱質量流量之間的準則關聯式。4 ) in a pre - swirl rotator - stator cavities with discrete pre - swirl nozzles and blade - cooling entry holes, the influences of pre - swirl angle and flow parameter on the flow and heat transfer characteristics were numerically investigated. the correlation for average nusselt number vs rotating reynold number or non - dimensional mass flowrate were established. the results show that : advantage of per - swirl inflow is the effect of cooling the blade - cooling entry holes ; pre - swirl inflow increases heat transfer in rotating disk of pre - swirl chamber ; as pre - swirl angle increases, local nusselt number decreases in pre - swirl chamber ; the temperature of stator of inner rotator - stator chamber and per - swirl chamber decreases as rotating reynold number increases ; when the axial mass flowrate maintains constant, heat transfer in the rotating disk of inner rotator - stator cavities does n ' t change as per - swirl mass flowrate increases, while heat transfer in the rotating disk of per - swirl chamber increases ; when the pre - swirl mass flowrate maintains constant, change of the axial mass flowrate has effect on the whole cavity
結果表明,預旋進氣的優點在於增強了葉片冷卻孔附近的對流換熱效果,局部努謝爾數隨預旋角的增大而有所減小;隨旋轉雷諾數的增加,不論是內轉靜腔室還是預旋腔室的靜盤上的溫度都不同程度的降低:當軸向中心進氣質量流量不變時,隨預旋進氣的質量流量增加,內轉靜腔室的轉盤盤面上的換熱基本沒有變化,而預旋腔室的轉盤盤面上的換熱效果增強;當預旋進氣質量流量不變時,軸向中心進氣的質量流量的改變對整個盤腔都有影響。Present thermal bridge influence area to the building out exterior - protected construction. for the construction column thermal bridge, the influence area increase 100mm along the thermal bridge. the position of maximum heat - flux is between the thermal bridge and the outer wall
給出了熱橋對建築外圍護結構的影響區域,對于構造柱熱橋其影響范圍為熱橋邊沿向外100mm ,熱流量最大的位置在於熱橋與外墻交界處。According to a series of experimental data, the effect of following factors on the temperature in the ultra - low temperature box and cop are analyzed : the mixture composition, the pressure ratio and the return fluid extraction ratio of the rectifying column, the refrigeration capacity and the flow rate through throttle valve
並根據一系列實驗結果,分析了工質配比、循環壓比及精餾柱迴流液的抽取率、加熱量和節流元件對低溫箱內溫度和系統cop的影響,為今後的進一步研究指明了方向。Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed
本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上,以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型,通過攝動方法和有限體積法,首次對各種截面(圓截面、橢圓截面、環形截面、矩形截面)旋轉曲線管道內充分發展流動的流動結構和傳熱特性(包括耦合對流傳熱特性)以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析,詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響,獲得了若干創新性成果。Using the electric frequency permeameter can compliment the penetration and absorbance of the la zephire breast abundance essence liquid, and help the unique lz natural plant active factors to release their effects
電頻滲透儀可促進美胸精華液的滲透和吸收,使獨有的lz天然植物活性因子向乳房脂肪細胞層層釋放,傳遞熱量,微電流加熱真皮層來促進膠原蛋白和彈性組織的生成The analysis of the large - scale synoptic situation shows that strong precipitation is closely related to the explosion of monsoon and the intensification of cross - equatorial flow which bring a lot of vapor and meet with cold masses at the eastern of northwest district on 8th, june causing extremely heavy rainfall ; that subtropical high - level jet at 200hpa, subtropical high at 500hpa and low - level jet at 850hpa are the weather backgrounds favorable to strong precipitation ; that the pattern of eastern highs and western lows and the establishment of a low - level jet and the coupling between upper - and low - level patterns that determine that the rain occurred in the east of the northwest china ( on average, this is the rainy season for the south of china, but not for the northwest china ) ; that water vapor comes from southerly and easterly flow which converge at the eastern of northwest district with convergence mainly in lower levels and pbl ; that the high value of the whole - level apparent heat source < q1 > is near the area of large rainfall in the direction of northeasterly - southwesterly agreeable to shear line very well and the condensation latent heat releasing is main heat source with vertical advection item playing key role in q1 and q2 ; that there is a vertical secondary circulation crossing low - lever jet whose ascending branch is at the area of large rainfall ; that the construction of convection instability and conditional symmetry instability results that there is not only deep thermal instability, but also moisture influx and triggering mechanism of thermal instability causing strong torrential rain
作為對比,本文還對2002年6月24 - 25日發生在北京地區的強地形雨進行了分析,並討論陜南、北京地區兩地暴雨的異同點以及地形作用的共性和個性,為兩地暴雨預報提供有益的參考,得出了一些很有意義的結果: 1大尺度環流背景分析表明: ( 1 ) 「 02 . 6 」強降水與6月上旬越赤道氣流和季風爆發密切相關,攜帶大量水汽的偏南氣流與冷空氣於6月8日交匯在西北地區東部,導致了這次強降水的發生; ( 2 ) 200hpa的副熱帶西風急流、 500hpa副高以及850hpa的低空急流的配置非常有利於本文分析之陜西強降水的發展與維持。大尺度形勢分析表明,東高西低形勢場、低空急流的建立和高低空形勢的配置決定了這場降雨出現在西北地區東部。與暴雨區相聯系,存在一支橫越低空急流的經向垂直環流,暴雨區處于該垂直環流的上升支; ( 3 )偏南和偏東氣流水汽通道在西北地區東部交匯,水汽的輻合積聚主要在對流層低層和行星邊界層內完成; ( 4 )整層的視熱源< q _ 1 >高值區在暴雨區附近呈東北-西南向分佈,與切變線走向非常一致,降水產生的凝結潛熱釋放是強降水區大氣的主要熱源。Because the size of population flowing is expanded constantly and the family mobility day by day obviously, the educational problem of the teenagers of the right age that flowing into city, become one of focus problems which society pay close attention to at present
由於流動人口數量不斷擴大且家庭化趨向日益明顯,流動適齡兒童少年的教育問題,特別是隨父母流入城市的廣大民工子女如何接受義務教育,逐漸成為當前社會關注的一個熱點問題。With the different tripping annulus at the inlet, a new method of the distance definition from the wall was used to measure 35 mean velocity profiles on seven sections in the pipe length x / d = 125. 2
採用新的離壁距離標定方法,在入口處設有改變擾動強度擋環的條件下,利用熱線儀在管長x d約為125的范圍內完成了七個不同管流截面上的35個軸線方向速度分佈的測量工作。Of the currently available coolers for electronic products with a high heat flux, microchannel heat sinks have been proved to be able to provide the best heat transfer performance and are one of the most promising coolers. the manifold microchannel ( mmc ) heat sink has many advantages such as low thermal resistance, compact structure, little amount of coolant, low flow rate, uniform temperature distribution along the flow direction and many others, so it is able to provide the best heat transfer performance : lowering the maxmal temperature and the temperature difference
在目前高熱通量電子產品冷卻器中,微通道熱沉已被證實是傳熱性能最佳且最具應用潛力的冷卻方式之一,而歧管式微通道熱沉因具有低熱阻、結構緊湊、所需冷卻液量小、沿流動方向溫度分佈均勻等優點則成為減小電子元器件換熱表面最高溫度、降低溫度變化的一種有效方法。Nothing can be cooler than 0k. the gas below the photosphere has a higher temperature and so will rise up to the photosphere. after releasing its energy, the gas will become cooler and darker
光球層之下的氣體溫度比光球層高,就好像沸騰的水,底層的氣體會向上升,當這些熾熱氣體把能量釋放后,便會變冷變暗,然後沉降回光球層之下,這種對流運動產生了稱為Streaming from the hot end to the cold end of the regenerator was found which would waste much useful heating energy. modified structure of the jet pump could control this sort of streaming efficiently
實驗中還觀察到了直流現象,氣體從回熱器熱端向冷端運動,造成大量的能量浪費,通過改進噴射泵結構可以有效抑制直流。In fluent, the flow field of the tube wall, center, top, middle and bottom of the evacuated solar collector tube can be observed, the temperature - time curve and radial temperature gradient can be obtained, the heat loss of different part can be directly captured. 3. all kinds of effect factors of the flow field and temperature field have been analyzed
通過fluent計算,清楚地觀察到太陽能真空集熱管壁面和中心部分,頂部、中部和底部在各種工況下的流場分佈均不相同;得出了各種工況下的溫度-時間變化曲線,沿軸線方向的溫度梯度;同時還計算了各部分熱損的傳熱流量; 3分享友人