熱梯度能 的英文怎麼說
中文拼音 [rètīdùnéng]
熱梯度能
英文
thermal gradient energy-
The obtained polysilane - polyacrylate gradient films showed no macro - interface with the silicone content reducing gradually from the top surface to the bottom one. dma thermograms indicated that polysilane - polyacrylate gradient films contained two glass temperatures with their bands drifting from and their range extending much from each component. the good properties of waterproof, calorifics, and ultraviolet - absorption were also determined by dsc, uv and water contact angle measurements
結果表明:有機硅聚合物-聚丙烯酸酯梯度膜有一個較寬的玻璃化轉變溫區,玻璃化轉變范圍相對組分材料的玻璃化轉變范圍發生了擴展:有機硅聚合物-聚甲基丙烯酸酯梯度膜具有較好的熱學性能;硅含量的提高有利於改善膜層的憎水性能和紫外吸收性能。Research on the design of combine harvester model 4l
2熱障梯度塗層的抗熱震性能研究Also the theoretical basis of the method have been checked through simple deducing simulation and the influences of various physical parameters on the method have been studied. it is shown that the method is theoretically reliable for the production oil wells without very high production rate and is more suitable in field production for oil wells ( i ) in area with bigger geothermal gradient ; ( ii ) producing fluids ( oil and water ) with distinguish thermal characteristics ; ( iii ) producing oil with lower heat capacity or water with higher heat capacity ; ( iv ) with good surface measurement accuracy, as well as the method h as certain requirements on the accuracy of the temperature and flowmeter logs sensors
就該產出剖面方法的理論基礎進行了簡單的正演模擬和可能影響該方法的各項物理參數進行了全面的考察,結果表明,該方法對于非高產的生產油井來說在理論上是可靠的,在實際生產中適合於( 1 ) 、油井所在地區地溫梯度較大的油井; ( 2 ) 、油水熱特性差別較大的油井; ( 3 ) 、油比熱容值偏低水比熱容值偏高的油井; ( 4 ) 、井口計量精度較高的油井,並且對井溫測井和流量測井的傳感性精度有一定的要求。Xanthophyli cycle has been widely concerned since the finding that it has the function in heat dissipation. with the trans - thylakoid ph gradient, zeaxanthin ( z ) together with antheraxanthin ( a ) can absorb excess energy from chlorophyll and release it as heat, thus protect the photosynthetic apparatus from photodamage by high light. violaxathin de - epoxidase ( vde ) is the key enzyme in xanthophylls cycle
目前普遍認為葉黃素循環的色素定位於天線色素蛋白復合體上,在跨膜質子梯度( ph )形成后,玉米黃質( z )和環氧玉米黃質( a )能夠從葉綠素中吸收過多的激發能,並以熱能的形式耗散到體外,從而保護光合器官免受強光的破壞。Abstract : this paper studies the structure, function and realization of ceramic / metal gradient thermal barrier coatings dynamic design software by combining the conceptions of thermal barrier coatings ( tbcs ) and functional gradient materials ( fgms ). through a typical example, it compares and analyses the simulation results of temperature field in the multiplayer gradient cylinder model calculated by analytical method, finite difference method and finite element method
文摘:結合熱障塗層和功能梯度材料的概念,研究陶瓷/金屬梯度熱障塗層動態設計軟體的結構與功能及其實現過程.通過具體的例子,對多層圓筒模型的溫度場的解析解、差分解及有限元解的模擬結果進行了比較及分析The conclusions obtained as follows : firstly, the structure ' s free frequency is decreased by the reduction of the mechanical property of the material with the increasing temperature ; secondly the thermal stress produced by the temperature gradient may decrease or enlarge the structures natural frequency ; thirdly, the variety of natural frequency of the alloy structures effected by the heat effect apparently higher than that of the composite material structures
最後,採用ansys程序分析了合金材料、復合材料的板、彈體結構的熱振動特性。在不同的熱載條件下,取得以下結論:升溫導致的材料機械性能下降都會降低結構固有頻率,而溫度梯度產生的熱應力可能降低也可能提高結構的固有頻率;金屬材料結構的固有頻率受溫度的影響要比復合材料結構的固有頻率受溫度的影響要明顯。Dropwise condensation heat transfer coefficient on the horizontal circular surface with radial gradient surface energy
圓形徑向梯度表面能材料表面的凝結換熱系數By means of c - language, the paper has developed a large - scale computer program, in which the combination of both the newton iteration and the gradient method is introduced to solve reynolds equation and film thickness equation, and the march method is used to solve the energy equation and heat interface equations, the satisfactory results are obtained
本文採用c語言編制了大型計算機程序進行數值計算,數值計算中採用梯度-牛頓聯合法求解reynolds方程和油膜厚度方程,採用步進法求解能量方程和熱界面方程,獲得了滿意的數值結果。There are many advantages to heat by air condition system, but there are also many problems. the air distribution of air condition room is often designed according to the summer outdoor parameters. thus, in winter, the hot air will arise with the influence of buoyancy, which result in the decline of vertical temperature gradient and produce a successive of problems
空調送風供暖有著很多的優點,但也出現了很多問題,由於空調房間的氣流組織一般是以夏季工況為設計工況,在冬季由於送風熱氣流在浮升力作用下上升,引起垂直溫度梯度的增加,並產生一系列的問題,致使空調房間冬季室內熱舒適性較差、能源利用效率較低。The saffman force does not affect the axial velocity of the flow, while it change the concentration of the particle. the gas - particle two - phase flows in the present of temperature were also numerical simulation
討論了絕熱、有溫差和添加熱泳力三種情況下的兩相流場,分析了溫度梯度、湍動能、軸向速度和顆粒濃度的變化。Progress in study of ceramic metal functional gradients thermal barrier materials
金屬功能梯度熱障材料研究進展On thermal buckling of a simply supported rectangular fgm plate
四邊簡支功能梯度矩形板的熱屈曲分析Microstructural change and thermal shock performance of metal / ceramic graded thermal barrier coatings in thermal shock experiments were studied by scanning electron microscope and energy - dispersive spectrometry. the results showed : 1 ) metal microstructure kept intact while ceramic microstructure had been destroyed ; 2 ) thermal shock performance of coatings was interrelated with its function to relax residual stresses, therefore thermal shock performance of gradient thermal barrier coatings was better than that of terraced thermal barrier coatings ; 3 ) thermal shock performance was concerned with metal content in metal / ceramic thermal barrier coatings, which would be improved when metal content was increased
利用掃描電子顯微鏡和能譜成分分析技術研究了金屬/陶瓷梯度熱障塗層在熱震過程中的顯微組織變化及其抗熱震性能.結果表明: 1 )金屬顯微組織保持完好,陶瓷顯微組織有明顯的破壞; 2 )塗層抗熱震性能與其熱應力緩和功能密切相關,梯度熱障塗層比階梯熱障塗層具有更高的抗熱震性能; 3 )金屬/陶瓷熱障塗層抗熱震性能與其中金屬相含量有關,金屬相含量增加可改善塗層抗熱震性能The transition zone quite often shows a decrease in temperature gradient due to the ability of water to absorb up to a 1 / 3 more heat than rock
由於水具有比巖石能多吸收三分之一熱量的能力,因此,這類有變化的地層通常都顯示出地溫梯度下降的趨勢。Based on the results of previous researchers, the following instigations have been carried out in this paper : ( 1 ) employing a reasonable local resonance model which can accurately embody the heat - generation behavior due to resonance and vibration - heat mode in delaminated region, the dynamic response and temperature distribution in the small delamination region of a laminated beam are formulated. influence of the excitation frequency on the temperature gradient formation is analyzed numerically, and several meaningful conclusions are drawn. ( 2 ) for laminated plates with delaminations, due to complexity of the analytical solution, the finite element method is employed to analyze their temperature distributions and satisfactory results are also obtained
本文在前人研究的基礎上,對此方法進行了進一步的探討,主要做了以下的工作: ( 1 )選取合理的、能夠準確反映由共振而產生熱量的行為的局部響應模型,以及合理的振動熱模式,推導了一維層合梁小脫層區域的振動響應及梁的溫度分佈,並編製程序計算了該層合梁在激勵一段時間后的溫度分佈趨勢,分析了激勵頻率對溫度梯度形成的影響,得到了一些有意義的結論; ( 2 )對於二維層合板,由於解析解的形式異常復雜,本文採用有限元計算軟體對其溫度分佈進行了分析,也得到了較為滿意的結果。Research on the thermal shock resistance of functionally gradient coating by plasma spray
等離子噴塗功能梯度塗層抗熱震性研究Firstly, this paper describes the optimization problem of thermal stress of fabrication process and steady work process for the hollow cylinder and the infinite plate. then, thermal stress distribution is calculated making use of theoretical formulation and the results can be validated by finite element method. in optimization, the restriction condition is heat insulation performance and the objective function is danger coefficient
本文首先對平板結構和圓筒結構梯度塗層在制備過程和穩定工作狀態下的熱應力優化設計問題進行描述,然後分別用解析法求解兩種結構的梯度塗層在制備過程和穩定工作狀態下的熱應力分佈,並採用有限元方法驗證了熱應力分佈的結果,在優化設計時,以危險系數為目標函數,以塗層的隔熱性能為約束條件進行設計。The introduction of functionally graded materials in the research course of thermoelectrics can greatly improve the optimal temperature range of thermoelectric materials and conversion efficiency of a thermoelectric device
在熱電材料研究的過程中,梯度材料概念的引入可以使熱電材料的性能與使用溫度得到最佳匹配,同時,可望使熱電系統的轉換效率得到大幅度提高。The results of the analysis indicate that the mechanical behavior of composite steel - frames in fire conditions is dominated by the effects of thermal loading, thermal expansion and thermal gradient
得出了鋼結構高溫條件下熱載荷、熱膨脹、熱梯度對整體結構機械性能具有顯著影響的結論。( 2 ) on the basis of continuity equation, momentum conservation equation, energy conservation equation, and substantial equation, coupled thm governing equations are derivated with giving up the assumption of local thermal equilibrium, adopting thermal elasto - plastic constitutive relation, taking the effect of temperature gradient on groundwater seepage ( analogous to soret diffusion ) and the effect of viscous dissipation of groundwater on temperature field of rock mass into account
( 2 )根據連續性方程、線動量平衡方程和能量守恆方程以及相應的物性方程推導了飽和巖體溫度場-滲流場-變形場三場耦合作用控制方程組。在推導控制方程組時舍棄了「局部熱平衡」假設,採用了熱彈塑性本構關系,考慮了溫度梯度對地下水滲流的影響(類soret效應)以及地下水的粘性耗散對巖體溫度場的影響。分享友人