熱動力分析 的英文怎麼說
中文拼音 [rèdònglìfēnxī]
熱動力分析
英文
thermodynamic analysis-
Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator. fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio - parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping
本文的主要內容如下: 1 )對翅片管蒸發器結構特點進行分析,選取適當的微元控制體,就干、濕和霜工況下對每個微元分別進行傳熱傳質分析,基於經驗關系式確定霜的有關參數,對于霜工況下的霜生長建立模型,經適當假設,運用質量守恆、能量守恆和動量守恆方程建立適合動態模擬的蒸發器數學模型,為系統模擬奠定基礎; 2 )對蒸發在大擾動下的開、停機過程,運用動態集中參數模型進行分析和計算,為更好地描述製冷系統運行的全過程奠定基礎,同時也為製冷系統實現自動控制提供一定的理論基礎; 3 )對蒸發器正常運行過程,運用動態分佈參數和參數間定量耦合的觀點來分析和計算,為更好地了解穩態工況下各點參數的變化情況及各入口參數對蒸發器動態特性的影響即蒸發器性能對各參數變化的敏感性; 4 )編寫翅片管蒸發器動態特性模擬計算程序,可以計算不同邊界條件和初始條件下的製冷劑熱力參數、空氣溫濕度和霜厚度分佈場,實現對翅片管蒸發器在干、濕和霜工況下的動態模擬。The variations of sea ice in the arctic ocean are simulated by using a improved high resolution hibler dynamic - thermodynamic sea ice model during 1979 - 1998. the model is driven by surface atmospheric and oceanic forcing consists of geostrophic winds, surface air temperature, specific humidity, and longwave and shortwave radiative fluxes provided by international arctic buoy program ( iabp ). the simulated results show that arctic sea ice have noticeable seasonal and annual variability
利用一個hibler海冰熱動力模式,在改進了其熱力部分和改變模擬范圍以及提高解析度的基礎上,以北極國際浮標計劃( iabp )提供的1979 - 1998年間逐日變化的日平均海平面氣溫場,濕度場,長短波輻射場,風場,洋流場,海洋熱流量場為強迫場,模擬了上述20年間北極海冰的時空演變。Finite element simulation of radial tire rolling on road
子午線輪胎直行和側滑滾動過程的熱力耦合動態分析Secondly, based on the syntony frequency and the elasticity mechanics and other correlative professional knowledge, establishes a suit of fsm vibration module system, selects the structure, material and the process and treatment technique of the elastic element in the elastic system of the mirror, analyzes a lot of factors which affect the structure of the rapid controlling reflector and provides the derivation formula
以諧振頻率為出發點,利用彈性力學等相關專業知識,建立一套fsm的振動模塊系統;確立了反射鏡彈性系統中彈性元件的結構、材料的選擇,及加工,熱處理。分析了影響快速控制反射鏡結構的諸多因素,給出其相關推導公式,最後應用solidedge和cosmos軟體對該結構進行了計算機模擬。Thermal decomposition of ferrous oxalate dihydrate was investigated using in situ x - ray diffraction ( xrd ) analysis and thermogravimetry in static self - generated air
摘要用原位xrd技術和熱重法分析了二水草酸亞鐵的熱分解過程,並進行了動力學研究。Air pressure drop and heat transfer performance for the automotive radiator
管帶式汽車散熱器流動阻力與傳熱性能分析The calculation result is compared with that of some experiments and other references, and it is satisfactory. the subroutines can be applied to the stress analysis of turbine disks in aeroengines
計算結果表明介面子程序具有在不同應變率條件下、應變率跳級拉伸條件下以及循環載荷條件下的模擬能力,程序正確、可靠,適于渦輪盤等發動機熱端部件的應力分析。Numerical prediction of aircraft hydraulic system based on thermal dynamic analysis
基於熱動力分析的飛機液壓系統數值預測Through the thermodynamic analysis for the sandstorm weather according to the simulated potential temperature, potential vorticity field, it is found that this sandstorm weather occurred in the condition of the atmospheric stratification stability, the area of the high potential temperature value and the potential temperature gradient have a good corresponding relationship with the surface cold air and cold front, so are the strength of potential vorticity and the different developing stage of sandstorm
利用輸出的位溫、位勢渦度場,對沙塵暴天氣進行熱動力條件分析,發現本次沙塵暴天氣發生在大氣層結穩定狀態下,位溫大值區及位溫梯度與地面暖低壓的強弱和移動有著很好的對應關系,位渦的水平分佈特徵和強弱變化對沙塵暴的出現時間和落區有一定的指示意義。Examinations of steady status and analysis of dynamic experiments have been conducted on band - tube evaporator and parallel - flow condenser using r134a refrigerant. the steady examination show that the model error was under the allowable error, the inlet mass and enthalpy disturb experiments indicate that the subsection model, be good at reflecting the change of parameters of the heat exchanger, accord with the basic principle of thermodynamics theory and the actual work status. hence, the subsection simulation model research has important benefits both on theory and engineering application
在進行模擬試驗時,以使用r134a作製冷劑的管帶式蒸發器和平行流式冷凝器為對象,完成了穩態模擬計算、試驗和動態模擬分析,穩態計算結果和試驗數據對比表明,其誤差在允許范圍內;進口質量和焓值的擾動試驗結果表明:本文所建的區段式換熱器模擬模型,能很好的反映換熱器性能參數的動態變化,與系統熱動力學理論和冷凝器、蒸發器的實際工作過程基本一致。The phase structure of different cu - fe thin films were studied by using grazing incidence x - ray analysis ( gixa ). the texture and residual stress of different cu - fe thin films were measured by scan of x - ray diffraction ( xrd ) and 2 scan with different. the thicknesses of different thin films were characterized by means of small angle x - ray scattering ( saxs ) technique. by using atomic force microscope ( afm ) measured surface roughness of thin films. the component of different thin film was characterized by energy disperse spectrum ( eds ) and x - ray fluorescence ( xrf ). the magnetic properties of cu - fe thin films were measured by means of vibrating sample magnetometer ( vsm ). in addition, the giant magnetoresistance ( gmr ) effects of different films were also measured. the original resistance of the film fabricated by a direction - current magnetron sputtering system is directly affected by bias voltage
利用掠入射x射線分析( gixa )技術對不同cu - fe薄膜的相結構進行了研究;利用xrd掃描及不同角度的2掃描對薄膜進行了結晶織構及殘余應力分析;運用小角x射線散射( saxs )技術測量了薄膜的厚度;採用原子力顯微鏡( afm )觀察了薄膜的表面形貌;運用能量損失譜( eds )及x射線熒光光譜( xrf )對薄膜進行了成分標定;使用振動樣品磁強計測量了不同cu - fe過飽和固溶體薄膜的磁性能;最後利用自製的磁阻性能測試設備測量了真空磁場熱處理前後不同薄膜的巨磁阻值。, magnitude of electric field, distance between poles, area of electric field, the influence to brake torque of conventional interface state and dimension and the like. its actual values has been tested by the heat balance calculations. the er
討論分析了電流變液的種類、電場的大小、電極間的距離及電場的面積(改變制動器的直徑及寬度) 、傳動系統界面狀態及尺寸等參數對制動力矩的影響,通過對制動器的熱平衡分析計算驗證其具有實用價值。In real engineering, the two surfaces in sliding contact are rough. and it is an important theoretical part to calculate the coupled temperature and stress of sliding bodies having rough surfaces
工程實際中,相互接觸的滑動摩擦表面是粗糙的,對粗糙表面的瞬時溫升和熱機械應力分析有重要的理論意義。In the paper, in accordance with the thermal power torpedo propulsion system using hap tri - component fuel, with the i - deas software, applying the cad technology and the fem, the research of simulation on the piston - one of key parts of engine was proceeded and the paper presented the whole analysis process of the piston including thermal analysis. in the paper, the question of the boundary condition in the complicated engineering was explored and the temperature field. the stress field and the deformation of the piston were computed and analyzed under a new kind of fuel ( hap )
本文針對三組元魚雷熱動力系統,應用i - deas軟體,利用cad技術和三維有限元方法( fem ) ,對發動機的關鍵零件? ?活塞展開模擬研究,對活塞進行了包括熱分析在內的全過程的模擬計算,探索了復雜工程中邊界條件的處理問題,分析計算了魚雷發動機活塞在新型燃料(三組元燃料)工作下的穩態溫度場、應力場與變形情況,最後,根據分析結果對其結構提出了改進意見。Thermal dynamical graphic analysis of a z type solid laser resonator
型固體激光腔熱動力圖解分析The finite element method ( fem ) has become an important means in modern engineering designs, which is used in many fields, such as structural stress analysis, deformational stiffness analysis, mechanic failure analysis, dynamic process analysis, heat analysis, electromagnetism filed analysis and so on
有限元素法已成為工程設計中不可或缺的重要技術手段,在大型結構作用力分析、變形分析、失效分析、動力學分析、傳熱分析、電磁場分析、流體流動分析等方面扮演著越來越重要的角色。The influence of fouling on the thermodynamic performance of shell heat exchanger and its design calculation is analyzed, and the choice of estimation method of fouling heat resistance and fluid flow mode is discussed
摘要分析了污垢對管殼式換熱器的熱動力性能及換熱器設計計算的影響,討論了污垢熱阻估算方法和流體流動方式的選擇。Firstly, the analyses on the dynamical response of the tsing ma bridge ( tmb ) under traffic loading are performed on the basis of the three dimensional finite element model of the full - scale structure of the bridge, and some regions critical to fatigue damage are determined from the result of the dynamical response. the hot spot stress approach is usually adopted in the fatigue design and analysis of tubular welded joints. to apply the hot spot stress approach for the fatigue evaluation of long - span suspension bridges, the fem is further used to determine the hot spot stress of the critical fatigue locations
首先,在青馬大橋三維有限元模型和整體動力響應分析計算的基礎上進一步進行關鍵疲勞構件的局部熱點應力分析,對疲勞危險部位處的焊接構件建立三維有限元模型,施加符合橋梁實際工況的載荷與位移邊界條件,進行局部熱點應力分析,確定這些焊接構件內的名義應力和相鄰焊接區域內熱點應力之間的關系,得到相應的應力集中系數。To reach this target, the work should employ not only the information technique, but also the thermodynamics theory. same thing applies to condenser and evaporator which affect directly the behavior of the refrigerant system as the main heat exchange equipments in the refrigerant system
為了實現這一目標,需要利用現代模擬技術和系統熱動力學,從系統的變工況性能出發,分析系統的過渡特性。對于汽車空調的主要換熱設備:冷凝器和蒸發器,這一問題尤為緊迫和突出,因為他們的工作狀態直接影響著整個製冷系統的各項性能。Using finite element analysis software carry on the stress analysis to the key component, to instruct structural design ; made the strict processing and the heat treatment to the feather key, to guarantee feather key stress and the movement request ; has made the strict design of lubrication and the seal to improvement feather key working condition
利用有限元分析軟體對關鍵部件進行了受力分析,指導結構設計;對關鍵部件導向鍵的加工和熱處理作了嚴格的制定,保證導向鍵的受力和運動要求;對該機的潤滑和密封作了嚴格的設計,改善導向鍵的工作條件。分享友人