混合對流 的英文怎麼說
中文拼音 [húngěduìliú]
混合對流
英文
mixed convection- 混 : 混形容詞1. (渾濁) muddy; turbid2. (糊塗; 不明事理) foolish; stupid
- 合 : 合量詞(容量單位) ge, a unit of dry measure for grain (=1 decilitre)
- 對 : Ⅰ動詞1 (回答) answer; reply 2 (對待; 對付) treat; cope with; counter 3 (朝; 向; 面對) be tr...
- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 混合 : (攙雜在一起) mix; blend; mingle; admix; mixture; mix up; interfusion; commixture; blending; cre...
-
Abstract : apply computer simulation to the distribution pattern of air - flow without considering the cold condition of the combustion and compare the flow patterns under different designed circumstances. and the effect of the design of the partition in the air way of the burner on the flow and mixture of gas and air is especially studied. the result shows that the design of partition plays a very important role in strengthening the mixture of gas and air, but increases the loss of the resistance in the air way and the total pressure of the air way in same working conditions needs increasing
文摘:應用計算機模擬的方法,在不考慮燃燒的冷態情況下,研究了熱風爐燃燒室內的氣流分佈規律.在此基礎上,比較了2種不同設計方案的氣流流動特徵,尤其是研究了燃燒器空氣通道內阻流板的設置與否對空氣和煤氣的流動和混合的影響.結果表明,阻流板的設計對加強空氣和煤氣的混合有著極為重要的作用,同時也增加了空氣管道的阻力損失,在同樣的工況條件下需要提高管道系統的總壓力For the first category, we consider the boundary flow as an annular zone completely isolated from mixing with the main flow environment.
對于第一個范疇,我們把邊界看作是完全隔離的環形區域,並不與主流環境相混合。According to the system technology require, adopting singlechip realize open loop digital control of hdclsm ; using v / f conversion and complex key - control method realize digital setting of system parameter, such as velocity ; using micro - stepping control insure the motor running more smoothly ; adopting debasing speed control method to eliminate the mechanical impact of distance termination effectively ; at the same time, analyzing main power circuits drive circuit and protect circuit of system, completing hardware design and facture and software programming and debugging ; at last, making a whole test in hybrid rotary step motor. the experiment result indicates that this control system reaches the qualities required and run smoothly also
根據系統技術要求,採用單片機實現了混合式直流直線步進電動機的開環數字控制;利用v f變換和復合鍵控方法實現了系統轉速等參數的數字設定;利用細分控制技術保證了電機運行的平穩性,並進行了波形分析和理論研究;採用單片機軟體降速控制策略解決直線步進電機行程末端的機械沖擊問題;同時對主功率電路、驅動電路和系統保護電路進行了分析,完成了硬體設計、製作和軟體編程、調試,最後在混合式旋轉步進電動機上進行了全面測試。With the rapid development of economy in china, vehicle volume is increasing heavily. therefore, the consequent traffic problems of traffic congestion, traffic accidents and environment pollution become a headache of city managers. intersection as the hinge of city traffic system, vehicles, pedestrians and bicycles join together in the intersection
本文依託國家自然科學基金重點項目《城市路網動態交通管理與控制關鍵理論及其模擬技術研究》和國家自然科學基金項目《混合交通中的機非沖突機理與基本參數研究》 ,對平面交叉口轉彎車流交通組織優化方法進行了研究。The thesis is devoted to exploiting a permanent magnet synchronous machine ( pmsm ) for the parallel hybrid electric vehicle ( phev ). three parts are included as follows : at first, in the electromotor state, the current control strategies of pmsm are determined. giving the elementary method for solving the contradiction between enhancing the pmsm ' s flux - weakening capability in the electromotor state and reducing the pmsm ' s connatural adjustment ratio in the dynamotor state
本課題的研究工作主要圍繞開發一臺並聯式混合動力電動汽車( phev )用永磁同步電機( pmsm )展開,所作的工作主要包括以下幾個部分:首先,確立了phev用pmsm電動機運行狀態時的電流控制策略,針對pmsm在電動機運行狀態時提高弱磁擴速能力和在發電機運行狀態時減小固有電壓調整率的相互矛盾,提出了初步的解決方法。Considering the overtaking flow, this paper built the continuum equation of mixed traffic flow, set up the kinematics differential equation by means of differential calculus
摘要引入超車換道流量,建立了混合交通流的連續性方程;通過對交通流參數的微分變換,建立了混合交通流的運動微分方程。As we know, inverse techniques make blade ' s profile well compatible with its surface velocity distribution, however, they give designers big challenges that the ideal velocity distribution is hard to obtained and sometimes the non - physical solution, such as double covering of flow field or unclosed profiles, would come out. the proposed design procedure in the paper has avoided the disadvantage mentioned above. in this paper, a quasi - irrotational equation is used to describe the flow in cascade instead of the generally used irrotational equation
眾所周知,一般的反問題和混合問題的最大特點,是在給定的壓力面和吸力面上的壓力分佈或速度分佈條件下,直接得到葉片的幾何形狀,它可以使葉型型面與表面氣流參數有機結起來;其不足之處在於,對設計者而言,很難給定理想的葉片表面壓力分佈或速度分佈,並且有時會得到一個非物理解,如:得出的初始葉型可能會出現前緣、尾緣不封閉的現象。A one - dimensional oceanic mixed layer model with the m - y level - 2. 5 turbulence closure schemes is employed. the rate of energy loss by breaking waves is estimated by parameterization and incorporated into the model as a source of turbulence kinetic energy ( tke ) by modifying the existing surface boundary condition of tke equation. the velocity field and turbulence energy budget are calculated under different forcing conditions ( the results given below are for a wind speed of 20 m / s. )
採用一維2 . 5階湍封閉混合層模式,根據參數化方法對波浪破碎導致的能量耗散率進行了估計,通過改變湍動能方程的上邊界條件引入波浪破碎對湍動能生成的影響,計算了不同風應力強迫下的混合層流場結構和湍能量收支(下述給出的結果是取風速為20m s得到的) 。So the department of traffic needs a software platform for developing chinese its. however, our urban traffic network has own mix characteristic, which comprises motor vehicles, non - motor vehicles, and foot passengers. the mixed characteristic differs from other countries which nearly comprise motor vehicles
然而,由於我國城市交通網路是以機動車、非機動車與行人混合的交通流為特色,不同於國外發達國家以機動車為絕對主流的道路交通基礎,故進口的國外軟體不能完全適用於國內的交通流狀況。Because the realistic traffic of our country is mixed, it is nearly not impossible to simulate it. but with freeway, the work is comparatively easy. because freeway is closed completely, as we simulate, wo can eliminate the disturb of the unmechanized vehicles and foot passengers
對於我國現實生活中的交通而言是屬于混合交通,要完全真實的模擬出來尤其是難上加難,但是對于高速公路來說卻相對要容易一些,因為在高速公路上是全封閉的,也就排除了非機動車和行人的干擾,我們可以在模擬的時候只是關注于機動車的交通流特性。Fv mc hybrid algorithm for axisymmetric bluff body stabilised turbulent flows
混合演算法求解軸對稱鈍體后湍流流場On the other hand, it is indicated that the velocity field consists of a depth - independent inertial oscillation and a time - mean shear flow, which can be obtained by subtracting the inertial oscillations time mean in one inertial period. the hodograph of the velocity vector of time - mean flow at the different depths consists of a ekman spiral, and the surface velocity is 30. 3 ? to the right of the wind
一維模式的流場結果表明,混合層中的流場是由慣性波動與時間平均流兩部分疊加而成,且通過時間平均消去慣性波動后得到平均流,其不同深度的流速矢量構成一ekman螺旋,表層流速矢量相對風向右偏了30 . 3 』 。Under high air pressure, a critical problem for the normal discharge is whether enough pre - ionization can be achieved in the laser media or not. however, the cycling pumping oil steam emerging during the flow of the gas mixture and the vapor infiltrating from outside have a strong absorption of the infrared light or a role of counteracting the excitation
在高氣壓條件下能否正常放電,關鍵問題是主電極間的激光介質能否獲得足夠的預電離;而混合氣流動過程中出現的循環泵油蒸汽,及從外界滲透的水蒸汽等都對紅外光有相當強的吸收作用或消激發作用。The equal density and pressure of free streams are chosen to study the effect of compressibility on the mixing layer
計算選取來流密度和壓力相等,對流馬赫數從0 . 2到1 . 2 ,以研究壓縮性對混合層流動的影響。To protect the multimedia data, a mixed encryption algorithm together with two advanced cryptography - des ( data encryption standard ) and blowfish based on fingerprint watermark is studied. in this algorithm, the fingerprint data of people is embedded into the encrypted data
為了對多媒體數據進行保護,研究了一種基於指紋水印數據的混合加密方案。該加密方案中混合了流行的保密性較高的des ( dataencryptionstandard )演算法和blowfish演算法。For fluids with high viscosities such as polymers, effective mixing is not achievable by turbulent flow and laminar flow is the only method for mixing of fluids with high viscosities
對于聚合物這樣的高粘物系,不可能產生湍流來產生高效混合,層流混合是高粘流體唯一可能的混合方式。Mixing : for various kinds of fluidizable materials, such as powder, granules, micro - granule etc. because of multi - dimensional movement ( horizontal, tangent and radial direction ), the mixing effect is very good
混合:對于可以流化的物料,如粉末、顆粒、微丸等都可在本設備中得到均勻混合,由於空氣的立體運動(水平、射線和切線方向) ,混合效果非常優越。Abstract : optimum distances between primary nozzle exit and mixing tube inlet, static pressure recovery of the mixing flow in mixing tube 、 total pressure distributions at the exit of mixing tube 、 pumping coefficients and total pressure losses of the exhaust ejector systems with four different types of primary nozzles have been measured in the experiments
文摘:對4種主噴管組成的排氣引射系統的引射系數和總壓損失、各主噴管出口與混合管進口之間的最佳間距、混合氣流在混合管內的靜壓恢復及混合氣流在混合管出口處的總壓分佈等進行了測量和對比。Internal waves are a kind of bridge relating the diapycnal mechanical mixing to external sources of mechanical energy : first, internal waves are driven by wind stress and barotropic tide so that large amount of mechanical energy are transported to abyssal ocean with propagation of internal waves ; second, the mechanical energy can directly be cascaded to mixing through instability and breaking of internal waves
內波是外界提供的機械能與混合之間聯系的橋梁之一,一方面風和潮汐通過激發內波,將能量向深海和大洋內區傳遞,另一方面,內波的不穩定和破碎直接將機械能串級到小尺度湍流混合中去。開展傾斜地形上內波的傳播以及內潮的產生等方面的研究對海洋混合過程的參數化以及混合對大洋環流的影響等方面的研究具有重要的科學意義。A two - dimensional double diffusive laminar mixed convection, displacement ventilation, is fully investigated by the means of heat and contaminant transport structures to see the effects of the heat and pollutant sources and the external mechanical ventilation
作者以二維層流雙擴散混合對流模型? ?置換通風? ?進行了數值模擬與分析,並利用上述對流可視化技術來觀察熱源、污染源、外部機械通風三個因素對室內空氣環境的影響。分享友人