顆粒平均速度 的英文怎麼說

中文拼音 [kēlìpíngjūnsùdù]
顆粒平均速度 英文
mean grain velocity
  • 粒 : Ⅰ名 （小圓珠形或小碎塊形物） small particles; grain; granule; pellet Ⅱ量詞（用於粒狀物）
  • 平 : Ⅰ形容詞1 （沒有高低凹凸 不頃斜） flat; level; even; smooth 2 （高度相同; 不相上下） on the same l...
  • 均 : Ⅰ形容詞（均勻） equal; even Ⅱ副詞（都; 全） without exception; all
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 顆粒 : 1 （小而圓的東西） pellet; bead; dust; anything small and roundish （as a bean pearl etc ）2 （一...
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. In the bed load layer, the stream - wise particle velocity profile follows the log - law, and the average is 8. 2u *

    在推移區內，顆粒的縱向速度沿垂線接近對數分佈，平均運動速度為8
  2. The distribution of stream - wise particle velocity follows the log - law under various flow conditions and for different particle diameters, and the fluctuation of the other two velocity components is random

    對不同的粒徑和不同的水流條件，顆粒縱向平均速度都符合對數分佈規律，垂向和橫向的平均速度屬于隨機波動的范圍。
  3. This text completely and systematically studies the status and the development of the pyrolysis and the fluidization of biomass, which distill the bio - oil in the domestic and international area, as well as the existing problems. this thesis primarily include following aspects : ( l ), by experimenting and measuring the energy ( heat value ) and the content of c, h, n chemical element of right 20 kinds of common biomass, on the base of the experimental result, and respectively established the biomass energy predict experiment formula with the element of h and c is from change, and passed the ro. os examination, which provides the basis and convenience for flash pyrolysis fluidization device energy to convert the rate to compute with biomass energy utilization calculation ; ( 2 ), proceeded the tg and dtg experimentation equal velocity ( 10 ? / min, 20 ? / min, 40 ? / min, 60 ? / min ) heating and constant temperature heating by studying on eight kinds of biomass samples, according to the experimental data and arrhenius formula, we established the dynamics model of pyrolysis of, then, using the goast - redfern and p function, we also solved the dynamics parameters and analyze out every kind of biomass ' s frequency factor and parameters of activation energy, and established the every kind of dynamics model of pyrolysis of biomass, all of these provide the theories and basis to make sure the reactor ' s flash pyrolysis work temperature scope design and the describing of pyrolysis reactor dynamics ; ( 3 ), in order to study and ascertain the process of heat completely getting to pyrolysis time of varied size biomass particles, we observed and measured the ratio of length and diameter ( l / d ) with the varied biomass through electron microscope, we concluded the l / d ratios usually is from 5. 0 to 6. 0, the average is 5. 3 ; ( 4 ), we studied the process of biomass transiting and the theory of complete pyrolysis time with the theory of complicated heat field, we got the time ( t ) of the varied size biomass particles arriving to complete pyrolysis, and we knew that the complete pyrolysis time and the time which get to the biggest production ratio are identical, all of these studies provide the theory base for design and forecasting the flash pyrolysis reactor solid state resort time ; ( 5 ), according to the above experiment result, synthesize to make use of the engineering the mechanics, engineering the material, machine the design to learn the principle, deduce, establish the theory of rotation cone flash pyrolysis reactor material resort time ( t ) and reasonable rotation velocity ( or frequency ) relation theory ; and ( 6 ), we gave the reactor ' s smallest cone angle certain, reactor cone wall strength design theory, the reactor production ability theory, the power design method and the critical rotation velocity theory

    本文較全面、系統地綜述了國內外生物質熱解液化制取生物燃油技術研究發展現狀及存在的問題，主要研究內容有： （ 1 ）實驗、測定了20種常見生物質的能量（發熱量）和c 、 h 、 n元素含量，根據實驗結果分別建立了以h和c為自變量的生物質能量預測經驗公式，並通過r _ （ 0 . 05 ）檢驗；為閃速熱解液化裝置能量轉化率計算和生物質能量利用率計算提供了依據和方便； （ 2 ）選擇了8種生物質試樣作了等加熱速率（ 10 min 、 20 min 、 40 min 、 60 min ）和恆溫加熱的tg和dtg實驗，根據實驗數據和阿倫尼烏斯公式建立了生物質熱解反應動力學微分方程，並採用goast - redfem積分法和p函數對其動力學參數進行了求解，解析出各種生物質的頻率因子和活化能參數，進而建立了各種生物質的熱解動力學模型，為科學確定反應器的閃速熱解工作溫度范圍及熱解反應動力學描述，提供了理論和依據； （ 3 ）為研究和確定不同尺度的生物質顆粒中心達到全熱解的時間，在體視顯微鏡下對不同粒度的生物質顆粒的長徑比進行了實驗觀察和測定，得出生物質的長徑比（ l d ）一般在5 . 0 6 . 0之間，平均為5 . 3的結果； （ 4 ）採用復雜溫度場傳熱學理論對生物質傳熱過程及充分熱解時間理論進行了研究，解析推導出了不同尺寸生物質顆粒中心溫度達到充分熱解溫度的時間（ t ） ，得出了理論推導的充分熱解時間與最大產油率的熱解時間相一致的結果，為閃速熱解反應器固相滯留時間設計和預測提供了理論依據； （ 5 ）根據上述實驗結果，綜合運用工程力學、工程材料、機械設計學原理，推導、建立了轉錐式閃速熱解反應器物料滯留時間（ ）與轉速（或頻率）合理匹配理論； （ 6 ）提出了轉錐式閃速熱解反應器的最小錐角設計、錐壁強度設計、生產能力設計理論和功率計算方法及臨界轉速理論等。
  4. 8 - 1. 2g / min, and collection efficiency achieve 8 - 10 % under these parameters. through the study on the dispersion process of the nanoparticle tio2 in water, the author finds out that whisk time, dispersant types, dispersant concentration, dispersing time, ph value, temperature and electrolyte concentration have significant influence on dispersing effects. through contrastive and orthogonal experiments, the author obtains that composite dispersants have better results than single dispersants

    研究表明，液料等離子噴塗制備的納米tio :顆粒平均粒徑為10 ~ 50nln ，其晶型以銳欽礦為主，且隨著電弧功率的增大，銳欽礦含量減少;在本次實驗工藝參數下，收集速率為0 . 8一1 . 29 / min ，收集效率為8一10 % o通過對納米ti02顆粒在水介質中的分散性研究，發現機械攪拌時間、分散劑種類及濃度、分散時間、 ph值、溶液溫度和電解質濃度對納米tio :顆粒的分散穩定性有很大的影響。
  5. Further, full - scale experiments were carried out and the results demonstrated that the up - flow filtration with coarse media was efficient in removal of suspended solid, backwash of cleaning, and long action cycle. an effluent turbidity of 1 ntu was always achieved with an average filtration rate of 20 m / h

    生產規模的運行實驗顯示粗石英砂濾料上向流過濾對懸浮顆粒的去除是有效的，反沖洗干凈徹底，過濾周期長，當平均濾速為20m h時，出水濁度為1ntu 。
  6. A solid - liquid fluidized bed has been designed and installed, which will be used in the heat exchanging and descale field. the experimental study for distributor design was carried out and the particles distribution in the tubes of the solid - liquid fluidized bed under different operating conditions was studied by using the ccd measure system. experimental results show that heterogeneous pores distributor which was arranged in the inlet chamber of the solid - liquid fluidized bed can improve the nonuniform distribution of particles in the pipe bundle under high flow rate. the nonuniform decreases by decreasing the mount of pore, but the solid holdup decreases too. the particles distribution is influenced by the position of the heterogeneous pores distributor

    實驗結果表明：在液固循環流化床進口段安裝可調節高度的變孔徑分佈板，能在較高的流速下，較好的改善固體顆粒在管束中的不均勻分佈；開孔率越小固體顆粒在管束中的分佈越均勻，但管束中粒子的平均固含率也越小；分佈板的安裝高度對顆粒的分佈有很大的影響，在實驗范圍內分佈板的安裝距離管束入口處越遠，顆粒在管束中的分佈越均勻。
  7. ( 2 ) starting off with analyzing the forces affected on single dry solid granule on the roller screen, the relative slippage and slipping condition of granule at the tangential direction and axis direction of roller screen are discussed, and the average slipping conveyance velocity from feeding end to discharging end is given. the throwing conveyance of granule is discussed, the throwing coefficient of roller screen and its varying rule, and the concept of average throwing coefficient and its computing method are put forward, the starting condition and terminating condition for throwing motion of granule on the roller screen and the throwing conveyance velocity of granule are researched. the influence on throwing motion of granule by the rotating velocity of roller screen is discussed as well

    （ 2 ）從筒式篩網上單顆干固相顆粒的受力分析著手，討論了顆粒在筒式篩網面上的切向相對滑動和軸向相對滑動及滑動條件，並導出了顆粒從進料端向出料端滑動運移平均速度；討論了顆粒的拋擲運移，給出了筒式篩網上的拋擲指數及其變化規律，提出了筒式篩網的平均拋擲指數的概念及計算方法，研究了筒式篩網上顆粒拋擲運移的產生條件和終止條件，以及顆粒拋擲運移的輸送速度；還討論了筒式篩網的旋轉角速度對顆粒拋擲運動產生的影響。
  8. In this thesis, the basic arithmetic of piv software - cross - correlation arithmetic is introduced in detail, during the data process, through processing the two sequential images by the cross - correlation arithmetic, the vector charts of particles velocity can be obtained, so is the chart of absolute velocity, with velocity decomposed into the radial velocity and axial velocity

    本文對試驗所獲得的連續圖像通過互相關演算法，獲得顆粒速度矢量圖，並將速度分解為徑向速度和軸向速度，對每一小區域內的顆粒按速度方向不同進行速度平均，獲得顆粒的平均速度分佈曲線。
  9. The quantitative relational expression is obtained about the coefficient of additional pressure loss and the froude number by experiment, and the relation is made clear between the average speed of waste plastics particles and the pressure loss of per unit length

    由實驗得出廢塑料輸送管內氣力輸送附加壓力損失系數與弗勞德準數的定量關系式，廢塑料顆粒平均速度與單位管長壓力損失的關系。
  10. The motion characteristics of the suspended particles were obtained by statistical analysis, including vertical concentration distribution, mean velocity profile, turbulent intensity, velocity correlation, and the probability density distribution of the velocity fluctuations. attempt has also been made to interpret the turbulent characteristics in terms of particle properties and turbulence structure

    對不同容重、不同粒徑的顆粒在不同水流條件下的垂線濃度分佈、平均速度和脈動強度分佈、相關函數及脈動速度的概率密度分佈等進行了全面系統的統計分析，得到的中文摘要主要成果如下：
  11. The influences of the inlet tube angle, backpressure and driving jet velocity on static pressure distribution in the gas - solid injector are calculated, and the effects of the inlet tube angle on particle bulk phase concentration and axial mean speed of particles in the gas - solid injector are analyzed firstly. the predicament caused by lack of measuring means on the particle velocity in experiments is solved

    分析了收縮角、背壓和氣體噴嘴出口速度對氣固噴射器內靜壓分佈的影響，以及收縮角對氣固噴射器內固體顆粒體積濃度場和顆粒平均速度的影響，解決了噴射器內固體顆粒速度試驗測試手段缺乏的困境。
  12. On the basis of research results of the existing experts and scholars especially the theory put forward by professor xu zhenliang ( my tutor ) that predicts the velocity profiles and friction loss of settling slurry when it flows in horizontal pipe and upward - inclined - pipe, relations among the velocity of water, that of solid particles and that of settling slurry have been established by the analysis of momentum transmission process between water and solid. then the calculation formulae for fricton loss of downward inclined and vertical pipe are deprived

    本文在現有專家學者的研究成果特別是許振良教授（導師）提出的預測非均質流在水平管道及向上傾斜管道流動時的速度分佈及摩阻損失的理論的基礎上，從動量守恆的角度建立了清水速度、固體顆粒速度和漿體速度之間的關系，進而推導出了向下傾斜及垂直管道沉降性漿體輸送的摩阻損失的計算公式。
  13. This thesis is aimed to study the flow field in circulating fluidized bed ( cfb ) holier in cold state based on the system of particle image velocimetry ( piv ), several parts are included : the distribution of particles velocity in cfb boiler including radial velocity and axial velocity of particles ; the average radial and axial concentration distribution of particles in cfb boiler ; the average radial and axial size distribution of particles in cfb boiler

    本文採用piv系統對循環流化床鍋爐冷態流場進行了試驗研究，研究的主要內容包括：循環流化床冷態流場粒子的速度分佈特性，包括粒子的徑向速度和軸向速度分佈；循環流化床顆粒的平均濃度沿徑向和軸向分佈特性；循環流化床顆粒平均粒徑的軸向和徑向分佈特性。
  14. Combining the data fusion technology with the cross - correlation technology for measuring velocity to measure the mean velocity of solid - phase particles in section, including the cross - correlation analysis of data from every sensor and that of data from all sensors after processed by fusion technology

    應用數據融合技術及互相關測速技術進行固相顆粒截面平均速度的檢測，包括單一傳感器數據的互相關分析，以及對所有傳感器的數據進行融合處理，再對其進行相關分析。
  15. Applied the above theory and the dem program trubal, the unilateral compress problems for the regular generated particles with an interstitial fluid are studied, and the macro - strain - stress curves varied with the fluid properties and the velocity of the wall are gotten. then, he unilateral compress problems for the random generated particles are numerically simulated, and the macro - strain - stress curves are obtained. moreover, the numerical simulation results for the dry and moist cases are compared

    利用上述理論以及demtrubal程序，研究了存在填隙流體時顆粒規則排列單向壓縮問題，得到了宏觀應力應變曲線隨流體性質、壁的運動速度等的變化規律；並對隨機排列單向壓縮問題進行了數值模擬，得到了宏觀應力應變平均曲線；並對干、濕兩種情況下顆粒的模擬結果進行了對比。
  16. The study shows that the substrate and other physical variables ( stream mean width, depth and velocity ) in changjiang river system from 1st to 6th order streams present a continuous gradient of physical conditions

    研充表明閶江河一至六級支流平均寬度、深度、流速及底質組成和顆粒大小等物理參數具有明顯的梯度變化。
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