壁面函數法 的英文怎麼說

中文拼音 [bìmiànhánshǔfǎ]
壁面函數法 英文
wall-function method
  • 壁 : 名詞1 （墻） wall （of a house etc ） : 銅墻鐵壁 bastion of iron2 （作用像圍墻的部分） wall of st...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 壁面 : wandung
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. In the last part, an experiential formula for nondimensional thermal stratification height is obtained, which includes inlet temperature t, inlet velocity v, heat transfer of the wall body q and the distance of heat source l. in order to obtain a more realistic result, the ? model is used to simulate the airflow and the buoyancy item is treated by boussinesq hypothesis. the paper investigates the flow field of the displacement ventilation in an office by a numerical method

    兩方程湍流模型為基礎的壁面函數處理方法，對熱浮升力項採用了boussinesq假設，得到了收斂的溫度場、速度場分佈。在此基礎上，給出了熱力分層高度的計算方法，並分析了送風溫度、送風速度、圍護結構傳熱和熱源分佈等因素對熱力分層高度的影響。
  2. In this paper, the standard three - dimensional k - two - equation turbulence model which modifies the item of buoyant effect and simple algorithm are adopted, wall functions are used to deal with the boundary condition and a simplified method - box method is used to model the supply air boundary condition

    本文數值計算採用經過浮升力項修正的k -兩方程模型和simple演算法，壁面邊界條件採用標準壁面函數，風口邊界條件採用盒子方法。廠房內的氣流運動主要受風口出流動量的制約，因此選擇合理描述入流邊界條件的風口模型對數值模擬至關重要。
  3. In this article, simulations of air distribution in the vav air - conditioned office are carried out in the cases of different air - supplying diffusers including slot diffuser, sqaure grille, bar grille and square diffuser to supply air, the standard three - dimensional k - ? two - equation turbulence model with correctional item of buoyancy effect and simple algorithm are adopted, and wall function method is used to handle boundary conditions

    本文採用經過浮升力項修正的-兩方程模型和simple演算法，應用壁面函數法處理邊界條件，對利用包括條縫風口、方型百葉風口、長條型百葉風口和方型散流器不同型式送風口送風的變風量空調房間內的氣流組織進行了模擬。
  4. 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。
  5. Numerical simulation on the three - dimensional turbulence flow in the pick - up tube is based on reynolds time - average navier - stokes equations. the k - turbulence - closed model is used in this paper. in the near wall area the standard wall function is used

    對集流管的三維粘性紊流模擬計算是建立在雷諾平均的navier - stokes方程的基礎上，紊流封閉模型採用目前工程上應用比較廣泛的模型，在靠近固壁區採用了標準的壁面函數法。
  6. In this paper i was in virtue of the fluent software, set up the geometrical model of jin ’ ao mansion and adjacent buildings, used non - equilibrium wall functions to deal with the problem which come from the near wall, used realizable k - turbulent model to simulate the steady flow around 3d high - rise buildings, we can get the distribution of mean wind pressure coefficient of the surface of jin ’ ao mansion and five aerodynamics components. they were compared with the data from the wind tunnel test, we found out the distance between the result of the wind tunnel test and numerical simulation in the acceptable range

    本文以fluent軟體為平臺，建立金奧大廈及其周邊建築的計算幾何模型，近壁區採用非平衡壁面函數法處理，運用基於雷諾時均的realizablek -湍流模型進行高層建築三維定常風場數值模擬，獲得金奧大廈表面時均風壓系數分佈及基底五分量氣動力，並和風洞測壓試驗的結果及風壓系數積分計算的基底五分量氣動力相比較，發現兩者之間的差異在可接受的范圍之內。
  7. Effect of wall function in numerical study on turbulent impinging jet

    紊流沖擊射流數學研究中的壁面函數法
  8. In consideration of limitations of load transfer method, which cannot take into account its non - axisymmetrical cross - section, the approximate three - dimensional method is proposed based on elastic theory method which was proposed by poulos ( 1968 ). the proposed method can consider its non - axisymmetrical cross - section

    考慮到荷載傳遞函數法的缺陷，即不能考慮壁板樁樁身橫截面的非軸對稱性，本文又以poulos （ 1968 ）提出的彈性理論法為基礎，推導出了壁板樁承載特性的近似三維解答。
  9. The material ways are to model the honeycomb wall as an impredence surface, to express the infinite honeycomb by using periodic green ' s function, and using method of moment to establish the mathematic model, in applying the methods of moments, we choose the roof function as basic function and choose the razor function as test function ; by equating the incident field to sum of the scattering field and impledance field ; we will set up the integral equation for the surface current, solving it by mom equation. then gain it ' s reflected coefficient ' s numerical result. and we propose first the definition of the equivalent electromagnetic parameters and present a method to calculate them from the gained reflection coefficient

    具體方法就是將浸漬吸收劑的蜂窩壁用表面阻抗表示，將無限大的周期結構的電場用周期格林函數來表示，選取有耗蜂窩結構中具有代表性的基本計算單元應用矩量法建立數學模型，在運用矩量法時用屋頂函數作為基函數，刀片函數作為檢驗函數，根據蜂窩壁表面電場必須滿足入射電場等於散射電場和阻抗電場之和的規律，推導表面電場積分方程，求解蜂窩結構的表面電流，利用蜂窩的周期規律得到無限大均勻周期陣列的散射電場。
  10. Abstract : after the concept of the acoustic transfer has been explained, a method on the basis of the test results to solve the acoustic transfer is presented, that is to slove the system of linear equations about the acoustic transfers based on measurement of frequency response between exciting force and velocity, exciting force and the point pressure in cavities

    文摘:闡述了低頻腔體聲場的聲傳遞函數的概念，提出了一種實驗求解聲傳遞函數的方法，即在腔體壁面各測點的力與速度、腔內關鍵位置力與聲壓之間頻響函數測量的基礎上，求解聲傳遞函數的線性方程組。
  11. Using the two - equation mode and law of the wall to enclose the equations and avoiding the laminar sublayer, accelerating the solution. 5

    對計算模型進行了詳細的闡述，採用雙方程模型和壁面函數法使n - s方程封閉並避開粘性支層，加快求解速度； 5
  12. In the case of computation of invariant flow in the flume, the boundary conditions on bottom and wall of the flumes are managed specially according to the view of wall function method, and the formula about u * is deduced according to the hydraulic characteristic of invariant flow in the flume

    在實驗水槽恆定流的計算中，根據壁面函數法的基本原理，對槽底及壁面的邊界條件做了相關的專門處理；並根據實驗水槽恆定流的水力特性，導出了摩阻流速計算公式。
  13. A numerical study has been carried out to predict mass flow rate, temperature field and velocity field for different models and configurations of solar chimney under steady - state conditions, k - e turbulence models and wall function methods were used

    本文使用-湍流模型結合壁面函數法，對穩態條件下，不同模型、不同結構尺寸的太陽能煙囪的通風量、溫度場和速度場進行預測。
  14. According to the flow patterns and calculation characteristics for three models, different k - s turbulence models and wall function methods were used

    同時，針對三種太陽能煙囪模型的流動和計算特點，選用了不同種類的-湍流模型和壁面函數法進行數值計算。
  15. In this thesis, by use of k - mmodel and wall function approach the turbulent gas flows in the cfb was simulated. the influence of the secondary air on it was investigated by the compare of the numerical simulation results, and the academic clew was supplied for the further study of numerical simulation

    本文運用k -模型、壁面函數法對簡化后的循環流化床實驗臺內氣相冷態流場進行了數值模擬，比較得出了二次風對床內氣相流場的影響情況，為進一步模擬實驗研究給出了理論提示。
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