粘性計 的英文怎麼說
中文拼音 [niánxìngjì]
粘性計
英文
tackmeter-
A 3 - d viscosity turbulence model is used to analyze the unsteady around flow field of the thrust - vectoring engine of the jet vane, and results of the area including vane base, vane flake and motor shell are presented
摘要以推力矢量發動機的燃氣舵為研究對象,採用三維、粘性、湍流流動模型和數值分析的接觸網格技術,在定常流動計算的基礎上,對包含舵基、舵片和發動機殼體的區域進行詳細數值分析。Standard test method for the apparent viscosity of roofing bitumens using the parallel plate plastometer
使用平行板塑性計測試屋頂層瀝青表觀粘度The effect of reynolds number on rudder hydrodynamic performance is also analyzed. up to the stall angle the computed lift and drag agree well with measurements and other author ' s calculations, whereas stall angle, lift and drag beyond the stall angle are slightly under - predicted. the solver is used to investigate laminar and turbulent separated flows around a 6 : 1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces
應用所開發的求解器,以naca0015翼型舵為算例計算了船舵在不同雷諾武漢理三;大學博士學位論文數下大舵角范圍內的三維粘性流場及水動力,成功地預報了舵的失速角和最大升力,並初步探討了雷諾數對舵水動力的影響;計算結果與現有試驗和計算數據比較,吻合程度相當好,初步檢驗和驗證了該求解器精確模擬粘性流動和計算水動力的能力。Method for measurement of thixotropy behavior with a rotational viscometer of ceramics slurry
用旋轉粘度計測量陶瓷漿的觸變性的方法Computation of transonic viscous flow of a projectile
彈丸跨聲速粘性繞流數值計算Considering the characters of the viscoidal turbulent flow over high - speed train, the computing model of the outer fiow field for high - speed train has been established based on the incompressible fluid navier - stokes epuation and the turbulent model of ke two equations. the equation set of the flow field problem via finite element methods ( fem ) has been set up
根據高速列車粘性紊態繞流的特點,在較少簡化的條件下以navier - stokes方程和-兩方程紊流模型為基礎,建立了高速列車外流場的計算模型,在近壁區域採用壁面函數修正紊流模型。During the process of measuring compression ratio, the viscous fluid instead of burning gas is applied to measure the maximal volume. residual volume and working volume of the engine combustion cylinder respectively
在壓縮比測量裝置中,採用粘性液體,代替發動機工作燃氣,分別測量出發動機燃燒工作室的最大容積、余隙容積和工作容積,方便地計算出發動機的壓縮比。Artificial nerve network forecasted yso in clay p - y curves is researched and 8 physical parameters are studied by using the principal component analysis method when the fracture load was not reached for a trial pile under lateral load, the ultimate load of the pile might be predicted to the field - surveyed load settlement data of existing trial pile and by h - s curve extension method and hyperbola method
在對粘性土p - y曲線計算參數y _ ( 50 )的研究中,對粘性土常規8個物理性質指標進行主成分分析,研究用人工神經網路分析預測粘土p - y曲線中的y _ ( 50 ) 。建立了神經網路計算模型,可用來計算預測粘性土p - y曲線中的y _ ( 50 ) 。On the base of the numerical simulation of unsteady viscous flows, the characters of the static aeroelastics and flutter for the wings are researched. some examples, simulating the steady and unsteady transonic ( and subsonic ) viscous flows around onera m6 wing, are given in this paper
以oneram6機翼為算例,分別對其亞、跨音速定常及非定常粘性繞流狀態進行了數值模擬,並運用b - l和j - k兩種湍流模型計算結果和實驗數據進行了對比。A parallel computing software is established independently. this software is a cell - centered finite - volume, structured grid, multi - block code which solves the equations governing inviscid and viscous flow of a calorically perfect gas or of an arbitrary mixture of thermally perfect gas undergoing non - equilibrium chemical reactions
通過簡單的參數控制,該程序既可計算二維、軸又巾彌和三維量熱完全氣體,也可計算化判卜平衡流;既可計算無粘流,也可計算粘性流。Based on testing results and soil theory, the modified mechanism of the nanometer silica fume in the clay is proposed : water molecule adsorption action, cementation action and filling action. combining the sem tests, the microstructure features of the cemented soil of nanometer silica fume are concluded
設計了三組室內試驗,分別探討了納米硅粉對粘性土物理力學性能的影響;結合試驗結果和土質學基本理論,提出從水分子吸附作用、膠結作用、填充作用三個方面探討納米硅粉與粘性土之間的作用機理。Abstract : on the basis of general principles of mechanics and critical state soil mechanics theory, a theoretical formula determining the coefficient of earth pressure at rest for cohesionless soil is derived by means of combining hypoplasticity with critical state soil mechanics. the formula has a simple form and is only related to the effective angle of internal friction of soil. there is a slight difference between the calculated value of the formula and that of other formulae. the further investigation of the formula shows that it can be used to determine the coefficient of earth pressure at rest of cohesionless soil
文摘:在滿足一般力學原理和臨界狀態土力學理論的基礎上,本文將亞塑性理論與臨界狀態土力學相結合,推出了一個計算無粘性土靜止土壓力系數的理論公式.該公式形式簡單,僅與土的有效內摩擦角有關,其計算結果與常見的多個經驗公式的計算結果只有微小的差別.文中討論結果表明,該公式可用於確定無粘性土的靜止土壓力系數In modern aircraft design, there is an urgent requirement for accurate, efficient and easy - use aerodynamic data and computational analysis tools. however, the euler codes are not satisfied all the demand for simulating the complex flow - fields. more powerful tools solving navier - stokes ( n - s ) equations are longed for viscous effect, more accurate and more detail information of flow - fields
現代飛機設計迫切需要計算流體力學為其提供準確、高效和實用的氣動數據以及流場分析工具,已經不再滿足於僅採用euler方程進行數值模擬,它要求數值求解navier - stokes ( n - s )方程組以模擬粘性效應,提供更加準確而詳實的流場信息。The relationships of modal damping versus the stiffness of cables, the attachment height of damper and damping constant are obtained. with the optimal structural control method, a new approach to determine the optimal damping constant of viscous damper is presented. the first a few modal damping can be optimized simultaneously under the optimal damping constant of damper, which is more convenient than the existed design method
4 、對拉索-粘性阻尼器系統的動力特性進行了研究,得到了拉索剛度、阻尼器安裝高度及阻尼系數等參數對拉索系統模態阻尼比的影響規律;根據最優控制原理,提出了一種確定阻尼器優化阻尼系數的方法,該方法確定的阻尼系數能保摘要證前幾階模態阻尼比得到整體優化,改進了現有的設計方法。When calculating the damping coefficient of the section with the semi - submerged bow, the viscous effects are considered
在計算帶有半潛首剖面的阻尼系數時,考慮到粘性的影響。The results show that, comparing with the gas pressure drops calculated by the modified ergun equation, in the cases of the gas reynolds number is small, due to the presence of the dead space, the observed p in the experiments are bigger than that obtained by calculation, and when the gas reynolds number is large, because of the small interfacial viscous drag - force between gas and liquid, the p observed are smaller than that obtained by calculation
結果表明在氣相雷諾數較小時,由於停滯孔隙率的存在,實測壓降值比修正厄根方程計算的值大;氣相雷諾數較大時,氣液界面上產生的粘性曳力較小,實測壓降值比修正厄根方程計算的值小。On the basis of theoretic analysis and numeric calculation, the author verifies that only is the ratio of the fundamental period of the structure to the disturbance period beyond 1. 4, it ' s possible to achieve reductions in both the relative displacement and the absolute acceleration responses
作者在此基礎上,從理論分析和數值計算兩方面證明了粘性變阻尼控制僅在結構周期與激勵主周期的比值大於1 4時才有可能同時減小結構的位移反應峰值和加速度反應峰值。Standard test method for determining inherent viscosity of poly ethylene terephthalate by glass capillary viscometer
用玻璃毛細管粘度計測定聚對苯二甲酸乙二酯特性粘度的標準試驗方法4. based on the viscous hydrodynamics, the leakage characteristics of newton liquid that is transmitted by helical gear pump are researched for the aim of the least power loss, and the leakage model is founded, the mathematic models of the radial and the axial leakage are gained. at the same time the optimal radial leakage and axial leakage are got, and the numerical calculation is achieved
基於粘性流體力學,以功率損失最小為目標,首次對牛頓流體在斜齒齒輪泵中的漏流特性進行了研究,建立了泄漏模型,分別得到了斜齒齒輪泵的徑向和軸向泄漏的數學計算模型;同時得到了斜齒齒輪泵最佳徑向間隙和最佳軸向間隙,並在此基礎上進行了數值計算。Finally, in the third section, by constructing some functional which similar to the conservation law of evolution equation and the technical estimates, we prove that in the inviscid limit the solution of generalized derivative ginzburg - landau equation ( ggl equation ) converges to the solution of derivative nonlinear schrodinger equation correspondently in one - dimension ; the existence of global smooth solution for a class of generalized derivative ginzburg - landau equation are proved in two - dimension, in some special case, we prove that the solution of ggl equation converges to the weak solution of derivative nonlinear schrodinger equation ; in general case, by using some integral identities of solution for generalized ginzburg - landau equations with inhomogeneous boundary condition and the estimates for the l ~ ( 2 ) norm on boundary of normal derivative and h ~ ( 1 ) ' norm of solution, we prove the existence of global weak solution of the inhomogeneous boundary value problem for generalized ginzburg - landau equations
第三部分:在一維情形,我們考慮了一類帶導數項的ginzburg ? landau方程,通過構造一些類似於發展方程守恆律的泛函及巧妙的積分估計,證明了當粘性系數趨于零時, ginzburg ? landau方程的解逼近相應的帶導數項的schr ( ? ) dinger方程的解,並給出了最優收斂速度估計;在二維情形,我們證明了一類帶導數項的廣義ginzburg ? landau方程整體光滑解的存在性,以及在某種特殊情形下, gl方程的解趨近於相應的帶導數項的schr ( ? ) dinger方程的弱解;在一般情形下,我們討論了一類ginzburg ? landau方程的非齊次邊值問題,通過幾個積分恆等式,同時估計解的h ~ 1模及法向導數在邊界上的模,證明了整體弱解的存在性。分享友人