euler equations 中文意思是什麼
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Euler equations of hydrokinetics
歐拉鈴運動方程 -
The chimera embedding technique is presented for the external store separation configuration. it divides the whole region into many subdomains. euler equations are used for every subregion with the finite volume method
本文採用嵌套網格技術，將飛機投放外掛物的模型分成多個計運算元域，對飛機投放外掛物的復雜外形進行了分區迭代求解。 -
In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy
本文研究了高階精度加權基本無振蕩（ weno ）格式及其在雙曲守恆律方程中的應用，在此基礎上作了兩個方面的工作：一是針對高頻聲波問題構造出一種基於保色散關系（ drp ）的weno有限差分格式，並對計算氣動聲學（ caa ）問題的代表性算例進行了大量數值實驗，比較了該格式捕捉波數的能力；另外，針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題，研究了利用界面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法，並且給出有代表性的密度滑移面問題的算例，得到一致高階精度的數值模擬結果。 -
4. a 2 - d and 3 - d euler equations and n - s equations are solved using the cell - centered finite volume method and four - step runge - kutta scheme on the cartesian grids with standard convergence acceleration techniques such as local time stepping, enthalpy and implicit residual smoothing
使用jameson中心有限體積法和runge - kutta時間推進方法，求解了關於二維、三維復雜流場的euler 、 navier - stokes方程，採用了當地時間步長、隱式殘值光順等多種加速收斂方法。 -
In this paper, by use of the idea of constructing of high accurate eno ( essentially non - oscillatory ) schemes applied successfully in the simulation of euler equations, a new kind of high accurate finite volume schemes have been constructed in lagrangian coordination. combining with the eno interpolation, two kinds of conservative remapping algorithms have been developed for arbitrary mesh systems
本文採用已經在euler方程求解中得到成功運用的高精度eno （ essentiallynon - oscillatory ）有限體積格式的構造思想，構造了lagrange坐標系下高精度有限體積格式，結合eno插值自適應選取插值點的特性，提出了兩類適用於任意網格的守恆重映方法。 -
In this work, we detailedly introduced the whole ideas of rkdg finite element method and the theory of constructing gas - kinetic schemes based on boltzmann equation. and then presented a kind of new computational method for solving id and 2d compressible euler equations, i. e. firstly, we discretize euler equations in the space with discontinuous galerkin finite element method ; secondly, we discretize temporal variable t with runge - kutta formula ; thirdly, for numerical fluxes constructing, we give two kinds of different numerical fluxes - kfvs and bgk numerical fluxes by using gas - kinetic schemes
本文分別對rkdg有限元方法的整個思想和基於boltzmann方程的分子動力學格式的構造思想給予了詳細的介紹，並分別結合rkdg有限元方法與kfvs數值通量和bgk數值通量的構造方法，給出了一種求解一維、二維可壓縮流體力學方程組新的計算方法，即，我們先用間斷有限元方法進行空間離散，然後再對所得到的半離散格式使用runge - kuttatvd方法進行時間離散，得到全離散格式。 -
Because euler equations have disconnected solutions named shock wave in numerical simulation flow field, and to make sure the disconnected solutions not expanding or vanishing among parallel computation sub - domains, there must be certain connections in the numerical value variable among the sub - domains
由於在歐拉方程數值模擬求解流場區域內存在間斷解即激波，而計算流體力學并行數值計算是在分區的基礎上進行的，為了使流場區域內的間斷解不因分區并行計算而膨脹或消失，分區之間的數值變量必然存在著一定的聯系。 -
The preliminary results obtained by solving n - s equations show - viscous effects clearly. in addition, based on euler equations the effects of point distribution, cloud structure and weight selection on computational results have been analyzed, which results in having a convenient technique of point distribution in the computational domain and a rule of point selection forming an appropriate. clouds of points used in the computation
此外，論文結合無粘euler方程的求解，對無網格演算法涉及的計算域內點的分佈、當地點雲結構及空間導數逼近的加權因子等問題對計算結果的影響進行了分析和比較，完善了方便的區域離散布點方法，明確了點雲生成選點準則。 -
The three - dimensional ( 3d ) euler equations are applied to the study of numerical simulation of chemical non - equilibrium oblique detonation wave standing on an accelerating projectile with attack angle
摘要採用三維非定常化學反應控制方程組對駐定在帶攻角高速飛行彈丸上的斜爆轟波流場進行了數值模擬。 -
The numerical examples presented here are representative test cases of the aerodynamics problems which contains shock and complicated flow structures. the solutions of euler equations for these examples certify the advantages of eno schemes
文中選取了具有代表性的算例，通過求解euler方程來驗證eno格式在處理包含激波和復雜流動結構的空氣動力學問題中所具有的優點。 -
With introduction of pseudo compressibility, two - dimensional euler equations are derived. referring to compressible method, central finite volume scheme is employed to develop a computational code
參照可壓縮流動計算的中心格式有限體積法完成了擬壓縮方法二維定常不可壓euler方程的推導和流動計算程序的編寫。 -
Only clouds of points instead of grids are distributed over the computational domain and the spatial derivatives are estimated using a least - square curve fit on local clouds of points. the paper gives discrete form for euler equations on base of gridless method, and adopts five steps runge - kutta scheme for time - marching. the numerical results have been obtained for the 2 - d flows over airfoils or multi - element airfoils using the method presented
本文首先對無粘euler方程進行無網格離散，並運用顯式runge - kutta格式推進求解，成功地數值模擬了二維單段和多段翼型的繞流；在此成功的基礎上通過在euler方程的右端加入粘性項，使求解方程變為層流navier ? stokes方程，得到了翼型繞流，數值結果顯示出粘性的影響。 -
The present thesis solves euler equations with quick parallel computing methods on grids. based on schwarz parallel algorithms, collectivity flow field numerical value solver can be gained via evaluating interface boundary cells by passing information
本文的主要目的是并行快速求解歐拉方程數值解，是以schwarz并行演算法為理論依據，通過信息傳遞對內邊界單元賦值，以得到總體流場的數值解。 -
The cell - centred finite volume algorithm, nnd finite volume algorithm and ausm + finite volume algorithm are studied for solving the euler equations, their abilities for hypersonic problem are studied especially
本文分別對格心有限體積格式、 nnd有限體積格式和ausm +有限體積格式進行了研究，在求解euler方程的基礎上，研究了它們對跨音速以及高超聲速流場計算問題的解決能力。 -
The numerical solution of euler equations is provided as flowsolver
翼型的流場解由歐拉方程的數值解提供。 -
In chapter 5, we first recall some results of the existence and regularity about the minimizers. secondly, we study the euler equations about the variationals and the approximate problems about the minimizers
第五章我們先闡述關于能量極小映射的相關結果；其次研究能量極小映射的euler方程；之後建立用調和函數逼近能量極小映射之結論。 -
2. the 3 - d unsteady euler equations are derived. and the computational program based on these equations is developed to adapt for the calculations of flapping wing
2 、推導了非定常情況下的三維歐拉方程，發展了三維非定常歐拉方程計算程序，使之適應于撲動翼計算的需要。 -
In chapter two, sph is comment ed synoptically, its fundamentals is reviewed, and sph formulae of euler equations are derived. in chapter five, several fundamental problems occurring in sph implementation are discussed detailedly, e. g
文中第二章在概括性地予以評述之後，系統地介紹了sph方法的基本原理，推導出歐拉方程的sph形式。 -
We generated its grid surface on the fuselage or missile body according to the geometry projection relation between aerodynamic components and the bilinear interpolation approach. finally, we successfully developed a new algebra grid generation technique in virtue of the improved four - boundary interpolation. in this thesis, we put emphasis on the researches of aerodynamic inverse design and drag reduction questions for airfoil and wing using euler equations and control theory proposed by jameson
（ 2 ）進行了應用控制理論和二維歐拉方程的翼型氣動反設計，以及有升力約束情形下翼型跨音速減阻問題研究，分別推導了相應的共軛方程及邊界條件的數學形式，並給出了相應的梯度求解公式形式，研究發展了共軛方程及梯度的數值求解方法，成功進行了多個翼型的反設計和減阻問題研究。 -
In this thesis, finite volume method and dual - time stepping method are employed to solve the 3 - d unsteady euler equations. the unsteady flow field around a finite - span flapping wing is simulated. the lift and thrust of the flapping wing for different cases are calculated
本文運用有限體積法結合雙時間推進技術求解三維非定常歐拉方程，模擬了有限翼展機翼在同時具有上下拍動和俯仰運動狀態下的非定常流場，計算了不同狀態下撲翼的升力及推力，分析了各個影響因素對撲翼氣動特性的影響。
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