riemann method 中文意思是什麼
riemann method
解釋
黎曼方法-
And finally, with hllc and lax - friedrichs type approximate riemann solver for discretising conservative equations and a nonconservative equation, a simple accurate and fully eulerian numerical method is presented. compared with the numerical results of hll scheme, the hllc scheme has a high resolution for shock waves and avoiding the nonphysical oscillation of the hll scheme
最後用lax ? friedrichs格式及hllc格式作為通量函數對守恆一維euler型方程組進行了離散，並將數值模擬結果和saurel的hll格式模擬結果進行了比較，發現：在兩相流數值模擬過程中，相對來說hllc格式對激波的解析度最高，結果最穩定，避免了hll格式在間斷處的非物理性數值振蕩。 -
A new analytical method for the plane elastic or thermoelastic problem on complex multiply connected region based upon the complex potential theory of elastic mechanics built by muskhelishvili. n. i. by combining the theory of sectionally holomorphic function, cauchy model integral, the analysis of the singularity of complex function and riemann boundary problem, the analysis relation between the complex potentials is obtained, and then the problem is transformed into solving an elementary complex potentials equation
I彈性力學復勢理論的基礎上提出一種處理復雜多連通域平面彈性與熱彈性問題新的分析方法，將復變函數的分區全純函數理論，復勢奇性分析， riemann邊值問題與cauchy型積分相結合，求得各分區復勢的解析關系，將問題歸結為一個初等復勢函數方程的求解。 -
The two - dimensional flow - pollutant riemann approximate solvers model has been analyzed and applied to treat the calculation of the mass and momentum fluxes by finite volume method based on some recent results on hydro - dynamic model of shallow water
本文從淺水動力學模型研究現狀和發展趨勢出發並結合水環境規劃管理的實際需要，分析研究了二維水流水質黎曼近似解模型。 -
5. by applying our recurrence method of decreasing order, we obtain the close formulas of convoluted summations for generalized fibonacci - lucas numbers, euler numbers and genocchi numbers etc. furthermore, we obtain the computed formulae of the higher - order cumulants for a class of the lattice animal and some identities for riemann zeta functions and beta functions. 6
建立降階遞歸法，並用這種方法得到廣義fibonacci - lucas數、 euler數、 genocchi數等的多重卷積求和的封閉公式，進而得到了若干riemannzeta函數與beta函數的恆等式以及一類latticeanimals的高階累積量的計算公式。 -
Two - order enhanced un - split finite volume euler method for multi - fluid flow, which combines the roe approximate riemann solver, is developed to simulate the multi - fluid interactions, such as the fluid described by polynomial eos, stiffen gas eos, jones - wilkins - lee ( jwl ) gaseous explosive eos, cochran - chan ( cc ) solid explosive eos and hom shock wave eos, etc. numerical results of the id, 2d and 3d multi - fluid interaction examples show that the high - resolution method and interface capturing equations can resolve the multi - fluid flow correctly and successfully. a simple fluid - mixture type ppm algorithm for multi - fluid flow, which is based on vof interface capturing method and resolved by langange / remap two steps, is developed to simulate the high density or high pressure ratio flow at both sides of the interface
本文提出了實用於多介質流體的增強型二階精度有限體積歐拉數值計算方法，採用roe方法近似求解riemann問題，可以適用於多項式狀態方程、 「 stiffengas 」狀態方程、 jones - wilkins - lee爆轟產物狀態方程、 cochran - chan固體炸藥狀態方程以及hom狀態方程等，並對多介質流體相互作用的一維、二維、三維問題進行數值計算，數值驗證了本文給出的高精度差分格式和界面捕捉方法的正確性，兩種方法耦合形成的多介質流體數值計算方法是成功的。
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