緊差分格式 的英文怎麼說
中文拼音 [jǐnchāfēngéshì]
緊差分格式
英文
compact difference scheme- 緊 : Ⅰ形容詞1 (物體受到幾方面的拉力或壓力以後呈現的緊張狀態) taut; tight 2 (物體受外力作用變得固定...
- 差 : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
- 分 : 分Ⅰ名詞1. (成分) component 2. (職責和權利的限度) what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] (料想) judge
- 格 : 格象聲詞rattle; gurgle
- 式 : 名詞1 (樣式) type; style 2 (格式) pattern; form 3 (儀式; 典禮) ceremony; ritual 4 (自然科...
- 格式 : form; layout; pattern; format; mode; style
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A compact alternate direct implicit difference method for the reaction diffusion equations
反應擴散方程的緊交替方向差分格式The fourth - order compact difference schemes with high resolution are applied to discretize the space derivatives, and a low - storage fourth - order explicit runge - kutta scheme is used in time marching
文中採用具有高解析度的4階精度的緊致差分格式離散空間導數,同時,時間步進採用低存儲量要求的4階顯式runge - kutta格式。Numerical fluxes considered in the explicit portion of the algorithm were evaluated by an implicit high - order compact scheme to augment stability. meanwhile, an implicit high - order compact numerical filter was used
顯式一邊的空間導數採用具有較高精度和良好數值穩定性的隱式高階緊致差分格式,同時採用適于低馬赫數流動計算的隱式高階數值過濾方法。The above spatial and temporal discretization in the boundary, and two - directional average in the intersection, can satisfy completely n - s equations, and have high accuracy in the all computational regions
對邊界上的空間微分採用高階緊致差分格式離散,時間微分採用四階時間推進處理,在交界處採用雙向差分平均法,保證了整個計算域上的流動都滿足navier - stokes方程,並具有高階精度。The fourth - order explicit upwind - biased compact difference schemes are used in the spatial discretization of the nonlinear convection terms. these difference schemes can be used in all computational region including the boundary neighborhood, and can overcome the difficulty not adapting simultaneously in the boundary neighborhood for general three - dimensional fourth - order central difference schemes, and improve computational stability a nd resolution. the compact difference equations with high accuracy and resolution for solving the incompressible n - s equations and perturbation equations are composed of these compact difference schemes, and provides an effective numerical method for the investigations of the turbulent spots and coherent structures
文中發展了四階時間分裂法用於navier - stokes方程及其擾動方程的時間離散;對分裂得出的關于壓力的poisson方程和關于速度的helmholtz方程,建立三維耦合四階緊致迎風差分格式;這些格式適用於包括鄰近邊界點在內的計算區域,克服了三維各自用四階中心差分格式離散不適用於邊界鄰域的困難,並提高了穩定性和解析度,用這些格式分別組成了數值求解navier - stokes方程及其擾動方程的高精度、高解析度的緊致差分方程組,為湍斑及湍流相干結構的研究提供了有效的數值方法。分享友人