tensor divergence theorem 张量发散定理 divergence of tensor 张量散度 divergence ( cy) 离向运动 divergence angle 扩张角 divergence field 辐散场 divergence loss 发散损失,扩散损失 divergence point 发散点,分歧点 flow divergence 气流扩散 surface divergence 表面散度 divergence stage 【医】 转换...
Divergence of a tensorGeneral theory of relativityField theoryIn the General Theory of Relativity, the expression of the Einstein tensor is deduced by requiring the tensor to fulfil three conditions, among which the value zero of its divergence. The proof of the value zero of the divergence, ...
Thedivergencefunction does not support tensor derivatives. If the inputVis a tensor field or a matrix rather than a vector, then thedivergencefunction returns an error. Symbolic Math Toolbox™ currently does not support thedotorcrossfunctions for symbolic matrix variables and functions of typesymma...
where the surface integral gives the value of integrated over a closed infinitesimal boundary surface surrounding a volume element , which is taken to size zero using a limiting process. The divergence of a vector field is therefore a scalar field. If , then the field is said to be a diverg...
We prove in this paper a divergence theorem for symmetric (0,2)-tensors on a semi-Riemannian manifold with boundary. We obtain a generalization of results obtained by Ünal in [9, Acta Appl. Math. 40(1995)] and E. García-Río and D. N. Kupeli in [4, Proceeding of the Third Wo...
volVectorField gradPa(fvc::grad(pa)); volTensorField gradUa(fvc::grad(Ua)); volVectorField gradHa(fvc::grad(ha)); volVectorField UaMatrixConvection ( IOobject ( "UaMatrixConvection", runTime.timeName(), mesh, IOobject::NO_READ, ...
a bivariate wavelet is the tensor product of two univariate functions on the same scale, either both wavelets or a wavelet and a scaling function. With an anisotropic construction, a bivariate wavelet is the tensor product of two univariate wavelets on arbitrary, unrelated scales. The idea to ...
More precisely, the divergence theorem states that the outward flux of a tensor field through a closed surface is equal to the volume integral of the divergence over the region inside the surface. Tepatnya, teorema ini menyatakan bahwa fluks sebuah medan vektor melalui permukaan tertutup sama de...
The idea of replacing a divergence constraint by a divergence boundary condition is investigated. The connections between the formulations are considered in detail. It is shown that the most common methods of using divergence boundary conditions do not always work properly. Necessary and sufficient cond...
We present a new method for evolving the equations of magnetohydrodynamics (both Newtonian and relativistic) that is capable of maintaining a divergence-free magnetic field (∇⋅B=0) on adaptively refined, conformally moving meshes. The method relies on evolving the magnetic vector potential and ...