具有尺度相关排列和交叉螺旋度的不可压缩MHD turbulence理论
Theory of incompressible MHD turbulence with scale-dependent alignment and cross-helicity
摘要：
基于Boldyrev的排列假设和涨落v和b的正负排列概率p和q，构造了具有非零交叉螺旋度的MHD湍流各向异性理论。在观测结果的指导下，表明归一化的交叉螺旋度和概率p在惯性范围内近似为常数，Boldyrev理论的推广取决于三个比率w+/w-，ω +/ω-和p/q。当w+ = w-，n + = n-，p = q时，该理论简化为博尔迪列夫的原始理论。
英文摘要：
(Abridged) An anisotropic theory of MHD turbulence with nonvanishing cross-helicity is constructed based on Boldyrev's alignment hypothesis and probabilities p and q for fluctuations v and b to be positively or negatively aligned. Guided by observations suggesting that the normalized cross-helicity and the probability p are approximately constant in the inertial range, a generalization of Boldyrev's theory is derived that depends on the three ratios w+/w-, epsilon+/epsilon-, and p/q. The theory reduces to Boldyrev's original theory when w+ = w-, epsilon+ = epsilon-, and p = q.
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