Explicit expressions for Rortex tensor and velocity gradient tensor decomposition

Gao Yisheng; Yu Yifei; Liu Jianming; Liu Chaoqun

首页> 外文期刊>Physics of fluids >Explicit expressions for Rortex tensor and velocity gradient tensor decomposition

【24h】

Explicit expressions for Rortex tensor and velocity gradient tensor decomposition

机译：ROTEX TENTOR和VELOCITY梯度张量分解的显式表达式

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

The introduction of Rortex provides a new perspective to investigate the local properties of vortical structures in transitional and turbulent flows, as Rortex offers a new and systematic description of the local fluid rotation, including scalar, vector and tensor forms. Unfortunately, the previous definition of Rortex is not straightforward, which requires the explicit calculation of somewhat cumbersome coordinate rotation. In this letter, a new explicit tensor form of Rortex and the relevant explicit velocity gradient tensor decomposition are presented, based on an explicit formula of the Rortex vector. The explicit tensor form represents the real local rotational part of the velocity gradient tensor in the original coordinate system. The explicit calculation of coordinate rotations can be totally avoided, which indicates an important improvement of Rortex based velocity gradient tensor decomposition. Published under license by AIP Publishing.

机译：ROTTEX的引入提供了一种新的视角，以研究过渡和湍流流动中涡流结构的局部特性，因为ROTEX提供了对局部流体旋转的新的和系统描述，包括标量，矢量和张量形式。不幸的是，前面的Rortex定义并不简单，这需要显式计算稍微麻烦的坐标旋转。在这封信中，基于Rortex矢量的明确公式，提出了一种新的显式张力形式的ROTTEX和相关的显式速度梯度张量分解。显式张量形式表示原始坐标系中速度梯度张量的真实局部旋转部分。可以完全避免坐标旋转的显式计算，这表明基于ROTEX基速度梯度张量分解的重要改进。通过AIP发布在许可证下发布。

著录项

来源
《Physics of fluids》 |2019年第8期|共5页
作者
Gao Yisheng; Yu Yifei; Liu Jianming; Liu Chaoqun;
展开▼
作者单位

Univ Texas Arlington Dept Math Arlington TX 76019 USA;

Univ Texas Arlington Dept Math Arlington TX 76019 USA;

Univ Texas Arlington Dept Math Arlington TX 76019 USA;

Univ Texas Arlington Dept Math Arlington TX 76019 USA;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类流体力学;
关键词

相似文献

外文文献
中文文献
专利

1. Explicit expressions for Rortex tensor and velocity gradient tensor decomposition [J] . Gao Yisheng, Yu Yifei, Liu Jianming, Physics of fluids . 2019,第8期

机译：ROTEX TENTOR和VELOCITY梯度张量分解的显式表达式
2. Rortex-A new vortex vector definition and vorticity tensor and vector decompositions [J] . Liu Chaoqun, Gao Yisheng, Tian Shuling, Physics of fluids . 2018,第3期

机译：ROTEX-A新的涡旋矢量定义和涡旋张于传染媒介分解
3. Triple Decomposition of Velocity Gradient Tensor in Compressible Turbulence [J] . Radouan Boukharfane, Aimad Er-raiy, Linda Alzaben, Fluids . 2021,第3期

机译：可压缩湍流速度梯度张量的三倍分解
4. Compressibility effects on homogeneous isotropic turbulence using Schur decomposition of the velocity gradient tensor [C] . R. Boukharfane, A. Er-raiy, M. Parsani AIAA SciTech Forum and Exposition . 2021

机译：使用Schur分解对速度梯度张量的压缩效应均匀各向同性湍流
5. Optimization of Block-Based Tensor Decompositions through Sub-Tensor Impact Graphs and Applications to Dynamicity in Data and User Focus [D] . Huang, Shengyu. 2021

机译：通过子张量冲击图和应用于数据和用户焦点的动态性的基于块的张量分解的优化
6. Optical Acquisition and Polar Decomposition of the Full-Field Deformation Gradient Tensor Within a Fracture Callus [O] . Wangdo Kim, Sean S. Kohles -1

机译：裂缝愈伤组织内全场变形梯度张量的光学获取和极性分解
7. Compressibility effects on homogeneous isotropic turbulence using Schur decomposition of the velocity gradient tensor. [O] . Radouan Boukharfane, Aimad Er-Raiy, Matteo Parsani 2021

机译：血管分解对速度梯度张量的压缩效应均匀各向同性湍流。
8. Explicit Expressions of Barnett-Lothe Tensors and Their Associated Tensors for Orthotropic Materials. [R] . Dongye, C., Ting, T. C. 1989

机译：Barnett-Lothe张量及其相关张量对正交各向异性材料的显式表达。

Explicit expressions for Rortex tensor and velocity gradient tensor decomposition

摘要

著录项

相似文献

相关主题

期刊订阅