scispace - formally typeset
Journal ArticleDOI

A general classification of three-dimensional flow fields

Min S Chong, +2 more
- 01 May 1990 - 
- Vol. 2, Iss: 5, pp 765-777
Reads0
Chats0
TLDR
In this paper, the geometry of solution trajectories for three first-order coupled linear differential equations can be related and classified using three matrix invariants for elementary three-dimensional flow patterns defined by instantaneous streamlines for flow at and away from no slip boundaries for both compressible and incompressible flow.
Abstract
The geometry of solution trajectories for three first‐order coupled linear differential equations can be related and classified using three matrix invariants. This provides a generalized approach to the classification of elementary three‐dimensional flow patterns defined by instantaneous streamlines for flow at and away from no‐slip boundaries for both compressible and incompressible flow. Although the attention of this paper is on the velocity field and its associated deformation tensor, the results are valid for any smooth three‐dimensional vector field. For example, there may be situations where it is appropriate to work in terms of the vorticity field or pressure gradient field. In any case, it is expected that the results presented here will be of use in the interpretation of complex flow field data.

read more

Citations
More filters
Journal ArticleDOI

Characteristics of Flow and Flame Behavior Behind Rifled/Unrifled Nozzles

TL;DR: In this article, a novel rifled nozzle was installed behind a conventional combustion exhauster to improve combustion efficiency, and the flow characteristics behind the nozzles (rifled and unrifled) were visualized and detected using the smoke-wire flow visualization, particle image velocimetry, and hot-wire anemometry.
Journal ArticleDOI

Lamination and mixing in three fundamental flow sequences driven by electromagnetic body forces.

TL;DR: The cat's eyes flip sequence has higher lamination, stretching, and mixing rates than the tendril and whorl and the blinking vortex sequences, and shows that bakerlike in situ mixers can be conceived by dynamically controlling a pair of local jets and by integrating lamination during stirring stages with persistent geometries.
Proceedings ArticleDOI

Combined experimental and numerical investigation of a transonic space launcher wake

TL;DR: In this article, the authors combined experimental and numerical investigations of the turbulent wake of a generic space launcher at transonic free stream conditions (Ma∞ = 0.7 and ReD = 1.0 · 106 ) are performed to gain a better understanding of intricate phenomena of the wake flow physics and validate new methods for its analysis.
Journal ArticleDOI

Turbulence, pseudo-turbulence, and local flow topology in dispersed bubbly flow

TL;DR: In this article, an efficient coupled level-set volume-of-fluid solver based on a fast Fourier transform algorithm is implemented to enable a high resolution and fast computation at the same time.
Proceedings ArticleDOI

Scientific Visualization: methods and applications

TL;DR: In this survey, the three main research areas in Scientific Visualization are concentrated on: Intelligent Visualization Systems• Visualization of Vector- and Tensorfields• Augmented Reality Simulation.
References
More filters
Book

Nonlinear Oscillations, Dynamical Systems, and Bifurcations of Vector Fields

TL;DR: In this article, the authors introduce differential equations and dynamical systems, including hyperbolic sets, Sympolic Dynamics, and Strange Attractors, and global bifurcations.

A Reflection on Nonlinear Oscillations, Dynamical Systems, and Bifurcations of Vector Fields

TL;DR: In this paper, the authors introduce differential equations and dynamical systems, including hyperbolic sets, Sympolic Dynamics, and Strange Attractors, and global bifurcations.
Book

Differential Equations, Dynamical Systems, and Linear Algebra

TL;DR: In this article, the structure theory of linear operators on finite-dimensional vector spaces has been studied and a self-contained treatment of that subject is given, along with a discussion of the relations between dynamical systems and certain fields outside pure mathematics.
Journal ArticleDOI

Direct simulation of a turbulent boundary layer up to R sub theta = 1410

TL;DR: In this paper, the turbulent boundary layer on a flat plate, with zero pressure gradient, is simulated numerically at four stations between R sub theta = 225 and R sub tta = 1410.
Related Papers (5)