Filtry
Vortex and the Balance between Vorticity and Strain Rate
A new analysis of the vortex-identification Q-criterion and its recent modifications is presented. In this unified framework based on different approaches to averaging of the cross-sectional balance between vorticity and strain rate in 3D, n...
Applied mathematics
- 2019 •
- Jimp •
- Odkaz
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Brief notes on vortex identification
An update on vortex identification, general vortex-identification requirements, and related vorticity and circulation aspects is presented....
BK - Mechanika tekutin
- 2011 •
- D
Rok uplatnění
D - Stať ve sborníku
Propeller Aerodynamic Analyses by Vortex-Lattice Method, Part 1: Basic Theory
Vortex theory, based on the Biot-Savart's law, is one of the most exact methods for propeller induced velocity calculations. The present vortex-lattice method respects the 3D geometry of a propeller blade. The blad...
JU - Aeronautika, aerodynamika, letadla
- 2008 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Vortex-identification methods from a different perspective
A more universal classification of vortex-identification methods starts with the basic fluid-mechanical approach adopted: Lagrangian or Eulerian. Eulerian methods local methods aim either at the vortex vol...
Pure mathematics
- 2018 •
- O
Rok uplatnění
O - Ostatní výsledky
Vortex flowmeters - principle, properties and use
This paper presents properties of vortex flowmeters. The principle is described; the bluf body shapes and methods of detecting vortices are discussed. The characteristics, priorities and disadvantages of the vortex flowmete...
JB - Senzory, čidla, měření a regulace
- 2014 •
- Jx •
- Odkaz
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Vortex identification: new requirements and limitations
Firstly, a brief survey dealing with vortex-identification methods is presented. The new vortex-identification method - based on the extraction of a so-called of the most popular schemes and formulated (explicitly ...
BK - Mechanika tekutin
- 2006 •
- D
Rok uplatnění
D - Stať ve sborníku
Vortex identification: new requirements and limitations
A brief critical survey dealing with popular vortex-identification methods is presented. Various applicability limitations of these popular schemes are pointed out and new general requirements on vortex identification are s...
BK - Mechanika tekutin
- 2007 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Corotational and Compressibility aspects leading to a modification of the vortex-identification Q-criterion
A three-dimensional modification of the vortex-identification Q-criterion is proposed. The modification, based on the corotational and compressibility arguments, performs better in regions of strong shearing....
BA - Obecná matematika
- 2015 •
- Jx •
- Odkaz
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Stretching response of Rortex and other vortex-identification schemes
response for several popular vortex-identification criteria and the recently proposed vortex vector (Rortex) is presented. In addition, the outcome of the triple-decomposition method in terms of the residual vorticity tens...
Applied mathematics
- 2019 •
- Jimp •
- Odkaz
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Consequences of the close relation between Rortex and swirling strength
vortex vector (Rortex) and the swirling strength. It is shownthat these vortex-identification methods share some relevant properties: (i) both provide the same and, practically, the largest vortex region,(ii) both...
Applied mathematics
- 2020 •
- Jimp •
- Odkaz
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
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