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On Dimensionless Numbers
The goal is to provide a little review on dimensionless numbers, commonly encountered in chemical engineering. Both their sources are considered: dimensional analysis and scaling of governing equations with boundary conditions. The ...
CI - Průmyslová chemie a chemické inženýrství
- 2008 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Non-Traditional Approach to Dimensionless Definition of Local Energy Dissipation Rate in an Agitated Vessel
Based on turbulence spectrum analysis the dimensionless energy dissipation rate newly defined for agitated vessel as follows e/((Nd)4/n) was found constant with boththe results of inspection analysis of k - e turbulence mod...
CI - Průmyslová chemie a chemické inženýrství
- 2006 •
- D
Rok uplatnění
D - Stať ve sborníku
Local Energy Dissipation in Agitated Vessel - New Definition of Dimensionless Dissipation by Energy Spectrum Analysis
New definition of dimensionless energy dissipation in agitated vessel e/((Nd)4/n) = const. for highly enough Reynolds number. The proposed definition was derived based on energy spectrum analysis and Kolmogoroff theory of local isot...
JP - Průmyslové procesy a zpracování
- 2005 •
- D
Rok uplatnění
D - Stať ve sborníku
Linearization of the quadratic eigenvalue problem, Jordan condition number and dimensionless analysis
as the well known dimensionless analysis of the one mass dynamical system and is added...
BI - Akustika a kmity
- 2007 •
- D
Rok uplatnění
D - Stať ve sborníku
Dimensional Analysis and Modelling in Mechanics of Solids
The article deals with model design conditions. The theory of models is developed using findings of dimensional analysis. It is shown that any physical problem can be described by a set of dimensionless parameters. Model design cond...
BE - Teoretická fyzika
- 2010 •
- D
Rok uplatnění
D - Stať ve sborníku
Analysis of the subsonic and supersonic flow using analytical and numerical methods
The article presents the analysis of the 1D flow of compressible fluid by means that the calculation of dimensionless velocity for particular flow conditions varies in the area that the dependence of dimensionless velocity ...
JG - Hutnictví, kovové materiály
- 2015 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Identification of weed species using dimensionless analysis of leaves.
To identify differences among the six weed species (AGRRE, CHEAL, GALPA, AMARE, MALNE and CONAR) on digital images a dimensionless analysis of leaf area was used. Discrimination was carried out according to the following leaf featur...
GF - Choroby, škůdci, plevely a ochrana rostlin
- 2001 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Dimensionless Parameters in Modeling systems containing chemical reaction
In the proccess and chemical engineering there are know different ways of modeling systems due to their further optimalization. The optimization criterion is usually overall costs minimum, i.e. the sum of yearly investments and operational costs shou...
JE - Nejaderná energetika, spotřeba a užití energie
- 2006 •
- D
Rok uplatnění
D - Stať ve sborníku
A method of detecting a failure of a rectifier of excitation of a synchronous generator
). Further, the frequency analysis of the measured signal is used to evaluate multiples of the fun-damental frequency. The dimensionless current factor Xi, possibly the dimensionless voltage factor Xu of the failure are mea...
Automation and control systems
- 2024 •
- P •
- Link
Rok uplatnění
P - Patent
Výsledek na webu
A method of detecting a failure of rotary rectifier of ringless synchronous machines with asynchronous-type rotary exciters
side of the source (2) of excitation. Then the frequency analysis (12. The dimensionless factor Xi of the failure is calculated, the failure-free reference dimensionless factor Xi_ref is measured, and the failure refer-enc...
Automation and control systems
- 2024 •
- P •
- Link
Rok uplatnění
P - Patent
Výsledek na webu
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