Lidé

Ing. Vladimír Kůla, CSc.

Všechny publikace

Symbolic properties of quaternary system

  • Autoři: Ing. Vladimír Kůla, CSc.,
  • Publikace: Proceedings of the XVIII. International Scientific Conference THE APLICATION OF EXPERIMENTAL AND NUMERICAL METHODS IN FLUID MECHANICS AND ENERGY 2012. Žilina: University of Žilina, 2012. pp. 157-160. ISBN 978-80-554-0516-2.
  • Rok: 2012
  • Pracoviště: Katedra elektrických pohonů a trakce
  • Anotace:
    This article aim is to show the symbolic aspects of the numeric quaternary system. Quaternary system provides richer topology than the binary system. The linear topology of natural language is developed by means of the analogy with the structure of genetic information. The paper introduced a new level of description. It has a character description of wave shapes, which allows unifying several domains studied. Comprehensible information has its origin only in the nature of electromagnetic (electronic) signals. Space of mathematical infrastructure of quaternary system makes possible to recognize the hidden internal structure of language.

STRENGTH AND DYNAMIC TESTS OF MEASURING PRESSURE PROBE

  • Autoři: Vondřich, J., Ing. Vladimír Kůla, CSc.,
  • Publikace: Sborník konference ELEN 2010. Praha: ČVUT FEL, Katedra elektroenergetiky, 2010. ISBN 978-80-254-8089-2.
  • Rok: 2010
  • Pracoviště: Katedra elektrických pohonů a trakce
  • Anotace:
    Pressure probe for measuring pressure between turbo-compressor blades is loaded with wall vibrations and with air flow itself. In the article it is shown the assessment of the proposed probe in terms of strength, due to the risk of contact between the probe and the turbo-compressor blades, and the calculation of permissible frequency of vibrating walls, in which the probe is attached, is made. The maximum deflection of the free end was determined as a superposition of the static gas flow effect and the dynamic effects caused by the vibration of probe wall fitting.

THERMOACOUSTIC REFRIGERATION SYSTEM

  • Autoři: Ing. Vladimír Kůla, CSc.,
  • Publikace: Aplikácia experimentálnych a numerických metód v mechanike tekutín a energetike. Žilina: EDIS-vydavatelstvo ŽU, 2010. pp. 161-166. ISBN 978-80-554-0189-8.
  • Rok: 2010
  • Pracoviště: Katedra elektrických pohonů a trakce
  • Anotace:
    The thermoacoustic refrigerator described in this paper is of the standing wave variety, and consists of a quarter-wavelength resonator driven by an electrodynamic transducer. In the case of a thermoacoustic refrigerator the external work is supplied by the standing sound wave in the resonator. Primary purpose of this apparatus is to demonstrate the principle of an acoustic refrigerator or heat pump.

Acoustic Properties of Gas-filled Enclosure at Infrasonic Frequencies

  • Autoři: Ing. Vladimír Kůla, CSc.,
  • Publikace: Aplikácia experimentálnych a numerických metód v mechanike tekutín XVI. Žilina: EDIS, 2008. pp. 23-28. ISBN 978-80-8070-825-2.
  • Rok: 2008
  • Pracoviště: Katedra elektrických pohonů a trakce
  • Anotace:
    The effect of heat conduction on the acoustic impedance of gas filled enclosure is presented. As a result of the thermal conduction equation the temperature transfer function is given. In the absence of convection, the thermal transfer function determines the behaviour of gas-filled chambers at infrasonic frequencies. In general, infrasonic acoustic impedance of enclosure is a function of Fourier number and external impedances. The polytropic exponent is derived.

Za stránku zodpovídá: Ing. Mgr. Radovan Suk