Detail publikace

Influence of Second Viscosity on Pressure Pulsation

HIMR, D. HABÁN, V. FIALOVÁ, S.

Originální název

Influence of Second Viscosity on Pressure Pulsation

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

A mathematical model of pulsating flow is proposed in the paper. The model includes more accurate description of energy dissipation, so it allows, for example, better stability analysis of water power plant control and more effective operation. Flow in a pipeline system is usually treated as a one-dimensional flow. This is also applied for more difficult cases of the Newtonian and non-Newtonian liquids simulations in the rigid or flexible pipes. Computational simulations of pressure pulsations in pipelines often predict lower damping than what the experimental results show. This discrepancy can be caused by neglecting one of the important damping mechanisms. The second viscosity describes the energy losses due to the compressibility of the liquid. Its existence and use in the computations specifies the real pulsations damping descriptions and predictions. A frequency dependent model of pressure pulsations including second viscosity is introduced. The second viscosity is determined from the system eigenvalue. The experiments were performed with water for low frequencies (from 0.1 to 1 kHz). This area is not fully covered by the current available research results.

Klíčová slova

Second viscosity, damping, pressure pulsation, frequency domain

Autoři

HIMR, D.; HABÁN, V.; FIALOVÁ, S.

Vydáno

12. 12. 2019

Nakladatel

MDPI

ISSN

2076-3417

Periodikum

Applied Sciences - Basel

Ročník

9

Číslo

24

Stát

Švýcarská konfederace

Strany od

1

Strany do

12

Strany počet

12

URL

https://www.mdpi.com/2076-3417/9/24/5444

Plný text v Digitální knihovně

http://hdl.handle.net/11012/184120

BibTex

@article{BUT160853,
  author="Daniel {Himr} and Vladimír {Habán} and Simona {Fialová}",
  title="Influence of Second Viscosity on Pressure Pulsation",
  journal="Applied Sciences - Basel",
  year="2019",
  volume="9",
  number="24",
  pages="1--12",
  doi="10.3390/app9245444",
  issn="2076-3417",
  url="https://www.mdpi.com/2076-3417/9/24/5444"
}