Publication detail

Increasing Accuracy of Simulations of Gas Flowing into Low-Pressure Areas Using Optical Methods on Shockwaves

BAYER, R. MAXA, J.

Original Title

Increasing Accuracy of Simulations of Gas Flowing into Low-Pressure Areas Using Optical Methods on Shockwaves

English Title

Increasing Accuracy of Simulations of Gas Flowing into Low-Pressure Areas Using Optical Methods on Shockwaves

Type

conference paper

Language

en

Original Abstract

The area of a shockwave is the most specific area of a supersonic gas flow because its general shape is affected not only by the gas itself but also by the pressure difference between the operating (input) pressure and the atmospheric (output) pressure and by the shape of the aperture or jet the gas passes through. Simulating a supersonic gas flow leaving a jet into a high-pressure area requires to use specific constant values depending on the type of the gas and boundary conditions, which were already experimentally verified. However, when simulating a supersonic gas flow entering a low-pressure (or vacuum) area, different constant values are needed. This paper deals with a possibility of using optical methods for displaying a shockwave within a low-pressure area in order to modify a numerical model of the flow to make the simulated shockwave match the one from experiment.

English abstract

The area of a shockwave is the most specific area of a supersonic gas flow because its general shape is affected not only by the gas itself but also by the pressure difference between the operating (input) pressure and the atmospheric (output) pressure and by the shape of the aperture or jet the gas passes through. Simulating a supersonic gas flow leaving a jet into a high-pressure area requires to use specific constant values depending on the type of the gas and boundary conditions, which were already experimentally verified. However, when simulating a supersonic gas flow entering a low-pressure (or vacuum) area, different constant values are needed. This paper deals with a possibility of using optical methods for displaying a shockwave within a low-pressure area in order to modify a numerical model of the flow to make the simulated shockwave match the one from experiment.

Keywords

ANSYS Fluent, Electron microscopy, Environmental scanning electron microscope, ESEM, Optical methods, Shadowgraph, Schlieren method, Shock wave, SolidWorks

Released

30.11.2017

Publisher

Brno University of Technology

Location

Brno

ISBN

978-80-214-5109-4

Book

Advanced Batteries Accumulators and Fuel Cells – 18th ABAF

Edition

18

Edition number

1

Pages from

179

Pages to

181

Pages count

3

BibTex


@inproceedings{BUT140263,
  author="Robert {Bayer} and Jiří {Maxa}",
  title="Increasing Accuracy of Simulations of Gas Flowing into Low-Pressure Areas Using Optical Methods on Shockwaves",
  annote="The area of a shockwave is the most specific area of a supersonic gas flow because its general shape is affected not only by the gas itself but also by the pressure difference between the operating (input) pressure and the atmospheric (output) pressure and by the shape of the aperture or jet the gas passes through. Simulating a supersonic gas flow leaving a jet into a high-pressure area requires to use specific constant values depending on the type of the gas and boundary conditions, which were already experimentally verified. However, when simulating a supersonic gas flow entering a low-pressure (or vacuum) area, different constant values are needed. This paper deals with a possibility of using optical methods for displaying a shockwave within a low-pressure area in order to modify a numerical model of the flow to make the simulated shockwave match the one from experiment.",
  address="Brno University of Technology",
  booktitle="Advanced Batteries Accumulators and Fuel Cells – 18th ABAF",
  chapter="140263",
  edition="18",
  howpublished="online",
  institution="Brno University of Technology",
  year="2017",
  month="november",
  pages="179--181",
  publisher="Brno University of Technology",
  type="conference paper"
}