Research of a wind tunnel parameters by means of cross-section analysis of air flow profiles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F19%3A43959514" target="_blank" >RIV/49777513:23210/19:43959514 - isvavai.cz</a>

Result on the web

<a href="https://aip.scitation.org/doi/abs/10.1063/1.5138636" target="_blank" >https://aip.scitation.org/doi/abs/10.1063/1.5138636</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5138636" target="_blank" >10.1063/1.5138636</a>

Result language

angličtina

Original language name

Research of a wind tunnel parameters by means of cross-section analysis of air flow profiles

Original language description

Wind tunnel is constructed. It is characterized by a high degree of airflow laminarization. The main constructive element of this aerodynamic tube is the laminarization module. It allows the destruction of turbulent fluxes by providing a homogeneous laminar flow. In order to evaluate the performance of the developed aerodynamic tube, a series of experimental studies was conducted in the range of air velocity of 10-50?m·s-1. To establish the laws of the distribution of flow parameters relative to the section the cross-sectional analysis method was used. It consists of forming a series of measuring planes that characterize the distribution of dynamic pressure and air flow velocity relative to the testing section. After that, the received experimental data are interpreted as three-dimensional graphic dependencies of the studied quantities. There is clearly observed a certain local area of stable values of dynamic pressure and flow velocity, after which they are sharply reduced in the direction of the walls of the section for testing. As a result of the analysis, a series of digital profiles of the distribution of dynamic pressure in the measuring planes of the testing section were obtained. Analysis of the obtained graphic dependencies allowed establishing of the uneven distribution of the dynamic pressure difference in the boundary layer zone along the inner perimeter of the test section is worth noting. Because of the side of the upper wall of the test section, the dynamic pressure difference is greater than the sidewall. This phenomenon is due to the difference in area of their blown air. Consequently, at a wall with a larger contact surface, a constant air stream experiences more loss of its kinetic energy than a wall with a smaller area. Especially this tendency is observed in the turbulent boundary layer.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/TH02020057" target="_blank" >TH02020057: Turbine profile cascades for supersonic flow fields</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

AIP Conference Proceedings

ISBN

978-0-7354-1936-0

ISSN

0094-243X

e-ISSN

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Number of pages

8

Pages from-to

020024-1-020024-8

Publisher name

American Institute of Physics Inc.

Place of publication

Neuveden

Event location

Plzeň

Event date

Jun 11, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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