Application of a Total Pressure Sensor in Supersonic Flow for Shock Wave Analysis Under Low-Pressure Conditions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F25%3A00640851" target="_blank" >RIV/68081731:_____/25:00640851 - isvavai.cz</a>
Alternative codes found
RIV/62156489:43210/25:43927662
Result on the web
<a href="https://www.mdpi.com/1424-8220/25/20/6291" target="_blank" >https://www.mdpi.com/1424-8220/25/20/6291</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/s25206291" target="_blank" >10.3390/s25206291</a>
Alternative languages
Result language
angličtina
Original language name
Application of a Total Pressure Sensor in Supersonic Flow for Shock Wave Analysis Under Low-Pressure Conditions
Original language description
This study examines the design and implementation of a sensor developed to measure total pressure in supersonic flow conditions using nitrogen as the working fluid. Using a combination of absolute and differential pressure sensors, the total pressure distribution downstream of a nozzle-where normal shock waves are generated-was characterized across a range of low-pressure regimes. The experimental results were employed to validate and calibrate computational fluid dynamics (CFD) models, particularly within pressure ranges approaching the limits of continuum mechanics. The validated analyses enabled a more detailed examination of shock-wave behavior under near-continuum conditions, with direct relevance to the operational environment of differentially pumped chambers in Environmental Scanning Electron Microscopy (ESEM). Furthermore, an entropy increase across the normal shock wave at low pressures was quantified, attributed to the extended molecular mean free path and local deviations from thermodynamic equilibrium.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Sensors
ISSN
1424-8220
e-ISSN
1424-8220
Volume of the periodical
25
Issue of the periodical within the volume
20
Country of publishing house
CH - SWITZERLAND
Number of pages
23
Pages from-to
6291
UT code for WoS article
001602626000001
EID of the result in the Scopus database
2-s2.0-105020242091