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Main Title: Unsteady Effects on NOx Measurements in Pulse Detonation Combustion
Author(s): Hanraths, Niclas
Bohon, Myles D.
Paschereit, Christian Oliver
Djordjevic, Neda
Type: Article
Abstract: Emission measurements from unsteady combustion systems such as Pulse Detonation Combustion (PDC) are challenging due to the inherently large variations in pressure, temperature, composition, and flow velocity of the exhaust gas. Comparison of experimental data is additionally complicated by differences in operating conditions and gas sampling setup between different facilities. Qualitative considerations with regard to the sampling process from PDC, based on one-dimensional simulations, indicate a systematic influence of the sampling setup and extraction process on the resulting concentration measurements. Therefore, operating frequency, sample time, fill time, as well as PDC outlet and probe geometry were varied experimentally in order to assess the degree to which each of these parameters impact the resulting measured NOx in order to better inform researchers of these effects when making measurements. It was shown that measured NOx emissions can vary significantly depending on the choice of these parameters and therefore care must be exercised in order to reduce the influence of the sampling technique when aiming for comparable results.
Subject(s): NOx
emission measurement
pulse detonation combustion
transient gas sampling
Issue Date: 4-Mar-2021
Date Available: 6-Dec-2021
Language Code: en
DDC Class: 621 Angewandte Physik
Sponsor/Funder: DFG, 317741329, Minderung der NOx-Emissionen bei pulsierender Detonationsverbrennung
TU Berlin, Open-Access-Mittel – 2021
Journal Title: Flow, Turbulence and Combustion
Publisher: Springer Nature
Volume: 107
Issue: 3
Publisher DOI: 10.1007/s10494-021-00252-3
Page Start: 781
Page End: 809
EISSN: 1573-1987
ISSN: 1386-6184
TU Affiliation(s): Fak. 5 Verkehrs- und Maschinensysteme » Inst. Strömungsmechanik und Technische Akustik (ISTA) » FG Verbrennungskinetik
Appears in Collections:Technische Universität Berlin » Publications

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