Interpreting the effect of hydrogen addition on the auto-ignition of branched alkane: A case study of iso-butane/hydrogen/O2/Ar mixtures

Jiang, Xue; Chen, Jundie; Huang, Wenlin; Zhao, Hao

doi:10.1016/j.fuel.2020.119019

Cited by 5 publications

(3 citation statements)

References 54 publications

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“…The usage of the ST as a facility for (IDT) investigations has been dominant for decades. More than 300 published studies with different test conditions for several types of fuels and many kinds of shock tube designs have findings related to chemical kinetics and particularly ignition delay 34,38,39,40,41,42,43,44,45 . This is due to that it is instantly (in microseconds) brings the reactive gas mixture to a well‐defined temperature and pressure so that quick chemical reactions may be studied under zero‐dimensional circumstances without affecting transport processes.…”

Section: Resultsmentioning

confidence: 99%

“…2 was more suitable for finding the IDT of gaseous fuel than other positions, as it required a low Mach number. However, for the gaseous fuels, 39,41,42,45,47 the diaphragm location follows Position no. 2 (approximately the driven and driver section have the same length).…”

Section: Resultsmentioning

confidence: 99%

“…More than 300 published studies with different test conditions for several types of fuels and many kinds of shock tube designs have findings related to chemical kinetics and particularly ignition del ay. 34,38,39,40,41,42,43,44,45 This is due to that it is instantly (in microseconds) brings the reactive gas mixture to a welldefined temperature and pressure so that quick chemical reactions may be studied under zero-dimensional circumstances without affecting transport processes. When conducting ignition delay investigations, the shock tube was often calibrated by measuring the IDT of fuels and presenting it over the range of temperatures and pressures that had been determined.…”

Section: Parametric Resultsmentioning

confidence: 99%

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An experimental and numerical investigation of the effects of the diaphragm pressure ratio and its position on a heated shock tube performance

Badri

Elbashir

Saker

et al. 2022

Energy Science & Engineering

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The main purpose of this work was to investigate the performance of heated shock tube (ST) with different pressure ratios and diaphragm positions numerically and experimentally. The numerical model was developed to simulate the fluid flow inside a shock tube test facility located at Qatar University. The shock tube was a cast‐iron hollow tube with 6 m length, 50 mm internal diameter and 10 mm thickness. ST driver and driven sections were filled with helium–argon mixture and air. The driven section was heated up to 150°C using coils. At the middle of the ST, the diaphragm was made of aluminium sheet (0.5 mm) layers. Five different pressure ratios were implemented during the experiment, and performance evaluation depended on the strength of the incident shock Mach number. The inviscid numerical model solver used transient two‐dimensional time‐accurate Navier–Stokes CFD. The model introduced a parametric study regarding three different diaphragm positions (1m, 2m and 3m) and five pressure ratios (6–10) for each position. In addition to yielding the incident and reflected wave Mach number, reflected wave temperature was also considered a shock tube performance indicator. The incident Mach numbers for the diaphragm middle position from the experiment were compared against those conducted from the model, and good matching was observed. The parametric study results showed that at high‐pressure ratios, diaphragm Positions 1 and 3 could generate a 7.4% increase in shock wave Mach number compared with the diaphragm position‐2 model. Moreover, the diaphragm position‐3 model tends to have a 2% increase in the temperature behind the reflected shock wave compared with the other two positions.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%