Results 11 to 20 of about 32,523 (343)

Broadband dual-frequency comb spectroscopy in a rapid compression machine

Optics Express, 2019
We demonstrate fiber mode-locked dual frequency comb spectroscopy for broadband, high resolution measurements in a rapid compression machine (RCM). We apply an apodization technique to improve the short-term signal-to-noise-ratio (SNR), which enables broadband spectroscopy at combustion-relevant timescales. We measure the absorption on 24345 individual
Anthony D. Draper, Ryan K. Cole, Amanda S. Makowiecki, Jeffrey Mohr, Andrew Zdanowicz, Anthony Marchese, Nazanin Hoghooghi, Gregory B. Rieker   +7 more
core   +6 more sources

Performance Characterization and Auto-Ignition Performance of a Rapid Compression Machine

Energies, 2014
A rapid compression machine (RCM) test bench is developed in this study. The performance characterization and auto-ignition performance tests are conducted at an initial temperature of 293 K, a compression ratio of 9.5 to 16.5, a compressed temperature ...
Hao Liu, Hongguang Zhang, Zhicheng Shi, Haitao Lu, Guangyao Zhao, Baofeng Yao   +5 more
doaj   +2 more sources

Spark discharge visualization in a rapid compression-expansion machine

37th International Symposium on Combustion - Book of abstracts, 2018
Spark channel visualization in a rapid compression-expansion machine was performed by a high-speed camera at a frame rate of 50 000 fps The main effort was to provide controlled flow conditions at the location of the spark electrodes in order to study spark channel deformation in engine relevant conditions while minimizing cyclic variations Both, the ...
Kapusta, Łukasz Jan, Jach, Agnieszka, Pyszczek, Rafał, Löfholm, Per, Leino, Juha, Sundell, Wärtsilä Finland Oy, Teodorczyk, Andrzej   +6 more
openaire   +3 more sources

Standardizing the Ignition Delay Time Measurements of Rapid Compression Machine: An Inverse Application of the Livengood–Wu Integral Method

Energies
The rapid compression machine measures ignition delay time at high pressures and low to intermediate temperatures. However, unavoidable facility effects, such as compression and heat loss, shift the measurements away from ideal (adiabatic and constant ...
Zhonghao Zhao, Yingtao Wu
doaj   +2 more sources

Reaction propagation, leading to developing detonation, in a rapid compression machine

Combustion and Flame
Optical imaging and pressure measurements are employed to indicate the nature of the varied changes occurring subsequent to compression in a Rapid Compression Machine, RCM, prior to their ultimate termination, usually in a detonation.
Li, J., Bradley, D.
core   +2 more sources

Combustion of n-C₃-C₆ Linear Alcohols: An Experimental and Kinetic Modeling Study. Part II: Speciation Measurements in a Jet-Stirred Reactor, Ignition Delay Time Measurements in a Rapid Compression Machine, Model Validation, and Kinetic Analysis. [PDF]

Energy Fuels, 2020
This work presents new experimental data for n-C3–C6 alcohol, combustion (n-propanol, n-butanol, n-pentanol, n-hexanol). Speciation measurements have been carried out in a jet-stirred reactor (p = 107 kPa, T = 550–1100 K, φ = 0.5, 1.0, 2.0) for n-butanol,
Pelucchi M, Namysl S, Ranzi E, Rodriguez A, Rizzo C, Somers KP, Zhang Y, Herbinet O, Curran HJ, Battin-Leclerc F, Faravelli T.   +10 more
europepmc   +2 more sources

Burst-mode 1-methylnaphthalene laser-induced fluorescence: extended calibration and measurement of temperature and fuel partial density in a rapid compression machine

Applied physics B, 2022
In this work, tracer-based laser-induced fluorescence (LIF) with the tracer 1-methylnaphthalene is utilized to study temperature and fuel courses in a rapid compression machine (RCM) under high temperature and pressure conditions.
U. Retzer, H. Ulrich, S. Will, L. Zigan
semanticscholar   +1 more source

Numerical and Experimental Investigations of CH₄/H₂ Mixtures: Ignition Delay Times, Laminar Burning Velocity and Extinction Limits

Energies, 2023
In this work, the influence of H2 addition on the auto-ignition and combustion properties of CH4 is investigated experimentally and numerically. Experimental ignition delay times (IDT) are compared with simulations and laminar burning velocities (LBVs ...
Simon Drost, Sven Eckart, Chunkan Yu, Robert Schießl, Hartmut Krause, Ulrich Maas   +5 more
doaj   +1 more source

UConnRCMPy: Python-based data analysis for Rapid Compression Machines [PDF]

Proceedings of the Python in Science Conference, 2016
Presented at the 10th US National Technical Meeting of the Combustion Institute in College Park, MD on 25 April 2017Abstract:Rapid Compression Machines (RCMs) are well-characterized devices used to measure several fundamental combustion quantities, such as the autoignition delay.
Weber, Bryan, Chih-Jen Sung
openaire   +2 more sources

An experimental and kinetic modeling study of the ignition delay and heat release characteristics of a five component gasoline surrogate and its blends with iso‐butanol within a rapid compression machine

International Journal of Chemical Kinetics, 2021
This study investigates the performance of a five component gasoline surrogate (iso-octane, toluene, n -heptane, 1-hexene, and ethanol) in representing the ignition delay time (IDT) behavior of gasoline (reference gasoline PR5801—research octane number ...
Christian A. Michelbach, A. Tomlin
semanticscholar   +1 more source