Prediction of NO  control by basic and advanced gas reburning using the Two-Stage Lagrangian model

Han, Dong; Mungal, M. G.; Vladimir, Zamansky,; Tyson, T.J.

doi:10.1016/s0010-2180(99)00069-3

Cited by 32 publications

(18 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Inputs writes both text and binary output files [24]. Details of the formulation and description of TSL can be found in previous works [22][23][24][25][26].…”

Section: Tsl Modelmentioning

confidence: 99%

“…The two-stage Lagrangian model (TSL) employed in this study describes mixing as a two-stage process that is seen in a frame moving downstream with the normal fluid motion. The model is capable of adopting detailed chemical kinetics while also simulating basic mixing process that are important in turbulent gaseous-jet diffusion flames [18,19,[22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…Only few studies were so far reported using the TSL model. These include the works of Pickett et al [24], Broadwell et al [25], and Han et al [26]. Though these studies provided insight into how the TSL works, they however based their focus on soot and NO x emission without particular emphasis on ignition.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Two-stage Lagrangian modeling of ignition processes in ignition quality tester and constant volume combustion chambers

Alfazazi

Kuti

Naser

et al. 2016

Fuel

View full text Add to dashboard Cite

Keywords: two-stage Lagrangian model (TSL); ignition quality tester (IQT); constant volume combustion chamber (CVCC), iso-octane; n-heptane; n-dodecane; second stage ignition delay time; first stage ignition delay time. 1.0 Highlights • TSL model was used to simulate ignition delay time in the IQT and in the CVCC. • TSL model is efficient in simulating IQT of long ignition delay time fuels and CVCC experiments. • TSL modeling approach demonstrates the suitability of using detailed kinetic models to provide insights into spray combustion.

show abstract

“…Inputs writes both text and binary output files [24]. Details of the formulation and description of TSL can be found in previous works [22][23][24][25][26].…”

Section: Tsl Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Two-stage Lagrangian modeling of ignition processes in ignition quality tester and constant volume combustion chambers

Alfazazi

Kuti

Naser

et al. 2016

Fuel

View full text Add to dashboard Cite

show abstract

“…The present study also used a simplified reacting spray model to study temperature and equivalence ratio mixture profiles along the spray axis. The spray model, namely, the two-stage Lagrangian (TSL) model, was developed by Broadwell et al (Broadwell and Lutz, 1998) and has been used in several works of literature for studying mixture formation and emissions (Han et al, 1999;Cung et al, 2013b) under diesel-like conditions. The TSL model can simulate the mixing phenomenon of spray by using two-stages (or two reactors) representing flame-core and flame-sheet regions.…”

Section: Numerical Modelmentioning

confidence: 99%

Ignition Process and Flame Lift-Off Characteristics of dimethyl ether (DME) Reacting Spray

et al. 2021

View full text Add to dashboard Cite

Advanced combustion systems that utilize different combustion modes and alternative fuels have significantly improved combustion performance and emissions compared to conventional diesel or spark-ignited combustions. As an alternative fuel, dimethyl ether (DME) has been receiving much attention as it runs effectively under low-temperature combustion (LTC) modes such as homogeneous charge compression ignition (HCCI) and reactivity control combustion ignition (RCCI). Under compression-ignition (CI), DME can be injected as liquid fuel into a hot chamber, resulting in a diesel-like spray/combustion characteristic. With its high fuel reactivity and unique chemical formula, DME ignites easily but produces almost smokeless combustion. In the current study, DME spray combustion under several different conditions of ambient temperature (Tamb = 750–1100 K), ambient density (ρamb = 14.8–30 kg/m3), oxygen concentration (O2 = 15–21%), and injection pressure (Pinj = 75–150 MPa) were studied. The results from both experiments (constant-volume combustion vessel) and numerical simulations were used to develop empirical correlations for ignition and lift-off length. Compared to diesel, the established correlation of DME shows a similar Arrhenius-type expression. Sensitivity studies show that Tamb and Pinj have a stronger effect on DME's ignition and combustion than other parameters. Finally, this study provides a simplified conceptual mechanism of DME reacting spray under high reactivity ambient (high Tamb, high O2) and LTC conditions. Finally, this paper discusses engine operating strategies using a non-conventional fuel such as DME with different reactivity and chemical properties.

show abstract

“…However, NO can be destroyed in the presence of hydrocarbon fragments and this known pathway has been used to produce the NO-reburn process (Wendt et al, 1973;Smyth, 1996;Smoot et al, 1998;Han et al, 1999;Xu et al, 2001) which is used in industrial boilers to reduce nitric oxide emissions. In addition, NO destruction was predicted due to reactions in the fuel rich jet in model calculations of jet flames (Broadwell and Lutz, 1998).…”

Section: Background: No Formationmentioning

confidence: 99%

A Comparison of Single Shot Diesel Spray Combustion Emissions With Trends Predicted by a Conceptual Model

Labs

Parker

2007

Combustion Science and Technology

View full text Add to dashboard Cite

Results from a unique experimental system that quantifies combustion products from a single diesel combustion event are presented and the implications of these results are discussed. Data presented in this paper are the emission levels for carbon monoxide and nitric oxide, normalized by carbon dioxide produced, as a function of fuel quantity injected. Carbon monoxide is notably present in very short duration (or small mass) injection burns where the spray event concludes before the beginning of the major heat release. However, the trend for NO emission levels appears to be influenced by the interaction of combustion with injection. For events with an overlap between injection and the combustion event, reduced NO emission levels are observed. Examination of data from engines indicates a similar trend in NO emission behavior; residence time effects and=or entrainment of post combustion gases into the fuel jet are hypothesized as the physical mechanisms that explain the overall emission behavior.

show abstract

Prediction of NO control by basic and advanced gas reburning using the Two-Stage Lagrangian model

Cited by 32 publications

References 10 publications

Two-stage Lagrangian modeling of ignition processes in ignition quality tester and constant volume combustion chambers

Two-stage Lagrangian modeling of ignition processes in ignition quality tester and constant volume combustion chambers

Ignition Process and Flame Lift-Off Characteristics of dimethyl ether (DME) Reacting Spray

A Comparison of Single Shot Diesel Spray Combustion Emissions With Trends Predicted by a Conceptual Model

Contact Info

Product

Resources

About