Results 21 to 30 of about 125,081 (296)

Numerical Prediction of Turbulent Spray Flame Characteristics Using the Filtered Eulerian Stochastic Field Approach Coupled to Tabulated Chemistry

Fluids, 2021
The Eulerian stochastic fields (ESF) method, which is based on the transport equation of the joint subgrid scalar probability density function, is applied to Large Eddy Simulation of a turbulent dilute spray flame.
Louis Dressler, Fernando Luiz Sacomano Filho, Florian Ries, Hendrik Nicolai, Johannes Janicka, Amsini Sadiki   +5 more
doaj   +1 more source

Implementation of the Scalar Dissipation Rate in the REDIM Concept and its Validation for the Piloted Non-Premixed Turbulent Jet Flames

Eurasian Chemico-Technological Journal, 2021
In order to address the impact of the concentration gradients on the chemistry – turbulence interaction in turbulent flames, the REDIM reduced chemistry is constructed incorporating the scalar dissipation rate, which is a key quantity describing the ...
Chunkan Yu, U. Maas
doaj   +1 more source

Scale-Resolving Simulation of a Propane-Fuelled Industrial Gas Turbine Combustor Using Finite-Rate Tabulated Chemistry

Fluids, 2020
The scale-resolving simulation of a practical gas turbine combustor is performed using a partially premixed finite-rate chemistry combustion model. The combustion model assumes finite-rate chemistry by limiting the chemical reaction rate with flame speed.
Kai Zhang, Ali Ghobadian, Jamshid M. Nouri   +2 more
doaj   +1 more source

Attendance Matters! Supporting First Year Students’ Success with a Structured Attendance Policy

Student Success, 2023
This work reports the effect of a revised attendance policy on attendance and course outcomes for two populations of students:  introductory general chemistry students and upper-level chemistry majors.
Lorrie Comeford
doaj   +1 more source

A Tabulated-Chemistry Approach applied to a Quasi-Dimensional Combustion Model for a Fast and Accurate Knock Prediction in Spark-Ignition Engines [PDF]

, 2019
The description of knock phenomenon is a critical issue in a combustion model for Spark-Ignition (SI) engines. The most known theory to explain this phenomenon is based on the Auto-Ignition (AI) of the end-gas, ahead the flame front.
Bozza, Fabio, DE BELLIS, Vincenzo, Teodosio, Luigi   +2 more
core   +1 more source

Development of a Computationally Efficient Tabulated Chemistry Solver for Internal Combustion Engine Optimization Using Stochastic Reactor Models

Applied Sciences, 2020
The use of chemical kinetic mechanisms in computer aided engineering tools for internal combustion engine simulations is of high importance for studying and predicting pollutant formation of conventional and alternative fuels.
Andrea Matrisciano, Tim Franken, Laura Catalina Gonzales Mestre, Anders Borg, Fabian Mauss   +4 more
doaj   +1 more source

Large Eddy Simulation of a Turbulent Spray Jet Flame Using Filtered Tabulated Chemistry

Journal of Combustion, 2020
This work presents Large Eddy Simulations of the unconfined CORIA Rouen Spray Burner, fed with liquid n-heptane and air. Turbulent combustion modeling is based on the Filtered TAbulated Chemistry model for LES (F-TACLES) formalism, designed to capture ...
Adrien Chatelier, Benoît Fiorina, Vincent Moureau, Nicolas Bertier   +3 more
doaj   +1 more source

Thermochemistry Comic as A Self Learning Resource for Grade 11 Students

Tarbiyah: Jurnal Ilmiah Kependidikan, 2021
The purposes of this development research are: (1) to develop a chemistry comic book in thermochemistry chapter, (2) to evaluate  quality of the chemistry comic book based on assessment of chemistry teachers  and  students at senior high school/islamic ...
Siska Oktapianti
doaj   +1 more source

Air mass factor formulation for spectroscopic measurements from satellites: Application to formaldehyde retrievals from the Global Ozone Monitoring Experiment [PDF]

, 2001
. We present a new formulation for the air mass factor (AMF) to convert slant column measurements of optically thin atmospheric species from space into total vertical columns.
Arlene Fiore, Buchwitz, Burrows, Chance, Chance, Chandrasekhar, Daniel J. Jacob, Dickerson, Griffin, Guenther, Herman, Hirsch, Holzinger, Horowitz, Isabelle Bey, Jacobson, Kelly Chance, Lee, Paul I. Palmer, Platt, Qinbin Li, Randall V. Martin, Robert J. D. Spurr, Robert Yantosca, Rozanov, Schubert, Sillman, Singh, Spurr, Stammes, Thomas, Thomas P. Kurosu, Wang, Wang, Wang, Wild   +35 more
core   +3 more sources

Computation of Entropy Production in Stratified Flames Based on Chemistry Tabulation and an Eulerian Transported Probability Density Function Approach

Entropy, 2022
This contribution presents a straightforward strategy to investigate the entropy production in stratified premixed flames. The modeling approach is grounded on a chemistry tabulation strategy, large eddy simulation, and the Eulerian stochastic field ...
Louis Dressler, Hendrik Nicolai, Senda Agrebi, Florian Ries, Amsini Sadiki   +4 more
doaj   +1 more source