Numerical Simulation of Turbulent Reacting flow in a Combustion Chamber Using Detailed Chemical Kinetics

2013 ◽  
Author(s):  
Masoud Darbandi ◽  
M. Ghafourizadeh ◽  
Gerry Schneider
Keyword(s):  
Numerical Simulation ◽  
Combustion Chamber ◽  
Chemical Kinetics ◽  
Reacting Flow ◽  
Detailed Chemical Kinetics ◽  
Detailed Chemical

Numerical Simulation for Ignitability of Spark Plug using Detailed Chemical Kinetics

2014 ◽  
Author(s):  
Takafumi Shichida ◽  
Hirotoshi Yoshizaki ◽  
Shunsuke Tsuga ◽  
Noriyasu Sugimoto ◽  
Hiroyuki Kameda
Keyword(s):  
Numerical Simulation ◽  
Chemical Kinetics ◽  
Detailed Chemical Kinetics ◽  
Spark Plug ◽  
Detailed Chemical

Detailed Chemical Kinetics Based Simulation of Detonation-Containing Flows

2018 ◽  
Author(s):  
Takuma Sato ◽  
Stephen Voelkel ◽  
Venkat Raman
Keyword(s):  
Chemical Kinetics ◽  
Adaptive Mesh Refinement ◽  
Computational Models ◽  
Flow Behavior ◽  
Detonation Front ◽  
Injection System ◽  
Reacting Flow ◽  
Pressure Waves ◽  
Detailed Chemical Kinetics ◽  
Detailed Chemical

Reliable and robust simulations of detonations in inhomogeneous and turbulent environments are of direct importance in the design of rotating detonation engines (RDEs). In particular, computational models will be especially useful in designing and optimizing discrete injectors that introduce fuel and air separately into the detonation chamber, but ensure appropriate level of mixing to sustain detonations but minimize backflow of detonation products and pressure waves into the feed plenums. Since the structure of detonations itself is non-ideal, models have to include a detailed description of this reacting flow in order to be predictive in nature. Here, a highly-scalable open source based solver has been developed for complex detonating flows such that a) the detonation processes are described using detailed chemical kinetics, b) the method is computationally efficient through the introduction of adaptive mesh refinement, and c) the solver can handle complex geometries of relevance to RDE design. Grid convergence of key metrics for detonations is evaluated using canonical flows. Further, the importance of the use of detailed chemical kinetics is illustrated by extracting the composition structure behind a two-dimensional detonation front. Finally, simulations of a practical RDE configuration are used to demonstrate the applicability of this solver to analyzing geometries. The simulation captures the general trends of the experiment well. It is found that the detonation occurs under partially-premixed conditions. Propagation of pressure waves to the injection system is observed which could influence flow behavior in the oxidizer plenum.

A Turbulent Reacting Flow Model that Incorporates Detailed Chemical Kinetics

1994 ◽  
Vol 101 (1-6) ◽  
pp. 361-382 ◽  
Author(s):  
J. BROUWER ◽  
G. SACCHI ◽  
J. P. LONGWELL ◽  
A. F. SAROFIM
Keyword(s):  
Chemical Kinetics ◽  
Flow Model ◽  
Reacting Flow ◽  
Detailed Chemical Kinetics ◽  
Detailed Chemical

A Simulation of the Combustion of N-Heptane Fueled HCCI Engines Using a 3-D Model With Detailed Chemical Kinetics

2005 ◽  
Author(s):  
Chengke Liu ◽  
Ghazi A. Karim
Keyword(s):  
Carbon Monoxide ◽  
Combustion Chamber ◽  
Chemical Kinetics ◽  
Combustion Process ◽  
Combustion Characteristics ◽  
Chamber Wall ◽  
Detailed Chemical Kinetics ◽  
Hcci Engine ◽  
Initial Location ◽  
Detailed Chemical

A CFD multi-dimensional computational approach has been developed through a combination of a modified KIVA3 code together with a detailed chemical kinetics scheme for the oxidation of n-heptane in air while considering the effects of turbulence. The effects of adding different quantities of hydrogen, methane and carbon monoxide to the heptane on the combustion characteristics of the HCCI engine under different conditions were investigated both experimentally and numerically. The effects of changes in the combustion chamber wall surface temperature on the combustion characteristics of the HCCI engine were examined. It was found that the presence with n-heptane of some hydrogen, methane or carbon monoxide could delay to various extents the autoignition, while changes in the values of the combustion chamber wall temperature influence the autoignition timing and its initial location. It is suggested that the supplementing of the liquid fuel with gaseous fuels and/or application of a suitable glow-plug surface of optimum size and location fitted with temperature control may aid in controlling the combustion process of an HCCI engine while obtaining higher power output without producing knock.

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