Results 51 to 60 of about 15,347 (202)

Numerical investigation of high-pressure combustion in rocket engines using Flamelet/Progress-variable models

, 2014
The present paper deals with the numerical study of high pressure LOx/H2 or LOx/hydrocarbon combustion for propulsion systems. The present research effort is driven by the continued interest in achieving low cost, reliable access to space and more ...
Coclite A., Cutrone L., Gamal E., Jachimowski J., Marinov N., Meeks E., Prausnitz D., Reid R., Thomas J., Vingert L.   +9 more
core   +1 more source

Large Eddy Simulation of combustion instabilities in a lean partially premixed swirled flame [PDF]

, 2012
This paper investigates one issue related to Large Eddy Simulations (LES) of self- excited combustion instabilities in gas-fueled swirled burners: the effects of incom- plete mixing between the gas injection and the combustion chamber.
Albouze, Angelberger, Benedetta Franzelli, Bilger, Boudier, Colin, Colin, di Mare, Eleonore Riber, Fiorina, Franzelli, Freitag, Galpin, Giauque, Granet, Kaufmann, Laurent Y.M. Gicquel, Lieuwen, Meier, Moureau, Moureau, Poinsot, Poinsot, Roux, Roux, Schmitt, Selle, Selle, Sengissen, Sengissen, Shreekrishna, Sommerer, Thierry Poinsot, Truffin, Westbrook, Williams, Wolf   +36 more
core   +3 more sources

Further experimental results on the structure and acoustics of turbulent jet flames [PDF]

, 1975
The structure of open turbulent jet flames is experimentally studied in the context of their noise emission characteristics. The differences between premixed and (co-flow) non-premixed flames are explored.
Kumar, R. N.
core  

Front dynamics in turbulent media [PDF]

, 1997
A study of a stable front propagating in a turbulent medium is presented. The front is generated through a reaction-diffusion equation, and the turbulent medium is statistically modeled using a Langevin equation.
Marti, A. C., Sagues, F., Sancho, J. M.
core   +2 more sources

Direct numerical simulation of turbulent premixed methane-ammonia-air jet flames

Journal of Thermal Science and Technology
Methane-ammonia blended combustion has emerged as a promising strategy to reduce carbon emissions while maximizing the utilization of existing fossil-fuel-based burners, serving as a viable intermediate step towards carbon neutrality.
Takumi SUWABE, Ye WANG, Sayaka SUZUKI, Mamoru TANAHASHI   +3 more
doaj   +1 more source

Computational study of influence of inflow port channel design on spark-ignition natural gas engine parameters

MATEC Web of Conferences, 2018
Resistance is The article presents the results of the research of a charge swirl motion influence on working process, engine parameters and NOx emissions of a spark ignition premixed natural gas engine. The charge swirl motion was organized by tangential
Patsey Pavel, Galyshev Yuriy
doaj   +1 more source

Multi-Scale Turbulence Injector: a new tool to generate intense homogeneous and isotropic turbulence for premixed combustion

, 2010
Nearly homogeneous and isotropic, highly turbulent flow, generated by an original multi-scale injector is experimentally studied. This multi-scale injector is made of three perforated plates shifted in space such that the diameter of their holes and ...
Danaila, Luminita, Mazellier, Nicolas, Renou, Bruno   +2 more
core   +3 more sources

Effects of heat release on triple flames [PDF]

, 1995
Heat release effects on laminar flame propagation in partially premixed flows are studied. Data for analysis are obtained from direct numerical simulations of a laminar mixing layer with a uniformly approaching velocity field.
Liñán Martínez, Amable, Ruetsch, G., Vervisch, L.   +2 more
core   +2 more sources

Gas premixed combustion at high turbulence. Turbulent flame closure combustion model [PDF]

Experimental Thermal and Fluid Science, 2000
Abstract This paper is devoted to analyze the special class of turbulent premixed flames that we call intermediate steady propagation (ISP) flames. These flames are common to industrial premixed combustion chambers which operate at intensive turbulence when velocity pulsations are significantly higher than the flamelet combustion velocity.
openaire   +1 more source

Simulation of 2-way fluid structure interaction in a 3D model combustor [PDF]

, 2012
The liner of a gas turbine combustor is a very flexible structure that is exposed to the pressure oscillations that occur in the combustor. These pressure oscillations can be of very high amplitude due to thermoacoustic instability, when the fluctuations
Alemela, P.R., Kok, J.B.W., Shahi, M.
core   +3 more sources