Results 71 to 80 of about 575 (165)

Premixed Turbulent Combustion in Opposed Streams

open access: yes, 1992
Premixed turbulent combustion in opposed streams has been studied experimentally by the use of two component laser doppler aneomometry. This flow geometry is part of a class of stagnating flows used to study turbulent combustion in recent years. It does not involve any surface near the flames because of the flow symmetry thus circumventing many of the ...
Kostiuk, L. W., Cheng, R. K.
openaire   +1 more source

A Generalised Series Model for the LES of Premixed and Non-Premixed Turbulent Combustion

open access: yesEnergies
In this study, the generality and prediction accuracy of a generalised series model for the large eddy simulation of premixed and non-premixed turbulent combustion is explored. The model is based on the Taylor series expansion of the chemical source term
Weilin Zeng   +4 more
doaj   +1 more source

DNS of turbulence backscatter in a laboratory-scale swirl stabilized aero-combustor

open access: yesApplications in Energy and Combustion Science
Classical theories of turbulence suggest that the kinetic energy cascade in nonreacting flows has a net transfer of energy from large to small scales. However, previous studies demonstrated that the thermal expansion of premixed flames can reverse the ...
Bruno S. Soriano, Jacqueline H. Chen
doaj   +1 more source

Simulations of combustion roar in turbulent attached and lifted turbulent methane jet flames

open access: yesEngineering Transactions, 2014
The present work presents sample results of preliminary computations of the turbulent aerothermodynamic flow field and of the noise generated by the flame front, due to turbulent fluctuations in the flame (combustion roar), in lifted and attached jet ...
P. MARAZIOTI, P. KOUTMOS
doaj  

Numerical modelling of a CAN combustion chamber with swirler using probability density functions (PDF) and eddy dissipation model (EDM)

open access: yesResults in Engineering
This study employs a well-established experimental setup, involving a can combustor with swirling, recirculating, and turbulent reactive flow to evaluate the performance of combustion and turbulence modelling within the combustion chamber.
Nebi Can Aslan   +3 more
doaj   +1 more source

DNS Study of Freely Propagating Turbulent Lean-Premixed Flames with Low-Temperature Chemistry in the Broken Reaction Zone Regime

open access: yesEnergies
The novel engines nowadays with high efficiency are operated under the superpressure, supercritical, and supersonic extreme conditions that are situated in the broken reaction zone regime.
Yi Zhang   +4 more
doaj   +1 more source

CHEMISTRY-TURBULENCE COUPLING IN A MODEL OF INHOMOGENOUSLY PREMIXED COMBUSTION

open access: yesTASK Quarterly, 2003
Results of work on an extension of the turbulent flame speed model used for a mathematical description of partially premixed combustion are presented. The approach is based on the concept of internal coupling between the turbulence of the mixed fuel and
JANUSZ BADUR   +2 more
doaj  

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