Results 81 to 90 of about 15,347 (202)

Flow process in combustors [PDF]

Fluid mechanical effects on combustion processes in steady flow combustors, especially gas turbine combustors were investigated. Flow features of most interest were vorticity, especially swirl, and turbulence. Theoretical analyses, numerical calculations,
Gouldin, F. C.
core   +1 more source

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

, 1999
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 ...
Zimont, Vladimir L.
core  

Premixed turbulent combustion [PDF]

, 1991
openaire   +3 more sources

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

Energies
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, Xujiang Wang, Kai Hong Luo, Konstantina Vogiatzaki, Salvador Navarro-Martinez   +4 more
doaj   +1 more source

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

Applications 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

Engineering 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)

Results 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, Kursad Melih Güleren, Muhammad Faizan, Imran Afgan   +3 more
doaj   +1 more source

Aerodynamic properties of turbulent combustion fields [PDF]

Flow fields involving turbulent flames in premixed gases under a variety of conditions are modeled by the use of a numerical technique based on the random vortex method to solve the Navier-Stokes equations and a flame propagation algorithm to trace the ...
Hsiao, C. C., Oppenheim, A. K.
core   +1 more source

Enstrophy transport conditional on local flow topologies in different regimes of premixed turbulent combustion. [PDF]

Sci Rep, 2017
Papapostolou V, Wacks DH, Chakraborty N, Klein M, Im HG.   +4 more
europepmc   +1 more source

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

Energies
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, Yinhu Kang, Xiaomei Huang, Pengyuan Zhang, Xiaolin Tang   +4 more
doaj   +1 more source