Results 91 to 100 of about 32,749 (219)

Studies of Premixed Laminar and Turbulent Flames at Microgravity [PDF]

open access: yes
The work of the Principal Investigator (PI) has encompassed four topics related to the experimental and theoretical study of combustion limits in premixed flames at microgravity, as discussed in the following sections. These topics include: (1) radiation
Ronney, Paul D.
core   +1 more source

Non-linear simulations of combustion instabilities with a quasi-1D Navier-Stokes code

open access: yes, 2010
As lean premixed combustion systems are more susceptible to combustion instabilities than non-premixed systems, there is an increasing demand for improved numerical design tools that can predict the occurrence of combustion instabilities with high ...
Allam   +29 more
core   +1 more source

Flame propagation and extinction in particle clouds [PDF]

open access: yes
Two phase flame propagation and extinction theory required to support the corresponding experiments planned for the space shuttle is being developed. Also being planned are specialized collaborative, experimental and theoretical NASA UCSD studies needed ...
Berlad, A. L., Joshi, N. D.
core   +1 more source

Measurement and Identification of Flame Describing Function (FDF) Based on Parallel Subsystem Model

open access: yesAerospace
Because of the need for low pollutant emissions, industrial gas turbines typically use partially premixed gases for combustion. However, the nonlinear dynamic characteristics of partially premixed flames have not been studied sufficiently.
Zhaohui Wang, Yichen Wang, Min Zhu
doaj   +1 more source

On the Structure and Stabilization Mechanisms of Planar and Cylindrical Premixed Flames [PDF]

open access: yes
The configurational simplicity of the stationary one-dimensional flames renders them intrinsically attractive for fundamental flame structure studies. The possibility and fidelity of studies of such flames on earth, however, have been severely restricted
Eng, James A., Law, Chung K., Zhu, Delin
core   +1 more source

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

open access: yes, 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   +2 more
core   +3 more sources

Structure and Laminar Flame Speed of an Ammonia/Methane/Air Premixed Flame under Varying Pressure and Equivalence Ratio. [PDF]

open access: yesEnergy Fuels, 2021
Rocha RC   +9 more
europepmc   +1 more source

An efficient flamelet progress-variable method for modeling non-premixed flames in weak electric fields

open access: yes, 2017
Combustion stabilization and enhancement of the flammability limits are mandatory objectives to improve nowadays combustion chambers. At this purpose, the use of an electric field in the flame region provides a solution which is, at the same time, easy ...
De Palma, P.   +3 more
core   +1 more source

An SMLD joint PDF model for turbulent non-premixed combustion using the flamelet progress-variable approach

open access: yes, 2015
This paper provides an improved flamelet/progress variable (FPV) model for the simulation of turbulent combustion, employing the statistically most likely distribution (SMLD) approach for the joint probability density function (PDF) of the mixture ...
Coclite, Alessandro   +4 more
core   +1 more source

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