نتایج جستجو برای: flame holder

تعداد نتایج: 25024  

Flame stability in a lean fuel-air mixture is studied experimentally in a metal–ceramic porous burner. Ceramic medium with small pore diameter is inserted on the metal porous medium in order to prevent flame blow off. Position of the flame is obtained with the measured temperature profile in the sidewalls of the burner. Temperature profiles are obtained at different firing rates and equivalence...

Journal: :iranian journal of applied animal science 2013
m.z. ali s. sultana m.t. rahman m.s. islam

considering different fertility traits 411 cows from 73 farms used for economic analyses. from these, 202 lactating cows were selected for evaluating the fertility status. pre-tested data sheets were used to record the socioeconomic status of the farms including their assets, cost and return and productive and reproductive performance of the dairy cows. targets were set considering the situatio...

2003
F. K. Röpke J. C. Niemeyer

We present a numerical investigation of the cellular burning regime in Type Ia supernova explosions. This regime holds at small scales (i.e. below the Gibson scale), which are unresolved in large-scale Type Ia supernova simulations. The fundamental effects that dominate the flame evolution here are the Landau-Darrieus instability and its nonlinear stabilization, leading to a stabilization of th...

2013
J. Prager H. N. Najm M. Valorani

Results of a detailed numerical analysis of an n-heptane/air edge flame are presented. The equations of a low-Mach number reacting flow are solved in a two-dimensional domain using detailed models for species transport and chemical reactions. The reaction mechanism involves 560 species and 2538 reversible reactions. We consider an edge flame that is established in a mixing layer with a uniform ...

2016
Raluca Lefticaru Luis F. Macías-Ramos Ionut-Mihai Niculescu Laurentiu Mierla

Kernel P systems (or kP systems) bring together relevant features from several P systems flavours into a unified kernel model which allows solving complex problems using a straightforward code programming approach. kPWorkbench is a software suite enabling specification, parsing and simulation of kP systems models defined in the kernel P– Lingua (or kP-Lingua) programming language. It has been s...

2005
William Benjy Mikel Chris Salamone Melissa Newman

Semitendinosus muscles from low quality, cull cows were trimmed, separated into three fat levels (10, 20, and 30%), treated with 0, 5, 10, 15, or 20 seconds of surface flame application, ground, and formed into patties. Patties were quick frozen (-80 C for 1 hr) and stored at -10 C for 0, 4 or 24 days. Hunter “L” and “b” values increased (P<.01) and Hunter “a” values decreased (P<.01) as flame ...

2016
Xiaohui Mu Yinglei Song Bing Zhang

Recently, video based flame detection technologies have become an important approach to the early detection of potential fire disasters. The recognition accuracy of most of the existing approaches for video based flame detection is not satisfactory. In this paper, we develop a new video based flame detection algorithm that can accurately recognize flames in video sequences based on color and ge...

2006
Elmy Johana Mohamad Ruzairi Abdul Rahim

This paper deals with the development of flame imaging system using laser-based tomography. The aim of this project is to obtain the concentration profile of the flame to be incorporated in laser-based transmission tomography measurement system for combustion on-line monitoring. The system can be applied in real–time manner to produce a cross sectional images of flame such as that in a combusti...

2004
Satbir Singh Long Liang Song-Charng Kong Rolf D. Reitz

A new combustion model is developed and applied to simulate combustion in dual-fuel engines in which the premixed natural gas is ignited by the combustion flame initiated by a diesel spray. The model consists of a diesel auto-ignition model and a flame propagation model. A G-equation model previously developed to simulate SI engine combustion was incorporated with an auto-ignition model to simu...

Journal: :JCP 2013
Wenhui Li Peixun Liu Ying Wang Huiying Li Bo Fu Hongyin Ni

A multi-feature fusion early flame detection algorithm based on D-S evidence theory is proposed. In this algorithm, first the method based on YcbCr and RGB color spaces is used for extracting the flame region of interest. Then flame classifiers based on flame flicker frequency and flame image correlation between frames are selected as two features of D-S feature fusion, the basic probability as...

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