نتایج جستجو برای: burning velocity

تعداد نتایج: 159147  

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 2001

Journal: :Energy 2012
Fiona Gillespie Wayne K Metcalfe Patricia Dirrenberger Olivier Herbinet Pierre-Alexandre Glaude Frédérique Battin-Leclerc Henry J Curran

This study presents new adiabatic laminar burning velocities of diethyl ether in air, measured on a flat-flame burner using the heat flux method. The experimental pressure was 1 atm and temperatures of the fresh gas mixture ranged from 298 to 398 K. Flame velocities were recorded at equivalence ratios from 0.55 to 1.60, for which stabilization of the flame was possible. The maximum laminar burn...

Journal: :تحقیقات نظام سلامت 0
جواد یوسفی لبنی کارشناس ارشد جامعه شناسی ، دانشکده علوم اجتماعی،دانشگاه تبریز، تبریز، ایران حسن میرزایی استادیار ،گروه علوم اجتماعی ، دانشکده علوم انسانی، دانشگاه فردوسی مشهد، مشهد، ایران

background: the self-burning is one of the most painful methods of suicide. self-burning was performed influenced by various factors. this study is aimed to study self-burning event within women of javanrood and ravansar cities in kermanshah province and demographic characteristics of unsuccessful victims. methods: this study was a survey – descriptive. research area is javanrood and ravansar c...

Journal: :health scope 0
fateme arbabi-kalati oral medicine department, zahedan university of medical sciences, zahedan, ir iran; oral and dental disease research center, zahedan university of medical sciences, zahedan, ir iran; oral and dental disease research center, zahedan university of medical sciences, zahedan, ir iran.tel: +98-5412414005 nour-mohammad bakhshani research center for children and adolescent’s health, baharan psychiatric center, zahedan university of medical sciences, zahedan, ir iran bahram tahmtan oral medicine department, zahedan university of medical sciences, zahedan, ir iran fatemeh movahedinejad school of dentistry, zahedan university of medical sciences, zahedan, ir iran

conclusions based on the results of the present study, patients with bms had sleep disorders, which should be considered in the clinical evaluation and treatment planning of these patients. results the mean age of the subjects in the bms and control groups were 49.9 ± 11 and 48.5 ± 8.3 years, respectively. the prevalence rates of sleep disorders in the bms and control groups were 78% and 38.7%,...

2008
F. K. Röpke J. C. Niemeyer W. Hillebrandt

We present a numerical model which allows us to investigate thermonuclear flames in Type Ia supernova explosions. The model is based on a finite-volume explicit hydrodynamics solver employing PPM. Using the level-set technique combined with in-cell reconstruction and flux-splitting schemes we are able to describe the flame in the discontinuity approximation. We apply our implementation to flame...

1999
Nevin Weinberg M. Coleman Miller Donald Q. Lamb

Many thermonuclear X-ray bursts exhibit brightness oscillations. The brightness oscillations are thought to be due to the combined effects of non-uniform nuclear burning and rotation of the neutron star. The waveforms of the oscillations contain information about the size and number of burning regions. They also contain substantial information about the mass and radius of the star, and hence ab...

2004
A. C. Calder J. W. Truran

We present the first high-resolution three-dimensional simulations of the deflagration phase of Type Ia supernovae that treat the entire massive white dwarf. We report the results of simulations in which ignition of the nuclear burning occurs slightly off-center. The subsequent evolution of the nuclear burning is surprisingly asymmetric with a growing bubble of hot ash rapidly rising to the ste...

2013
J. Miao C. W. Leung C. S. Cheung R. C. K. Leung

The present project was conducted with the circumferential-fuel-jets inverse diffusion flame (CIDF) burner burning liquefied petroleum gas (LPG) enriched with 50% of hydrogen fuel (H2). The range of stable operation of the CIDF burner in terms of Reynolds number (from laminar to turbulent flow regions), equivalence ratio and fuel jet velocity of LPG of the 50% H2-LPG mixed fuel was identified. ...

Journal: :Transactions of the Japan Society of Mechanical Engineers 1974

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