نتایج جستجو برای: premixed micro

تعداد نتایج: 118490  

2006
Venkatramanan Raman Heinz Pitsch

A hybrid large-eddy simulation/filtered-density function (LES–FDF) methodology is formulated for simulating variable density turbulent reactive flows. An indirect feedback mechanism coupled with a consistency measure based on redundant density fields contained in the different solvers is used to construct a robust algorithm. Using this novel scheme, a partially premixed methane/air flame is sim...

2013
Hannele Yki-Järvinen Anna Kotronen

Regarding the question of how to use insulin in type 2 diabetes, a systematic review conforming to methods of the Cochrane collaboration was published in 2006 (1). This review included studies published in Medline until May 2004. The analysis compared insulin monotherapy with combination therapy with insulin and oral hypoglycemic agent (OHA) in previously insulin-naive patients. With use of the...

2013
D. M. Valiev V. Bychkov V. Akkerman C. K. Law

The present work investigates the spontaneous acceleration of premixed flames in micro-channels in the process of deflagration-to-detonation transition. It has recently been shown experimentally [Wu et al., Proc. Combust. Inst. 31 (2007) 2429], computationally [Valiev et al., Phys. Rev. E 80 (2009) 036317] and analytically [Bychkov et al., Phys. Rev. E 81 (2010) 026309] that the flame accelerat...

Journal: :Physics of Fluids 2022

The present study combines Large Eddy Simulation (LES) with System Identification (SI) to determine the Flame Transfer Functions (FTFs) of technically premixed flames that respond fluctuations upstream velocity as well equivalence ratio. Two variants obtain corresponding FTFs from numerically determined time series data are reported and compared experimental results. experiment does not measure...

Journal: :Optics letters 1991
J T Fourkas T R Brewer H Kim M D Fayer

Picosecond four-wave mixing experiments have been used to study collisions in a Na-seeded, premixed, methane-air flame. Population gratings are used to measure Na excited-state quenching collision rates, while polarization gratings are used to measure Na ground-state hyperfine coherence randomizing collision rates and overall Na diffusion rates, even though these processes are slower than the e...

2008
Pablo Gomez

This paper reports on the state-of-the-art of technologies for the design and fabrication of MEMS micro-mirrors. We discuss the major design issues, considerations, calculations and restrictions of micro mirrors. The materials employed for the reflective surfaces are described along with their properties. The materials used for the static and dynamic MEMS micro structures as well as the differe...

Journal: :Proceedings of the Combustion Institute 2021

High-fidelity Large Eddy Simulations (LES) are performed to study the effect of hydrogen injection on a lean turbulent CH4/Air premixed flame. An Analytically Reduced Chemistry (ARC) mechanism is used achieve detailed description CH4/Air-H2 chemistry. First, validation this kinetic scheme against GRI-Mech 3.0 presented considering both simplified and complex transport properties. When added mix...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده کشاورزی و دامپروری رضاییه 1392

به منظور بررسی تأثیر مواد محرک رشد و نیز روش های مختلف استعمال مواد محرک رشد ارگانیک بر عملکرد و اجزای عملکرد در ذرت سینگل کراس 704، آزمایشی در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه ارومیه به صورت فاکتوریل در قالب طرح بلوک های کامل تصادفی با سه تکرار به اجرا درآمد. مواد محرک رشد در چهار سطح (شاهد، magic crop،aminol_forte و micro rich) به عنوان فاکتور اول و تیمارهای مختلف نحوه استعمال به عنوان ...

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