نتایج جستجو برای: burning rate
تعداد نتایج: 976615 فیلتر نتایج به سال:
Deflagrations in porous energetic materials are characterized by regions of two-phase flow, where, for sufEciently large flow velocities, temperature-nonequilibration effects can significantly affect the overaI1 burning rate. In the present work, we analyze a two-temperature model of defiagrations in confined porous propellants that exhibit a bubbling melt layer at their surfaces. For appropria...
The threat of helicopters, military and civilian aircrafts by IR-guided missiles (heat seeking missiles) has always been a major one.One of the most effective methods to overcome this threat is an attempt to decoy the missile by the flares that are released by the aircraft (the target of the missile). .Certain compositions have the capability to form a pyrotechnic flare formulation that radiate...
In this study, different flow analysis models in solid rocket motor are introduced. Amongst these models, some are not capable of predicting the effects of significant phenomena such as erosive burning and longitudinal acceleration. In order to consider these effects on the internal ballistic, a quasi-one-dimensional model was developed which employs generalized flow equations. A non-viscous an...
ABSTRACT The focus of this study is to quantify the controlling mechanisms, which increases burning rate a pool fire using Flame RefluxerTM. Part RefluxerTM, exposed and heated up transferring heat fuel layer it extends. This enhances conventional transfer that occurs only through surface by from an in-depth liquid. Both sensible vaporization are supplied at increased rates submerged material. ...
[1] Open fire biomass burning and domestic biofuel burning (e.g., cooking, heating, and charcoal making) algorithms have been incorporated into a terrestrial ecosystem model to estimate CO2 and key reactive GHGs (CO, NOx, and NMHCs) emissions for the year 2000. The emissions are calculated over the globe at a 0.5 0.5 spatial resolution using tree density imagery, and two separate sets of data e...
The present study was conducted to examine photosynthetic characteristics of three dominant grass species (Agropyron cristatum, Leymus chinensis, and Cleistogenes squarrosa) and their responses to burning and nitrogen fertilization in a semiarid grassland in northern China. Photosynthetic rate (P(n)), stomatal conductance (g(s)), and water use efficiency (WUE) showed strong temporal variability...
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