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burn rate
相关语句
  燃速
     Combustion Theories of Porous Solid Propellants of Ultra-high Burn Rate
     多孔超高燃速推进剂的燃烧理论
短句来源
     Thickening agent NJ 4 was of high efficacy and it can improved the stability of pasty propellant. Combustion catalyst FC 1 was designed,synthesized and used,the burn rate of pasty propellant was increased from 15mm/s to over 50mm/s,and pressure exponent decreased from 0.71 to about 0.4.
     燃烧调节剂 FC-1能有效改善配方的点火和燃烧性能 ,拓宽了燃速范围 ( 6 .86 MPa下 ,燃速从1 5 mm/s指高到 1 5 mm/s以上 ) ,显著降低了燃速压强指数( 2 .94~ 8.83MPa下 ,压强指数由 0 .71降至 0 .4 )。
短句来源
     The results show that ferrocene derivant (RMT) can effectively enhance burn rate of propellants and reduce its pressure exponent under high pressures;
     结果表明:二茂铁衍生物(RMT)能大幅提高推进剂燃速和降低高压燃速压强指数。
短句来源
     The effect of foundamental formulation change on burn rate was tested systematically by adjusting the contents of foundational composition of NC,NG and RDX in composite modified double base propellant.
     通过调节含砒)X改性双基推进剂基本配方组分NC、NG、RDX百分含量的试验,系统地测试了基本配方组分变化对燃速的影响。
     (3) Effort is made to elucidate the mechanism of propellant burn rate enhancement phenomena by the action of plasma.
     (3) 对火药在等离子体作用下的燃速电增强现象的机理进行了解释。
短句来源
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  “burn rate”译为未确定词的双语例句
     The results show that the high pressareexponent of burn rate can increase the sensitivity of the initial conditions on interiorballistic properties.
     结果表明,高压力指数能增加射击起始条件等参量对弹道性能的敏感性,而且随着高压力指数的增加及其区间的扩大而加剧.
短句来源
     Study on Mechanism of Burn Rate Enhancement of Solid Propellant with Plasma and Modeling of Multidimensional Multiphase Flow
     固体发射药燃速的等离子体增强机理及多维多相流数值模拟研究
短句来源
     The Influence of Nitramine Propellant's Pressure Exponent of Burn Rate on Interior Ballistic Properties
     硝胺发射药燃速压力指数对内弹道性能的影响
短句来源
     CALCULATING THE MASS BURN RATE OF SPARK-IGNITION ENGINES BY QUASI-DIMENSIONAL TURBULENT ENTRAINMENTMODEL
     利用准维卷吸模型计算汽油机的质量燃烧率
短句来源
     (2) In closed bomb experiments, we find two kinds of burn rate enhancement modes for different kinds of propellant.
     (2) 密闭爆发器实验发现对不同种类及表面特性的火药存在放电期间电增强和放电后效期电增强两种电增强模式。
短句来源
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  相似匹配句对
     Burn's and C.
     BurnS和C.
短句来源
     Analysis of Mortality Rate of 3617 Burn Patients
     3617例烧伤病人病死率分析
短句来源
     Relationship between Burn and the Rate of Thermal Radiation in Rat
     大鼠皮肤模拟光辐射烧伤与光冲量率
短句来源
     BURN AND FEVER
     烧伤与发热
短句来源
     The infection rate of AM.
     老感染区细胞间的菌丝顶端也可见泡囊形成。
短句来源
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  burn rate
Above 4 MPa, the observed burn rate for iron is proportional to the sample dimension, L, as L-0.7.
      
These rate reductions occur because the certified stoves burn cleaner (less pollutant formation per kg of wood burned) and the average burn rate of certified stoves in field use is less than the average burn rate of conventional stoves.
      
The results of the thermal decomposition and closed-bomb tests show that the microstructural damage in the propellant affects its decomposition and burn rate.
      
Ultimately, burn rate or explosive sensitivity could yield out-of specification results rendering the propellant useless.
      
Video timing was used to determine the burn time and burn rate was calculated by dividing the known fuel thickness by the burn time.
      
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This paper presents a discription of a mathematical simulation of the turbocharged two-stroke diesel engine. The differential equations of the process are derived and the mathematical models of all thermodynamic systems are given. The burning rate is calculated according to the data of the heat release obtained from the pressure-time diagrams with the Lagrange interpolation formula. The instantaneous heat transfer, in cylinder is calculated by the empirical correlation given by Woschni. In the displacement...

This paper presents a discription of a mathematical simulation of the turbocharged two-stroke diesel engine. The differential equations of the process are derived and the mathematical models of all thermodynamic systems are given. The burning rate is calculated according to the data of the heat release obtained from the pressure-time diagrams with the Lagrange interpolation formula. The instantaneous heat transfer, in cylinder is calculated by the empirical correlation given by Woschni. In the displacement scavenging model the effect of the short circuiting is considered. The process occuring in the exhaust manifold is computed by the model for filling and emptying process. The turbocharger turbine is analyzed on a quasi-steady basis with given mass flow-expansion ratio characteristics and efficiency-velocity ratio curves. Steady flow is assumed and experimental performance is used to model the compressor. For the solution of differential equations on digital computer, the predictor-corrector method is combined with Wegstein method.

本文结合二冲程废气涡轮增压柴油机建立了对柴油机工作过程进行数学模拟的微分方程式,确定了各热力系统的数学模型:缸内的燃烧率是利用实测的示功图算出的放热率用插值法进行计算的。缸内的瞬时传热率计算采用了G.Woschni提出的经验公式和数据。扫气过程采用了分层扫气模型并考虑了短路的影响。排气管内的过程是用容积法计算的。增压器的配合运行是利用特性曲线在准稳定的基础上用插值法进行计算的。在数值计算中采用了PCM法(预校法)和Wegstien法结合使用的方法。

In studying the combustion of Double Base (D.B) propellants a coulometric nitrogen oxides detector, differential scanning calorimetry ( DSC ) and a long-focus microphotographic camera were used to determine respectively the amounts of NO2, NO the dissociation heat Q and the activation energy E and the dark zone thickness L. The results are as follows. decreaseswherePropellant A catalyzed high burning rate propellantPropellant O noncatalyzed propellant for contrastPropellant B catalyzed plateau propellantwhere...

In studying the combustion of Double Base (D.B) propellants a coulometric nitrogen oxides detector, differential scanning calorimetry ( DSC ) and a long-focus microphotographic camera were used to determine respectively the amounts of NO2, NO the dissociation heat Q and the activation energy E and the dark zone thickness L. The results are as follows. decreaseswherePropellant A catalyzed high burning rate propellantPropellant O noncatalyzed propellant for contrastPropellant B catalyzed plateau propellantwhere F represents the peak area per 1mg propellantIt can be seen from the analysis of the above results that in the combustion process of the double base propellant there must be a gas-solid heterogeneous reaction between NO2 and the propellant, and this reaction is an important step that affects the combustion rate of the propellant. Rate increasing catalysts will catalyze this reaction, as a result, the burning rate can be increased greatly.Inhibition of such a reaction by plateau catalysts is one of the factors that produce the plateau.Both sets of catalysts are effective in the dark zone, but they have no remarkable effect on the burning rate.

本文选用库仑法测定NO_2、NO,DSC测定分解热(?),活化能(?),长焦距显微摄影测暗区厚度L。对三种推进剂:空白推进剂O,增速推进剂A,平台推进剂B进行了研究。结果如下(以F表示1mg推进剂放出NO_2峰面积) NO_2/NO F_2mg/F_(0.4)mg (?)mcal/mg (?)大卡/克分子 L 推进剂A 7.1% 0.63 478 35 略减薄 推进剂O 11.6% 0.70 448 40 推进剂B 14% 0.80 318 57 大幅度减薄 由以上结果分析认为在双基推进剂燃烧过程中有NO_2+推进剂这一气固异相反应存在。它与燃烧速度的关系密切。增速催化剂对此反应起催化作用,因而可大幅度提高燃速。平台催化剂抑制此反应,是产生平台的因素之一。两组催化剂对暗区均起催化作用。但由此而产生的暗区厚度的变化对燃烧速影响不大。

In this paper analysis are given to the testing results of dynamic properties of fluidized bed combustion using low grade coal with broad size distribution and fly ash with narrow size distribution. The conditions of ignition of fuel particles and the factors influencing burning rate in fluidized bed are investigated. The construction principles of the industrial boiler with two fluidized beds operating in parallel are briefly described. The results of heat balance tests of twin-bed boiler as contrasted...

In this paper analysis are given to the testing results of dynamic properties of fluidized bed combustion using low grade coal with broad size distribution and fly ash with narrow size distribution. The conditions of ignition of fuel particles and the factors influencing burning rate in fluidized bed are investigated. The construction principles of the industrial boiler with two fluidized beds operating in parallel are briefly described. The results of heat balance tests of twin-bed boiler as contrasted with single bed boiler are briefly given. Some criteria for design and operation of fluidized bed boilers are also discussed.

本文对宽筛分劣质固体燃料和窄筛分飞灰的沸腾燃烧过程动力特性的试验结果作了分析,并对燃料颗粒在沸腾床中的着火条件和燃烧速度的控制因素进行了初步探讨;同时对双床并联运行工业沸腾炉的结构原则和锅炉的热平衡对比试验结果作了简介。提出了沸腾燃烧锅炉设计和运行的一些关键问題。

 
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