flame angle 中文意思是什麼
flame angle
解釋
火焰角-
It is found that the liquid kerosene of injection upstream cavity could finish the process of atomization and evaporation in short distance, and enter into cavity through convection. aft wall is the primarily area of flame holding in cavity, and the only area when near the lean blowout limit, flame in area of fore wall are spread from it. cavity shear layer in reaction flow angle greatly to the main flow direction, and couldn ’ t reattach to aft wall anymore, it appears great difference in characteristics of cavity flowfield between non - reaction and reaction state
研究發現:凹腔上游噴注的液體燃料能夠迅速霧化、蒸發，並在較短距離內依靠對流輸運過程進入凹腔內部;凹腔後壁始終是凹腔火焰駐留的主要區域，在貧油極限時，也是唯一區域，並存在明顯的火焰由後壁向前壁的傳播過程;燃燒狀態下的凹腔剪切層以較大角度向下游主流發展，不再附著于凹腔後壁，與冷流中的凹腔流場特徵相差較大。 -
It is very difficult to analyze flame radiation in the cylinder of a diesel engine by theoretical method since flame radiation is a function of many parameters, such as the combustion process, the geometrical description of the chamber, the soot formation and oxidation processes, the soot radiant temperature and soot absorption coefficient. the radiant property of the flame in a cylinder is dependent on the combustion process. but the thermodynamic state of real engine cycles can be analyzed from the pressure - volume diagrams in the cylinder. thus a new thermodynamic computational model is set up for the flame radiation in the cylinder of a diesel engine based on the indirect relationship between the flame radiation and the pressure - volume diagram of the combustion process in this paper. the flame radiant heat flux in the cylinder of a di diesel engine is calculated with the variation of crank angle by this model. compared with measured values, the result of the computational values shows the model is available to represent the effects of flame radiation
柴油機缸內的火焰輻射受諸多因素的影響，用理論分析法來確定它是相當困難的，由於柴油機缸內火焰輻射特性依賴于缸內的燃燒過程，而燃燒過程中的實際熱力狀態又可用示功圖來分析，因此藉助於火焰輻射與缸內熱力參數之間的這種間接關系，建立了一種計算柴油機缸內火焰輻射傳熱的新模型，利用該模型對一臺直噴柴油機缸內火焰輻射熱流量隨曲軸轉角的變化情況進行了計算，將計算結果與實測結果進行了比較，表明該模型能較好預測缸內火焰輻射傳熱量。 -
Abstract : an analysis on the damage of flame arrester of oil tank has been made from its structure as well as daily care. countermeasures against its disability have been presented, that is, casting the two semi - casing into one piece, leaving out the intermediat flanges, thickening the casing, and increasing the casting round - angle between the flanges and casing. in this way, the strength of casing can be enhance and local stress will be decreased. in addition, in order to enlongate the service life, the operating frequency of flame arrester should be properly reduced in daily care
文摘:從設計結構及維護保養的角度分析了儲油罐阻火器損壞的原因，並提出了相應的改進措施，即在結構方面可以將阻火器外殼鑄為一體，省去中間法蘭，增加殼體厚度，加大法蘭與殼體之間的鑄造圓角，以增加強度減少局部應力:在維護保養方面，應適當減少操作次數，延長阻火器的使用壽命。 -
The flame development angle is less than that of lpg and greater than that of gasoline
二甲醚復合燃料的燃燒速度小於汽油，大於lpg 。火焰發展角小於lpg ，大於汽油。
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