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根据陶瓷窑炉的热平衡计算过程,采用VB编程语言,编制了热平衡计算小软件,简化了计算过程,缩短了计算时间,提高了计算的准确性。本文通过计算实例,介绍其中的预热带、烧成带热平衡计算过程和操作界面。 相似文献
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采用VFP程序开发环境,对陶瓷相关计算进行编程开发。介绍了陶瓷计算系统中陶瓷基础计算、陶瓷数据维护、坯釉料配方计算等界面的设计,探讨陶瓷计算程序设计思路,成功开发了陶瓷计算系统,简化了计算过程,缩短了计算时间,为广大陶瓷科技工作者提供了一个良好的应用工具。 相似文献
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在火炬系统设计中,运用传统手工计算方法,无法全面准确地计算噪声和温度对周围设备及人员的影响,通过FlareSIM软件不仅可以帮助工程设计人员进行火炬系统的热辐射计算,还可以进行噪声和温度的计算,克服了传统计算中不能计算和计算不准确的缺点。以FlareSIM设计了某地脱水站放空气项目的高架火炬,通过热辐射计算图、噪声计算图和温度计算图进行综合计算分析得到了火炬的高度,明确了热辐射、噪声和温度对地面设备和人员的影响。为类似新建火炬系统的设计提供了依据和借鉴,方便了设计人员,加快了方案设计进度和准确性。 相似文献
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本文从量子化学计算的诞生出发,简述了常用的3种计算方法的优缺点和适用范围;从量子化学计算与计算机技术的关联出发,介绍了量子化学计算处理器对量子化学计算的贡献,以及GPU引发的新一轮量子化学革命,最后对量子化学计算的前景做了展望。 相似文献
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对壳体和接管承受不同压力载荷的多腔容器壳体上的特殊开孔结构的补强计算方法进行了分析和论证,并提出了计算模型,给出了等面积法补强的具体计算方法。通过与GB 150.3-2011常规开孔结构等面积法补强计算方法进行对比,找到了特殊开孔结构补强计算的简化方法,即把特殊开孔结构按常规开孔结构进行计算,并采用计算软件在电脑上计算,然后用接管多余面积计算差值ΔA2对计算结果进行处理。 相似文献
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多股流绕管式换热器的结构复杂,传热计算的难度较大。常见的计算方法是根据一些假定条件建立计算模型、进行数值求解,这种计算方法较复杂,不适合工程计算。而一些能用于工程计算的简便解析计算方法则存在迭代计算复杂、应用范围受限的缺点。本文列举了几种典型的多股流绕管式换热器的管束排列结构,分析了各自的结构特点;给出了多股流换热器的管板结构及相应的流体进出口接管方式,分析了各自的优缺点及应用场合。针对两种常规的多股流管束排列结构,即各股管程流体分层排布和同层排布,分别给出了适应于工程应用的简便传热计算方法。这两种计算方法将复杂的多股流绕管式换热器的计算分解为多个管程单股流绕管式换热器的计算,简化了计算过程。 相似文献
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单向复合材料弹性模量预测新式 总被引:5,自引:0,他引:5
王耀先 《玻璃钢/复合材料》1995,(4):26-31,28
根据复合材料单层的实际构造,提出了串并联组合模型,采用微观力学与宏观力学相结合的方法,推导出一组计算和复合材料弹性模量的新公式,其优点是:E1和v12,E2和G12的计算式形式对称,结构简单,计算容易,物理意义明确,我们把由世界上许多著名学者提出的多组预测公式和本文导出式计算所得的结果与国内外已发表的硼/环氧、碳/环氧、玻璃/环氧复合材料的实验数据相比较,结果表明:导出式比其他公式精确,更有价值, 相似文献
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N. A. Tyutin 《Refractories and Industrial Ceramics》2011,51(5):328-329
The question of devising formulas for the direct and inverse problems of designing a lining in a steady-state regime that
is in the form of a multi-layer wall is considered. The question involves a refinement of some of these formulas for the direct
problem, a reduction of the formulas of the direct problem to a rational form, and correction of the conditions under which
the formulas in both problems are applied. 相似文献
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W. A. B. Thomson 《Journal of the American Oil Chemists' Society》1979,56(3):386-388
Soy-based formulas and meat-based formulas are used as successful replacements for milk in the nutritional management of infants
who are, or are suspected to be allergic to milk. Used most widely are soy-based formulas which eliminate the symptoms and
ensure normal growth and well being of the infant. Soy-based formulas are made in both powdered and liquid forms, and the
trend during the past decade has been to use a soy protein isolate to reduce or eliminate the presence of carbohydrates which
cause flatulence and abnormal stooling. Details of the nutritional composition of soy-based infant formulas are discussed
together with the selection and processing of protein in order to minimize the presence of antinutritional factors. 相似文献
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R. G. Ackman 《Journal of the American Oil Chemists' Society》1966,43(6):385-389
From data obtained in this laboratory two empirical formulas have been developed which correlate polyunsaturated fatty acids
indicated by GLC analyses with iodine values of marine oils or their fatty acid methyl esters. These formulas have been applied
to data from the literature with good agreement. It is suggested that these formulas function only with fats having the basic
composition of marine lipids, which consist principally of saturated, monounsaturated and very highly unsaturated fatty acids.
The presence of modest amounts of dienoic and trienoic fatty acids such as are found in freshwater aquatic life and in land
animals makes the formulas inapplicable, suggesting their use to distinguish marine fish oils and lipids from other types.
The formulas could be particularly useful in technological applications of marine oils where a rapid and approximate knowledge
of amount of polyunsaturated fatty acids is desirable. 相似文献
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从经典过滤理论的效率计算公式入手,对普遍使用的捕集效率公式进行比较研究,分析由于选用公式的差异可能给最终的计算结果带来的误差,找出误差较小的公式。实验测量滤料的效率,与计算结果进行对比,判别误差的大小,并立足实验数据,采用公式拟合、多元回归的方法推导出各影响因素呈显函数关系的效率计算公式。 相似文献
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Hongying Yang Wanzi Xie Zhihui Yang Jinli Zhou Jingjing Zhang Zhikui Hui Ning Pan 《Color research and application》2019,44(5):730-739
Color depth is difficult to evaluate; however, it plays an important role in the assessments of color fastness, dyeing properties, and so on. The subjective evaluation of color depth is prone to be affected by people, environment, etc. As for objective evaluation, there are more than 10 formulas, which confuses the user. In this study, a theoretically designed new formula is inspected through 18195 chips with 24 grades of color depth from the SINO COLOR BOOK, with the help of four preferable objective evaluation formulas. The specimens were measured using an X‐Rite Color i7 spectrophotometer, and all their depth values were calculated and statistically analyzed by programming MATLAB. Of the five formulas, the new formula yields the best outcome of variance coefficients (CVs) but the worst linearity, with a correlation coefficient R = 0.976. It was then theoretically revised to two other formulas, one obtains the highest linearity (R = 0.9997) and the third CV, and the other gains the second linearity (R = 0.9984) and the second CV among the seven formulas. Besides, the three new formulas are not as sensitive as the others to the changes of Hue and Chroma. In general, the new revised formulas show potential and need to be further evaluated. 相似文献
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根据已发表的镀锌层黑色钝化的铜盐法、银盐法及铜银结合法等类型的黑色钝化的参考配方进行了对比试验,并就其中较为理想的钝化配方的成分含量及其作用、操作条件的影响做了细致的分析,并对钝化液配制时的注意事项予以说明。 相似文献
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丁德承 《硫磷设计与粉体工程》2009,(5):1-7
在流化床干燥器(或冷却器)、气流干燥器、流化床吸收器、流化床反应器及气力输送等的工程设计中,颗粒物料的临界速度、沉降速度是主要的工艺参数,计算公式多,但这些公式的局限性较大.介绍了临界速度、沉降速度和操作速度的常用计算公式和计算实例,认为用普拉诺夫斯基修正式进行工程计算不需要进行区间判断,适用于床层孔隙率ε=0.4~1.0的任何场合. 相似文献