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首页> 外文会议>International Mechanical Engineering Congress and Exposition >(V07AT08A064)IMPROVEMENT IN PRECISION, ACCURACY, AND EFFICIENCY IN STANDARDIZING THE CHARACTERIZATION OF GRANULAR MATERIALS
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(V07AT08A064)IMPROVEMENT IN PRECISION, ACCURACY, AND EFFICIENCY IN STANDARDIZING THE CHARACTERIZATION OF GRANULAR MATERIALS

机译：（V07AT08A064）在标准化粒状材料表征方面的精度，精度和效率方面的改进

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摘要

Useful prediction of the kinematics, dynamics, and chemistry of a system relies on precision and accuracy in the quantification of component properties, operating mechanisms, and collected data. In an attempt to emphasize, rather than gloss over, the benefit of proper characterization to fundamental investigations of multiphase systems incorporating solid particles, a set of procedures were developed and implemented for the purpose of providing a revised methodology having the desirable attributes of reduced uncertainty, expanded relevance and detail, and higher throughput. Better, faster, cheaper characterization of multiphase systems result. Methodologies are presented to characterize particle size, shape, size distribution, density (particle, skeletal and bulk), minimum fluidization velocity, void fraction, particle porosity, and assignment within the Geldart Classification. A novel form of the Ergun equation was used to determine the bulk void fractions and particle density. Accuracy of properties-characterization methodology was validated on materials of known properties prior to testing materials of unknown properties. Several of the standard present-day techniques were scrutinized and improved upon where appropriate. Validity, accuracy, and repeatability were assessed for the procedures presented and deemed higher than present-day techniques. A database of over seventy materials has been developed to assist in model validation efforts and future designs.
机译：的运动学，动力学，以及系统的化学的有用的预测依赖于精确度和准确度在组件属性，操作机构，和所收集的数据的量化。在试图强调，而不是粉饰，适当的表征，以纳入固体颗粒的多相系统的基础研究的好处，一套程序，开发并提供具有减少不确定性的期望属性修订方法的目的实现，扩展相关性和细节，更高的吞吐量。更好，更快，多相体系的便宜，表征。方法被提出来表征颗粒大小，形状，大小分布，密度（颗粒，骨骼和散装），最小流化速度，空隙率，粒子的孔隙率，和转让的Geldart分类内。的Ergun方程的一种新颖的形式使用，以确定散装空隙分率和颗粒密度。的性能表征方法的准确性进行了验证上之前测试未知性质的材料公知的性质的材料。几个标准现今技术仔细检查和适当其中一旦提高。有效性，准确性和可重复性进行评估所呈现的程序和认为比当今技术更高。年过七旬的材料数据库已经发展到协助模型验证的努力和未来的设计。

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