排序方式： 共有4条查询结果，搜索用时 31 毫秒
1
1.
Investigation of oil-air two-phase mass flow rate measurement using Venturi and void fraction sensor 总被引：6，自引：0，他引：6
INTRODUCTION Accurate measurement of multiphase fluids flow rates in the petroleum industry is of great importance. The most reliable measurement technique for multi-phase flow is separating the mixture and using con-ventional devices for measuring single-phase flow. However, in many cases the separation is not practical from both technical and economical points of view. An alternative solution is the multiphase flow me-tering system, usually consisting of a combination of devices for ph… 相似文献
2.
Design of ERT system 总被引：2，自引：0，他引：2
INTRODUCTION Electrical resistance tomography (ERT) is a technique producing images based upon variations in conductivity, and has great potential in process ap- plications (Tapp et al., 2003). In an ERT system, current is injected to a pair of drive electrodes and voltage measurements are taken between sense elec- trode pairs, yielding resistance information for image reconstruction (Cilliers et al., 2001). Traditional ERT systems usually use high fre- quency sinusoidal waveforms as … 相似文献
3.
Voidage measurement based on genetic algorithm and electrical capacitance tomography 总被引：1，自引：0，他引：1
INTRODUCTION Two-phase flow exists widely in chemical, pe- troleum and metallurgical industries. The voidage is one of the most important parameters of two-phase flow because the measurement of the voidage is im- portant for safety, environmental protection, energy conservation and quality assurance in industry (Hewitt, 1978; Lin, 1992). Although many voidage measurement methods have been proposed, it is still difficult to measure the voidage due to the complexity of the characteristics o… 相似文献
4.
黄志尧 《时事(时事报告大学生版)》2006,(5)
罗素说:“人生是河。”那么,什么才是这条生命长河中最重要的事情呢?现在的有些大学生简直视自己的生命如草芥,轻则自虐自己,还口口声声称是“张扬个性”;重则为失恋 相似文献
1