DETERMINATION OF MOISTURE DIFFUSIVITY IN POROUS-MEDIA USING SCANNING NEUTRON RADIOGRAPHY

被引：93

作者：

PEL, L

KETELAARS, AAJ

ADAN, OCG

VANWELL, AA

机构：

[1] EINDHOVEN UNIV TECHNOL,DEPT CHEM ENGN TCP,5600 MB EINDHOVEN,NETHERLANDS

[2] DELFT UNIV TECHNOL,INST INTERFACULTAIR REACTOR,2629 JB DELFT,NETHERLANDS

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1993年 / 36卷 / 05期

关键词：

D O I：

10.1016/S0017-9310(05)80095-X

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A technique for measuring moisture concentration profiles based on scanning neutron radiography is presented. With this technique moisture concentration profiles have been measured during drying of brick and kaolin clay. The isothermal moisture diffusivity as a function of moisture content could be determined directly from these profiles. An error analysis shows that the minimum spatial resolution for scanning should be 0.5 mm. If this condition is not satisfied, it is not possible, for example, to detect the minimum in the moisture diffusivity in the case of a receding drying front.

引用

页码：1261 / 1267

页数：7