Review of free-surface MHD experiments and modeling.

Molokov, S. ; Reed, C. B.

Technical Information Center Oak Ridge Tennessee

关键词: Magnetohydrodynamics;    Fluid dynamics;    First wall;    Design;    Efficiency;   

RP-ID  :  DE2001757509

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

This review paper was prepared to survey the present status of analytical and experimental work in the area of free surface MHD and thus provide a well informed starting point for further work by the Advanced Limiter-diverter Plasma-facing Systems (ALPS) program. ALPS were initiated to evaluate the potential for improved performance and lifetime for plasma-facing systems. The main goal of the program is to demonstrate the advantages of advanced limiter/diverter systems over conventional systems in terms of power density capability, component lifetime, and power conversion efficiency, while providing for safe operation and minimizing impurity concerns for the plasma. Most of the work to date has been applied to free surface liquids. A multi-disciplinary team from several institutions has been organized to address the key issues associated with these systems. The main performance goals for advanced limiters and diverters are a peak heat flux of >50 MW/m(sup 2), elimination of a lifetime limit for erosion, and the ability to extract useful heat at high power conversion efficiency ((approximately)40%). The evaluation of various options is being conducted through a combination of laboratory experiments, modeling of key processes, and conceptual design studies.