Abstract
The design and engineering of a wetted wall cavity are in progress at UCLA as a part of an inertial fusion energy (IFE) reactor study led by McDonnell Douglas. The authors outline the design methodology, analyze the thermal, mechanical, nuclear and energy conversion attributes of the cavity, and present possible solutions to outstanding problems. The choice of a wetted wall cavity was made following an assessment of previous IFE cavity designs and evaluation of a number of key design goals, including: safety and environmental attractiveness, reliability, ease of maintenance, high thermal cycle efficiency, and long component lifetime. Design of the present wetted wall concept considers several important issues, including: (1) limits on cavity clearing time due to the requirement to conduct heat out radially; (2) film flow uniformity, wetting, and drainage; and (3) mechanical response of the first wall system.< >