A numerical model for swirl flow cooling in high-heat-flux particle beam targets and the design of a swirl-flow-based plasma limiter

Nuclear engineering and design/fusion : an international journal devoted to the thermal, mechanical, materials, structural, and design problems of fusion energy Pub Date : 1986-01-01 DOI:10.1016/S0167-899X(86)80020-9

S.L. Milora, S.K. Combs, C.A. Foster

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引用次数: 29

Abstract

An unsteady, two-dimensional heat conduction code has been used to study the performance of swirl-flow-based neutral particle beam targets. The model includes the effects of two-phase heat transfer and asymmetric heating of tubular elements. The calorimeter installed in the Medium Energy Test Facility, which has been subjected to 30-s neutral beam pulses with incident heat flux intensities of ⩾ 5 kW/cm², has been modeled. The numerical results indicate that local heat fluxes in excess of 7 kW/cm² occur at the water-cooled surface on the side exposed to the beam. This exceeds critical heat flux limits for uniformly heated tubes with straight flow by approximately a factor of 5. The design of a plasma limiter based on swirl flow heat transfer is presented.

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高热流通量粒子束靶内旋流冷却的数值模型及基于旋流的等离子体限制器设计

采用非定常二维热传导程序研究了中性粒子束靶的性能。该模型考虑了管状元件的两相传热和非对称加热的影响。安装在中能测试设施中的量热计已经建模，该量热计已经受到入射热流强度大于或等于5 kW/cm2的30秒中性束脉冲的影响。数值结果表明，在暴露于光束一侧的水冷表面出现了超过7 kW/cm2的局部热流。这超过了均匀加热直流管的临界热流极限，大约高出5倍。介绍了一种基于涡流传热的等离子体限制器的设计。

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Nuclear engineering and design/fusion : an international journal devoted to the thermal, mechanical, materials, structural, and design problems of fusion energy

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