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利用SOLPS5.0模拟研究东方超环托卡马克(EAST)高约束模式时的刮削层等离子体.在高约束模式放电实验参数(第36291炮)的限制下,通过调整上游区径向反常输运系数来实现高约束模式模拟,在上游电子密度和温度与实验符合的条件下能够很好地进行下游区模拟.在实现高约束模拟的基础上又分别研究了漂移项对偏滤器靶板能流不对称性的影响和上游能流衰减宽度对靶板能流密度峰值的影响.通过模拟发现,漂移是导致EAST放电内外靶板不对称性的主要原因,增大上游能流衰减宽度可以明显降低入射到靶板的峰值热流,并且偏滤器区辐射以及与中性粒子的相互作用减小了能流的衰减宽度对达到靶板能流的影响.
The SOLPS5.0 simulation was used to study the scraped-layer plasmas in the east confinement Tokamak (EAST) high confinement mode.According to the experimental data of high confinement mode discharge (No.36929), the radial anomalous transport Coefficient to achieve high constraint mode simulation in the upstream electron density and temperature conditions consistent with the experiment can be well under the downstream zone simulation.Based on the realization of high constraint simulation and the drift of the divertor target plate energy flow The influence of asymmetry and the attenuation width of the upstream energy flow on the peak energy density of the target plate were investigated.It was found by simulation that the drift was the main reason for the asymmetry of the target plate inside and outside the EAST discharge.Improving the attenuation width of the upstream energy flow could be significantly reduced The peak heat flux incident on the target plate, and the divertor zone radiation and the interaction with neutral particles reduce the effect of the attenuation width of the energy flow on reaching the target plate energy flow.