Wen-Jie Zhou, Xiao-Ju Liu, Xiao-He Wu, Bang Li, Qi-Qi Shi, Hao-Chen Fan, Yan-Jie Yang, Guo-Qiang Li
{"title":"Calculation and prediction of divertor detachment via impurity seeding by using 1D model","authors":"Wen-Jie Zhou, Xiao-Ju Liu, Xiao-He Wu, Bang Li, Qi-Qi Shi, Hao-Chen Fan, Yan-Jie Yang, Guo-Qiang Li","doi":"10.1088/1674-1056/ad426a","DOIUrl":null,"url":null,"abstract":"\n Achieving the divertor detachment helps to alleviate excessive heat load and sputtering problems on the target plates, thereby prolonging the lifetime of divertor components for fusion devices. In order to provide a rapid but relatively reliable prediction of plasma parameters along the flux tube for future devices design, a one-dimensional (1D) modeling code for the impurity seeded detached divertor operational point has been developed based on the Python language, which is a fluid model based on the previous work.[1] The experimental observation of the onset of divertor detachment by neon (Ne) and argon (Ar) seeding in EAST is well reproduced by using the 1D modeling code. The comparison of the 1D modeling and 2D simulation by SOLPS-ITER code for CFETR detachment operation with Ne and Ar seeding also shows good consistency. The predictions of the radiative power loss and requirement of the corresponding impurity concentration for achieving divertor detachment via different impurity seeding for the high heating power scenarios on EAST and CFETR Phase II by the 1D model are also presented. Based on the predictions, the optimized parameter space for divertor detachment operation on EAST and CFETR has also been determined. Such a simple but reliable 1D model can provide a reasonable parameter inputs for a detailed and accurate analysis by 2D or 3D modeling tools through rapid parameter scanning.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":"20 16","pages":""},"PeriodicalIF":16.4000,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1088/1674-1056/ad426a","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Achieving the divertor detachment helps to alleviate excessive heat load and sputtering problems on the target plates, thereby prolonging the lifetime of divertor components for fusion devices. In order to provide a rapid but relatively reliable prediction of plasma parameters along the flux tube for future devices design, a one-dimensional (1D) modeling code for the impurity seeded detached divertor operational point has been developed based on the Python language, which is a fluid model based on the previous work.[1] The experimental observation of the onset of divertor detachment by neon (Ne) and argon (Ar) seeding in EAST is well reproduced by using the 1D modeling code. The comparison of the 1D modeling and 2D simulation by SOLPS-ITER code for CFETR detachment operation with Ne and Ar seeding also shows good consistency. The predictions of the radiative power loss and requirement of the corresponding impurity concentration for achieving divertor detachment via different impurity seeding for the high heating power scenarios on EAST and CFETR Phase II by the 1D model are also presented. Based on the predictions, the optimized parameter space for divertor detachment operation on EAST and CFETR has also been determined. Such a simple but reliable 1D model can provide a reasonable parameter inputs for a detailed and accurate analysis by 2D or 3D modeling tools through rapid parameter scanning.
实现分流器分离有助于减轻靶板上过大的热负荷和溅射问题,从而延长聚变装置分流器部件的使用寿命。为了给未来的装置设计提供快速但相对可靠的通量管沿线等离子体参数预测,我们基于 Python 语言开发了杂质种子脱离憩室运行点的一维(1D)建模代码,该代码是在前人工作的基础上建立的流体模型。[1] 使用一维建模代码很好地再现了 EAST 中氖(Ne)和氩(Ar)种子引起憩室脱离的实验观察结果。一维建模与 SOLPS-ITER 代码对氖和氩种子 CFETR 脱离运行的二维模拟的比较也显示出很好的一致性。此外,还介绍了一维模型对 EAST 和 CFETR II 阶段高加热功率情况下通过不同杂质播种实现分流器分离的辐射功率损耗和相应杂质浓度要求的预测。根据预测结果,还确定了 EAST 和 CFETR 上分流器脱落运行的优化参数空间。这样一个简单而可靠的一维模型可以为二维或三维建模工具通过快速参数扫描进行详细而准确的分析提供合理的参数输入。
期刊介绍:
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.