A New Precursor Integral Method for Solving Space-Dependent Kinetic Equations in Neutronic and Thermal-Hydraulic Coupling System
المؤلفون المشاركون
Li, Fu
Wang, Yizhen
Cui, Menglei
Guo, Jiong
Niu, Jinlin
Liu, Baokun
Wu, Yingjie
Zhang, Han
المصدر
Science and Technology of Nuclear Installations
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-15، 15ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-11-03
دولة النشر
مصر
عدد الصفحات
15
الملخص EN
The accurate prediction of the neutronic and thermal-hydraulic coupling system transient behavior is important in nuclear reactor safety analysis, where a large-scale nonlinear coupling system with strong stiffness should be solved efficiently.
In order to reduce the stiffness and huge computational cost in the coupling system, the high-performance numerical techniques for solving delayed neutron precursor equation are a key issue.
In this work, a new precursor integral method with an exponential approximation is proposed and compared with widely used Taylor approximation-based precursor integral methods.
The truncation errors of exponential approximation and Taylor approximation are analyzed and compared.
Moreover, a time control technique is put forward which is based on flux exponential approximation.
The procedure is tested in a 2D neutron kinetic benchmark and a simplified high-temperature gas-cooled reactor-pebble bed module (HTR-PM) multiphysics problem utilizing the efficient Jacobian-free Newton–Krylov method.
Results show that selecting appropriate flux approximation in the precursor integral method can improve the efficiency and precision compared with the traditional method.
The computation time is reduced to one-ninth in the HTR-PM model under the same accuracy when applying the exponential integral method with the time adaptive technique.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Wu, Yingjie& Liu, Baokun& Zhang, Han& Guo, Jiong& Li, Fu& Niu, Jinlin…[et al.]. 2020. A New Precursor Integral Method for Solving Space-Dependent Kinetic Equations in Neutronic and Thermal-Hydraulic Coupling System. Science and Technology of Nuclear Installations،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1209480
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Wu, Yingjie…[et al.]. A New Precursor Integral Method for Solving Space-Dependent Kinetic Equations in Neutronic and Thermal-Hydraulic Coupling System. Science and Technology of Nuclear Installations No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1209480
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Wu, Yingjie& Liu, Baokun& Zhang, Han& Guo, Jiong& Li, Fu& Niu, Jinlin…[et al.]. A New Precursor Integral Method for Solving Space-Dependent Kinetic Equations in Neutronic and Thermal-Hydraulic Coupling System. Science and Technology of Nuclear Installations. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1209480
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1209480
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر