Improving the Accuracy of Fictitious Domain Method Using Indicator Function from Volume Intersection
المؤلفون المشاركون
Chai, Guoliang
Su, Junwei
Wang, Le
Yu, Chunlei
Zhang, Yigen
Gu, Zhaolin
المصدر
Advances in Mathematical Physics
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-18، 18ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-06-26
دولة النشر
مصر
عدد الصفحات
18
التخصصات الرئيسية
الملخص EN
Fictitious domain method (FDM) is a commonly accepted direct numerical simulation technique for moving boundary problems.
Indicator function used to distinguish the solid zone and the fluid zone is an essential part concerning the whole prediction accuracy of FDM.
In this work, a new indicator function through volume intersection is developed for FDM.
In this method, the arbitrarily polyhedral cells across the interface between fluid and solid are located and subdivided into tetrahedrons.
The fraction of the solid volume in each cell is accurately computed to achieve high precision of integration calculation in the particle domain, improving the accuracy of the whole method.
The quadrature over the solid domain shows that the newly developed indicator function can provide results with high accuracy for variable integration in both stationary and moving boundary problems.
Several numerical tests, including flow around a circular cylinder, a single sphere in a creeping shear flow, settlement of a circular particle in a closed container, and in-line oscillation of a circular cylinder, have been performed.
The results show good accuracy and feasibility in dealing with the stationary boundary problem as well as the moving boundary problem.
This method is accurate and conservative, which can be a feasible tool for studying problems with moving boundaries.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Chai, Guoliang& Su, Junwei& Wang, Le& Yu, Chunlei& Zhang, Yigen& Gu, Zhaolin. 2019. Improving the Accuracy of Fictitious Domain Method Using Indicator Function from Volume Intersection. Advances in Mathematical Physics،Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1118957
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Chai, Guoliang…[et al.]. Improving the Accuracy of Fictitious Domain Method Using Indicator Function from Volume Intersection. Advances in Mathematical Physics No. 2019 (2019), pp.1-18.
https://search.emarefa.net/detail/BIM-1118957
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Chai, Guoliang& Su, Junwei& Wang, Le& Yu, Chunlei& Zhang, Yigen& Gu, Zhaolin. Improving the Accuracy of Fictitious Domain Method Using Indicator Function from Volume Intersection. Advances in Mathematical Physics. 2019. Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1118957
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1118957
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