کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6932813 | 867572 | 2014 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new level set model for multimaterial flows
ترجمه فارسی عنوان
یک مدل مجموعه ای جدید برای جریان های چند رسانه ای
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کلمات کلیدی
سطح تنظیم، چند رسانه ای، دینامیک سیالات،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
We propose a new level set model for representing multimaterial flows in multiple space dimensions. Instead of associating a level set function with a specific fluid material, the function is associated with a pair of materials and the interface that separates them. A voting algorithm collects sign information from all level set functions and determines material designation. To represent a general M-material configuration, M(Mâ1)/2 level set functions need to be accounted for; problems of practical interest use far fewer functions, as not all pairs of materials share an interface, and level-set functions that coincide are grouped together. Under this model, regions of potential material ambiguity, i.e. overlaps or vacuum, are markedly reduced in size: in 2D, ambiguous regions are points, as opposed to lines in material-based level set models; in 3D, they are lines as opposed to surfaces. The model produces excellent results without the need for reinitialization, thereby avoiding additional computational costs and preventing excessive numerical diffusion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 262, 1 April 2014, Pages 1-16
Journal: Journal of Computational Physics - Volume 262, 1 April 2014, Pages 1-16
نویسندگان
David P. Starinshak, Smadar Karni, Philip L. Roe,