کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7156709 1462677 2016 35 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A non-intrusive acceleration technique for compressible flow solvers based on dynamic mode decomposition
ترجمه فارسی عنوان
یک روش شتاب غیر قابل نفوذ برای حل کننده های جریان فشاری براساس تجزیه حالت پویا
کلمات کلیدی
دینامیک سیالات محاسباتی، جریان فشرده، شتاب دهنده حل، تجزیه حالت دینامیک،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
چکیده انگلیسی
There are several well-established methods to achieve solver speed-up for finite-volume solvers for compressible flows. These methods are more or less difficult to implement and more or less suitable for implementation in a parallel unstructured type of solver. This article presents a non-intrusive solver acceleration technique applicable for steady-state problems. The proposed technique is based on Dynamic Mode Decomposition (DMD) and does not depend on data format or mesh structure and is thus as straightforward to implement in an unstructured parallel code as in a structured sequential one. The main idea behind the method is that it is possible to use the information available in global flow-field modes to find a correction that will bring the solution closer to a steady-state condition. The DMD-based acceleration technique has been implemented in a massively parallel block-structured finite-volume Navier-Stokes solver for compressible flows and tested on a turbine cascade case with promising results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Fluids - Volume 133, 15 July 2016, Pages 32-42
نویسندگان
,