A DIRECT SPECTRAL SOLVER OF THE 2D/3D UNSTEADY STOKES PROBLEM - APPLICATION TO THE 2D SQUARE DRIVEN CAVITY

被引：0
|
作者：
BATOUL, A [1 ]
KHALLOUF, H [1 ]
LABROSSE, G [1 ]
机构：
[1] UNIV PARIS 11,CTR ORSAY,INFORMAT MECAN & SCI INGN LAB,CNRS,F-91405 ORSAY,FRANCE
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II | 1994年 / 319卷 / 12期
关键词：
D O I：
暂无
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
This paper presents, firstly, an original direct solver (named ''projection-diffusion'') of the 2D/3D unsteady Stokes problem, in which, in contrast to the fractional step (or time splitting) methods, the uncoupling of the velocity and pressure fields is not based on an annex time scheme. This method has been applied (with a Chebyshev collocation space discretization) to determine the threshold Re(c) of transition to unsteadiness of the flows in four square driven cavities, each provided with a (polynomial) regularization stiffer than the previous one. Preliminary comparative results are given on the threshold values and on these transitional flows.
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页码：1455 / 1461
页数：7
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