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A computationally efficient reduced order model to generate multi-parameter fluid-thermal databases
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DOI：10.1016/j.ijthermalsci.2011.08.022.png)
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Abstract
En 中文
A reduced order model (ROM) is proposed to generate multi-parameter databases of some fluid-thermal problems, using a combination of proper orthogonal decomposition, a gradient-like method, and a continuation method. The resulting ROM greatly reduces the CPU time required by slower methods based on genetic algorithm formulations. As a byproduct, the number of required snapshots is also reduced, which yields an additional improvement of the computational efficiency. The work presented in this article aims to facilitate the use of ROMs in industrial environments, in which time is a very important asset. The methodology is illustrated with the non-isothermal flow past a backward-facing step in the laminar regime, which is a representative problem, related to the engineering design of micro-heat sinks. (C) 2011 Elsevier Masson SAS. All rights reserved.
Keywords:
Reduced order model
Database generation
Backward-facing step
Non-isothermal flow
Gradient-like minimization methods
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