【摘要】：目前的傳熱通道設計普遍使用的是傳統(tǒng)密度法,密度法有一個不被大家重視的問題就是偽密度問題.因為使用偽密度,每一個單元導熱系數(shù)都不是真實存在的,當將這些單元篩選后,和真實值存在差異.針對此問題提出了基于火積耗散極值原理的漸進結(jié)構(gòu)優(yōu)化方法,通過比較分析,采用以生長為主退化為輔的策略,整體火積耗散在3個不同算例下比密度法篩選后的結(jié)果分別小了14%,24%,9%,即先生長后退化的雙向漸進結(jié)構(gòu)優(yōu)化方法在真實情況下是一種比傳統(tǒng)密度法更優(yōu)秀的優(yōu)化方法.
[Abstract]:At present, the traditional density method is widely used in the design of heat transfer channel. Because of the use of pseudo-density, the thermal conductivity of each unit is not real. When these elements are filtered, there is a difference from the real value. In order to solve this problem, a progressive structure optimization method based on the principle of fire product dissipation extremum is put forward. Through comparison and analysis, the strategy of taking growth as main degradation as auxiliary is adopted. Compared with the results obtained by the density method, the overall fire product dissipation is 14% smaller than that obtained by the density method under three different calculation cases. That is, the bidirectional progressive structure optimization method, which grows first and then degenerates, is a better optimization method than the traditional density method in the real case.
【作者單位】： 上海理工大學機械工程學院;
【基金】：國家自然科學基金資助項目(51175347)
【分類號】：TN602
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本文編號：2151684