三重微流道散熱優化設計

Optimal Design Of Dissipation of Three Microchannels

許丞毅(Cheng-Yi Hsu)

指導教授 ： 許政行

中原大學/工學院/機械工程研究所/碩士(2015年)

https://doi.org/10.6840/cycu201500746

摘要

本研究的目的是探討三重微流道的最佳流道形狀與散熱因子參數，
探討不同的流體與流道形狀組合交互影響下，對於微流道散熱影響的
重要參數，並找出其最佳組合因子以找出底座最小溫差。
本文使用 ANSYS FLUENT 分析軟體做模擬分析，並使用田口法優化找
出最佳散熱功率之組合參數，使用適應性類神經模糊推論系統(ANFIS)
確認結果，其中因子包含了流道入口寬度、流道入口高度 、
入口流道間距、流速、流體。
在初次模擬分析優化中各因子對實驗的貢獻度,其中以流速,流道二,
流道三,以及流質影響最大，在優化過程中最佳因子組合為 A2(流道
一:0.08mm)-B1(流道二:0.46mm)-C3(流道三:0.04mm)-D3(流
速:1.5m/s)-E3(中距一:0.06mm)-F3(中距二:0.06mm)-G2(上
距:0.06mm)-H1(流體:水)，測得最小平均溫差為 16.02oC。
第二次模擬分析優化中並發現到因子間有交互作用，利用田口法交
互直交表進行分析，並使用適應性類神經模糊推論系統(ANFIS)確認，
最佳因子組合為 A’3(流道一:0.12mm)- B’1(流道二:0.46mm)- C’3(流道
三:0.04)為最佳解，測得最小平均溫差為 14oC。

關鍵字

三重微流道、田口法、ANFIS

並列摘要

The objective of the study is aimed at examining the optimized shape
of three-layered microchannel and the performance parameters of heat
dissipation effect.
In the present study, we probe into the critical parameters to the
performance of micro-channel under the confounding of different
combination of fluids and channel shapes. The optimal combination of
factors is found in order to obtain the minimal temperature difference
between top and bottom surfaces.
The ANSYS Fluent is applied for simulation analysis of the
microchannel system. For optimum evaluation, the Taguchi method is used
to figure out the combination factors of the optimal cooling capability, and
the test results of the Adaptive Network-Based Fuzzy Inference
System(ANFIS) is applied to confirm and verify the optimal combination
obtained by the Taguchi method.
The factors considered of the system include the width of channel
entrance ( ), height of channel entrance ( ), spacing of channel
entrance ( ), velocity and fluid. At the first optimization step, the factors
of inlet velocity, channel2, channel3, and fluid are identified as the most
influential contribution, and the optimal factor combination obtained is
A2(channel1:0.08mm)-B1(channel2:0.46mm)-C3(channel3:0.04mm)-D3(v
elocity:1.5m/s)-E3(spacing1:0.06mm)-F3( spacing 2:0.06mm)-G2( spacing
3:0.06mm)-H1(fluid :water), which has a minimum average temperature
difference of 16.02℃.
III
For the second step of optimization, the factors are found by using the
confirmation of the Taguchi’s Interaction Tables and the ANFIS. The
optimal factors combination obtained is A’3(channel1:0.12mm) -
B’1(channel2:0.46mm) - C’3(channel3:0.04mm), resulting a minimum
average temperature difference of 14℃.

並列關鍵字

Three-layered microchannel, Taguchi Method,ANFIS

參考文獻

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