費瑪螺旋微流道熱沉設計參數之優化

林敬唯

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費瑪螺旋微流道熱沉設計參數之優化

Optimization of Design Parameters for Fibonacci Spiral Microchannel Heat Sinks

林敬唯 , Masters　　Advisor：許政行　　

繁體中文

費瑪數列；田口法；螺旋微流道散熱器；費瑪螺旋；聚甲基丙烯酸甲酯； Fibonacci series ； Taguchi Method ； spiral micro channel heat sink ； ANSYS fluent ； Fibonacci spiral ； Poly Methyl MethAcrylate

Abstract │ Reference (40) │ Altmetrics

Abstract 〈TOP〉

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In this study, the Fibonacci series was adopted in design-optimal of spiral micro channel heat sink. By using Taguchi Method, the performance variation in different channel parameters (such as width, height, flow rate, and fluid media) combinations were thoroughly studied, aimed for producing higher performance spiral micro channel heat sink.

There are two phases in this study: Firstly, the ANSYS fluent numerical simulation software and Taguchi Method were used to shorten the design and experiment time.  Secondly, the pressure drop and thermal resistance were concerned for validating flow field and heat dissipation performance difference in Fibonacci spiral micro channel heat sink. Therefore, two set of experiments were setup for flow field and heat dissipation separately.

In flow field experiment, transparent Poly Methyl MethAcrylate (PMMA) was selected as main material for models; significance among channel parameters has found by Taguchi Method. (Ranked as: flow rate >channel height > channel width > Fluid media) This result shows good agreement with numerical simulation in phase one.

In heat dissipation experiment, corrosive-resistive Phosphor bronze (S3000) was selected as main material of models witch was machined by CNC. Optimal parameters combination has taken form flowfield experiments; with 90 Watts ceramic electric heater, and water flow rate ranging from 20 – 90 (ml/min)

In conclusion, this research achieved lowest 0.071 (K/W) thermal resistance. This Fibonacci spiral micro channel heat sink could suppress CPU core temperature under 35 ℃ (When subject to 100 Watts server-level CPU), by comparison traditional air-cooling model is ranged from 50 to 70 ℃.

Reference ( 40 ) 〈TOP〉

【1】徐子皓應用於微流道流速調整之類神經演算邏輯開發中原大學機械工程學系碩士學位論文 (2016)
連結：
【2】吳彥廷類神經網路應用於三重微流道散熱器之設計參數中原大學機械工程學系碩士學位論文 (2016)
連結：
【3】 H.S. Dang and T.A.T. Nguyen. “The application of Fibonacci sequence and Taguchi method for investigating the design parameters on spiral micro-channel,” Applied System Innovation (ICASI), (2016)
連結：
【4】 J.C. Jiang, H.S. Dang, T.A.T. Nguyen, and C.C. Chang “Investigating the design parameters on Spiral Micro-Channel by using Fibonacci sequence and Taguchi Method,” Microsystem Technologies (SCI) Accepted. (2016)
連結：
【5】許丞毅三重微流道散熱優化設計中原大學機械工程學系碩士學位論文(2015)
連結：

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