# 機械工程方面英文

According to our numerical investigation of the effect of a shield on the thermal performance of a plate-fin heat sink undergoing cross flow, we proffer the following conclusions.

1. The pressure drop caused by the presence of a heat sink increases with increasing Reynolds number and the attachment of a shield reinforces this tendency.

2. The attachment of a shield to a heat sink squeezes more coolant fluid into the fin-to-fin channel and enhances the thermal performance.

3. Thermal resistance decreases with increasing Reynolds number, but the effect diminishes at high Reynolds numbers. The enhancement of thermal performance by a shield is much greater at low

Reynolds numbers.

4. Increasing the fin height enhances the performance of the heat sink, but the effectiveness decreases with increasing Reynolds number. Increasing the fin height also decreases the height of a shield, in turn decreasing the impact of blockage on thermal resistance.

### 1 個解答

• Donny
Lv 7
1 0 年前
最佳解答

According to our numerical investigation of the effect of a shield on the thermal performance of a plate-fin heat sink undergoing cross flow, we proffer the following conclusions.

依據我們對鰭片式加熱槽承受交叉水流時擋板熱性能功效作的數字研究，我們提出以下結論：

1. The pressure drop caused by the presence of a heat sink increases with increasing Reynolds number and the attachment of a shield reinforces this tendency.

1. 加熱槽造成的壓降因增加了雷諾氏數而加大且擋板的附加補強這種趨勢．

2. The attachment of a shield to a heat sink squeezes more coolant fluid into the fin-to-fin channel and enhances the thermal performance.

2. 加熱槽擋板的附加擠壓更多冷卻液進入鰭片間通道同時提升熱性能．

3. Thermal resistance decreases with increasing Reynolds number, but the effect diminishes at high Reynolds numbers. The enhancement of thermal performance by a shield is much greater at low Reynolds numbers.

3. 熱阻因增加了雷諾氏數而減低，但功效在高雷諾式數時減少．在低雷諾氏數時擋板對熱性能之提升會更加巨大．

4. Increasing the fin height enhances the performance of the heat sink, but the effectiveness decreases with increasing Reynolds number. Increasing the fin height also decreases the height of a shield, in turn decreasing the impact of blockage on thermal resistance.

4. 加高鰭片提昇加熱槽性能，但有效性因增加了雷諾氏數而降低．加高鰭片也減低檔板，依次減低了熱阻上妨礙的衝擊．

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參考資料： myself