置入物形狀對儲槽中顆粒排放行為之影響

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姓名

約新(Khafidz Anshori Yosin) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

置入物形狀對儲槽中顆粒排放行為之影響
(The Influence of Obstacle Shape on Particle Discharge Behavior in a Silo)

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至系統瀏覽論文 (2029-7-31以後開放)

摘要(中)

本研究的目的是探討在筒倉中插入多種形狀障礙物對顆粒流速的影響。隨著堵塞現象可能對食品和藥品的儲存造成負面影響，這個問題尤其需要認真對待。保持顆粒流動並減少阻塞時間，是提高工作效率的關鍵。我們通過實驗研究了三角形、正方形、七邊形和圓形障礙物在二維平底筒倉中對流速的影響。在這些情況下，我們考慮了障礙物的旋轉速度變化和垂直軸上位置的變化。研究發現，與其他形狀相比，三角形障礙物對顆粒流速影響最大，表現出最快的流速。此外，旋轉速度也對流速有顯著影響，低速度下的流速最慢，而中速度和高速度則表現出相似且較快的流量。障礙物在垂直軸上的位置對流速同樣有重要影響，障礙物越靠近出口，堵塞現象越明顯，因為這會影響顆粒在出口通道中的流動。這些研究結果有助於理解和優化筒倉中顆粒流動的條件，從而提高產業儲存和運輸過程中的效率和可靠性。

摘要(英)

The objective this study to investigate the effect of inserting obstacles that have several shapes on the particle flow rate in the silo. The flow rate that occurs with clogging has a negative impact on the storage of foodstuffs and medicines. Therefore, the impact of the clogging problem must be taken seriously, the particle flow rate must always flow and the clogging time must be reduced to increase efficiency in work. We present experimental results regarding the effect of triangular, square, heptagon and circle obstacles on particle flow rates in 2D flat bottom silos. In this case, we add variations in rotational speed differences and variations in obstacle position on the vertical axis. We found that the flow rate in the triangle has the fastest flow rate compared to the flow rate in other shape of obstacles. Rotational speed also affects flow rate with the result that lowest rotational speed has the slowest flow rate. Meanwhile, medium and high rotational speed have similar and constant flow rates. The placement of obstacles on the vertical axis has an influence on the flow rate. The farther the object is from the outlet, the more clogging will disappear because the more particles can remain in the outlet lane.

關鍵字(中)

★ 筒倉
★ 阻塞
★ 流量

關鍵字(英)

★ silo
★ clogging
★ flow rate

論文目次

List of Content
Chinese Abstract i
Abstract ii
Acknowledge iii
List of Content iv
List of Figures v
Acronym x
CHAPTER I
1.1 Introduction 1
1.2 Literature Review 2
1.3 Research Motivation 9
CHAPTER II
2.1 Experimental Equipment 17
2.2 Research Methodology 19
2.3 Experimental Step 20
CHAPTER III
3.1 Effect of variation obstacle shape, rotational speed, and position of obstacle shape 28
3.2 Analysis of effect velocity field and mesh velocity 31
CHAPTER IV
4.1 Conclusion 63
Reference 64

參考文獻

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指導教授

蕭述三(Shu-San Hsiau)

審核日期

2024-8-14

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