EXPERIMENTAL ANALYSIS AND VALIDATION OF STAGERRED, CIRCULAR, AND DROPPED PIN FINS IN 1- DIRECTIONAL AND 2-DIRECTIONAL FORCED CONVECTION

Mechanical Engineering

This experimental study investigates the variation and improvement of heat transfer in staggered pin fin heat sinks with both drop and circular shapes under a constant heat flux. A comparison was carried out using aluminum, stainless steel, and iron as materials for drop and circular-shaped pin fins. The pins, each with a diameter of 10 mm, were manufactured using Aluminum-Magnesium-Silicon alloy, stainless steel, and ferrous metals. The base plate was made of the same material, and the fins were fixed to it using threaded connections. Multiple tests were performed on each material to determine which offered better heat dissipation. Further, tests were conducted to evaluate which fin shape—circular or drop—was more efficient for maximizing thermal performance. Additional trials were also executed to determine whether one-directional or two-directional forced convection provided better heat transfer, helping to identify the most effective airflow method. The complete evaluation comparing drop and circular pin fins was carried out in this experimental work.

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