机械工程专业的团队Purdue University已经设计了高效，屡获殊荣的3D可打印散热器。
The sharkskin inspired design took the #1 spot at the虚拟学生散热器设计挑战，由美国大学竞赛由ASMEK-16 Committeeand the电气和电子工程师研究所(IEEE). The challenge was also backed and sponsored by global conglomerateGE。
The Heat Sink Design Challenge
The design challenge prompted teams of engineering students with a theoretical heat source and dimensions, leaving them to design a 3D printable heat sink – a device that transfers heat away from electronic components to keep them cool. The teams were told that they would be judged on their design’s ability to remove heat, the total manufacturing cost, and the amount of raw material it would take to produce.
Soumya Bandyopadhyay，博士学位普渡大学团队的学生说：“拥有高性能电子设备的关键是使它们保持凉爽。在过去的十年左右的时间里，增材制造使我们能够为新的高级热溶液提出创新的设计。”
在比赛的第一阶段之后，前六支球队的设计是在铝上的3D印刷GE添加剂概念激光M2 3D打印机。然后在受控条件下将散热器放入测试俄勒冈州立大学to see if their real performances were up to par with the simulations.
When the dust settled, it was the Purdue engineers that were crowned the winners. Their design had performed better than expected, cost less than initially thought, and even did a great job of minimizing the amount of aluminum used.
The Purdue design
组成普渡大学团队的四名工程师 - Soumya Bandyopadhyay，Julia Meyer，Adeline Naon和Saeel Pai-在一月份开始了他们的旅程。头几天是用笔和纸集思广益的，团队决定从大自然中汲取灵感。那时，他们定居在鲨鱼皮肤启发的几何形状上，用于散热器。
Sharkskin has a very characteristic surface texture. It features millions of microscopic spike-like projections called denticles, each playing their part in reducing drag so the shark is able to swim with less water resistance. Seeing as the laws of fluid dynamics apply to both liquids and gases, the Purdue engineers added denticle-like shapes to the walls of their design. This had the effect of reducing pressure drop and inducing air mixing.
工程师还在散热器的前后添加了一级方程式涡流发电机。这些“旋转器”故意在设计体内产生湍流，最大程度地提高空气颗粒之间的传热。最后，为了从散热器上驱逐热空气，学生在两个涡流发生器之间实施了“呼吸器部分”。呼吸器类似于在人肺中发现的空气囊，从周围环境中吸收凉爽的空气，并通过穿孔的坡道排出加热的空气。
大学的研究人员以前曾从事过a method of3D打印混凝土风力涡轮机零件for offshore use. The research ultimately aims to 3D print concrete anchors which cost just a fraction of the price of their steel counterparts.
Engineers from the University have also recently used 3D printing to开发可跟踪的微型机器人。The novel color-based patterning method is expected to make the robots suitable for biomedical applications such as non-invasive diagnosis and drug delivery, where individual tracking is key.
The4th annual3D印刷行业奖将于2020年11月举行，我们需要奖杯。有机会赢得全新Craftbot Flow IDEX XL3D printer,enter the MyMiniFactory trophy design competition here。We’re happy to accept submissions until the 30th of September 2020.
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Featured image shows Purdue’s 3D printed heat sink. GIF via Purdue University.
