Laser Design Optimisation - 3d Modelling SolidWorks CAD/AutoCAD
Elance - United States

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A manufacturer has developed a preliminary design for the housing of a laser. The schematic of the preliminary design is shown in Figure 1. The basic geometry is an aluminium tube positioned centrally in a finned aluminium extrusion. The extrusion is symmetric - a schematic of one quadrant is presented in Figure 2 and the dimensions are shown in Figure 3.

There are 10 aluminium fins in each quadrant of the housing. Each fin has a thickness of 2 mm, and the air gap between each fin is also 2 mm. The annular gap between the two parts is filled with helium at 35 Torr. The heat input into the annulus is 20 W per cm length and the spatial distribution of heat deposition is assumed to be constant.

Water flows through the central tube to transfer heat from the central aluminium tube to the outer heatsink. The water flow rate through the tube is 150 cc/min. Air is blown between the aluminium fins, in the same direction as the water flows, at 1 m/s in order to enhance the cooling of the laser. The system will operate at 20C ambient air temperature.

Desired Skills: 3d Modelling SolidWorks CAD/AutoCAD

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