Inputs / Outputs

 

Input values to the calculator are described in the following table:

 

Value

Description

Units

Default

Substrate

Length

length of substrate in x direction

mm

50

Width

width of substrate in y direction

mm

50

Thickness

thickness of substrate

mm

2

Thermal

Conductivity

thermal conductivity of substrate

material

W/mK

10

h Lower Surface

uniform convective heat transfer

coefficient boundary condition

W/m2K

25

Source

Length

length of source in x direction

mm

-

Width

width of source in y direction

mm

-

Heat Flow

total heat dissipated by source

W

-

Left Location Y

location of left edge of source

(origin at lower left of substrate)

mm

-

Top Location X

location of top edge of source

(origin at lower left of substrate)

mm

-

 

The web tool calculates average temperature rise of each source over the ambient temperature of the fluid at the convectively-cooled lower surface of the substrate. The average source temperature rise is displayed in degrees Celsius on the heat source and, in the case of multiple sources, colours are used to indicate relative magnitude as shown below: