- #1
desktophustler
- 8
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Have a fluid flow in a cylindrical pipe with insulation around it. The insulation is in the shape of a truncated cone. It starts at a thickness with a radius only slightly thicker than the pipe and the radius increases as you move along the pipe. The radius increases at a constant rate.
The goal is to figure out the outer wall temperatures of the cone if we know the bulk fluid temp inside. Things I considered were that a generic 2D model using cylindrical cords could be used and the outer surface area and changing radius could be accounted for, but this would assume that the heat only flows outward radially. This is techinally incorrect as the heat would flow through the path of least resistance (i.e. at an angle away from the pipe to. heat won't travel through 5 inches of insulation when it can go through 3)
So to go around this situation, I figured I'd have to use a 3D model and solve numerically. However, programming isn't my forte. Any ideas? Generally, this appears to be a good MatLab problem. Is this somthing that I could to in VBA? If so, how?
The length of cone is very short compared to the overall process, so cooling of the fluid inside may be able to be neglected. Go ahead and assume that it is at a constant bulk temp
The goal is to figure out the outer wall temperatures of the cone if we know the bulk fluid temp inside. Things I considered were that a generic 2D model using cylindrical cords could be used and the outer surface area and changing radius could be accounted for, but this would assume that the heat only flows outward radially. This is techinally incorrect as the heat would flow through the path of least resistance (i.e. at an angle away from the pipe to. heat won't travel through 5 inches of insulation when it can go through 3)
So to go around this situation, I figured I'd have to use a 3D model and solve numerically. However, programming isn't my forte. Any ideas? Generally, this appears to be a good MatLab problem. Is this somthing that I could to in VBA? If so, how?
The length of cone is very short compared to the overall process, so cooling of the fluid inside may be able to be neglected. Go ahead and assume that it is at a constant bulk temp