Problem 4: Numerical Methods (Shooting Method) (25 Points) Working for a company called Fin Design Inc., you are asked to design a cylindrical fin to increase the heat transfer rate from a pipe as shown in the figure below. Temperature of ambient air = Ta The relevant values in the figure are: R₁ = 0.8 in R₁= 1.0 in T,= 100 F Tv = 300 F R₁ Temperature T = T at r = Ro/nThe equation governing the temperature variation within the fin is given by: d²T 1 dr -4T=0 dr² r dr You may assume the tip of the fin is at the temperature of the surrounding air. Your goal is to determine the rate of heat transfer through this fin but for this you need to obtain the temperature distribution within the fin first. a. Dividing your fin into 4 equally spaced segments, use the shooting method to get the temperature profile within the fin. Fill in your values in the table below (if you used Goal seek/solver and obtained the correct value of w=dT/dr in your first try...that is OK!) (10 points) Estimate of slope (w = dT/dx) r (inches) 0.8 0.85 0.9 0.95 1.0 Fill in 1 estimate of "(w=dT/dr)" here T(r) - 1" estimate Fill in 2nd estimate of "(w=dT/dr)" here T(r) -2nd estimate Fill in 3rd estimate of "(w=dT/dr)" here T(r)-3rd estimate Fill in 4th estimate of "(w=dT/dr)" here T(r)-4th estimate b. Show a sample step-by-step calculation for any one of the columns that you report in the tables above (i.e., choosing any "r" location and any T (r) of your choosing, show how you used the shooting method to predict the T at the next spatial location - i.e., the number in the row below it). Please show the calculations clearly to enable me to replicate your results (10 points) Temperature at the first spatial location: Spatial-step size: Calculation of the slopes (dT/dr and dw/dr) at that spatial location:/n(Please make space here) Temperature at the next spatial location: (Please make space here) c. How did you ensure (or why do you feel) that you have arrived at the numerically correct answer? (5 points)

Solved: Problem 4: Numerical Methods (Shooting Method) (25 Points) Working for

Home
questions and answers
problem 4 numerical methods shooting method 25 points working for a co

Question

Problem 4: Numerical Methods (Shooting Method) (25 Points) Working for a company called Fin Design Inc., you are asked to design a cylindrical fin to increase the heat transfer rate from a pipe as shown in the figure below. Temperature of ambient air = Ta The relevant values in the figure are: R₁ = 0.8 in R₁= 1.0 in T,