Homework Set 1
Due date: August 29, 2014 at 12:05 PM
Problem 1: Solve the initial value problems.
a) y"+4y = 2x; y(0) = 1 and y(0) = 2
b) y(3) + y = x + exp(-x) ; y(0) = 1, y(0) = 0 and y(0) = 1
c) x2y+ xy+2x2y = 0; y(0) = 0 and y(1) = 5 Hint: d(J0) = -J1
Homework Set 2 Solution
Problem 1: Determine the fin efficiency of a constant-area straight fin, having different
heat transfer coefficients on the top and the bottom. Represent your answer symbolically in
terms of the nomenclature provided by the book.
A
Homework Set 1 Solution
Due date: August 29, 2014 at 12:05 PM
Problem 1: Solve the initial value problems.
a) y"+4y = 2x; y(0) = 1 and y(0) = 2
y = exp(rx)
r 2 + 4 =0 r =2i
y=
C1 exp(2ix) + C2 exp(2ix=
) c1 sin(2 x) + c2 cos(2 x)
c
y=
Ax + B
p
0 + 4 Ax +
Homework Set 5
Due date: November 24, 2014 after class
Problem 1: Normal optical properties of spectral, normal transmissivity and reflectivity
for a shading device are given in a file call: Shade Properties.xls. Determine the normal
transmissivity and re
Homework Set 4 Solution
Due date: October 22, 2014 after class
Problem 1: Consider a horizontal plate with L = 0.5 m long with U = 5 m/s and T = 30 C.
Compare the velocity and temperature profiles to a wedge at = 5 and 10 at x/L = 0.5
and 0.75 using air a
Homework Set 3 Solution Set
Problem 1: Two large stainless steel plates, each 30 cm thick and insulated on one side, are
initially at 25 C and 100 C. They are pressed together at their uninsulated surface.
Numerical determine the temperature spatial distr
Homework Set 2
Due date: September 15, 2014 at 4:25 PM
Problem 1: Determine the fin efficiency of a constant-area straight fin, having different
heat transfer coefficients on the top and the bottom. Represent your answer symbolically in
terms of the nomen
Homework Set 5
Due date: November 24, 2014 after class
Problem 1: Normal optical properties of spectral, normal transmissivity and reflectivity
for a shading device are given in a file call: Shade Properties.xls. Determine the normal
transmissivity and re
Homework Set 3
Due date: October 3, 2014 by 4 PM (Turn in to Joyce Lowe)
Problem 1: Two large stainless steel plates, each 30 cm thick and insulated on one side, are
initially at 25 C and 100 C. They are pressed together at their uninsulated surface.
Nume
Homework Set 4
Due date: October 22, 2014 after class
Problem 1: Consider a horizontal plate with L = 0.5 m long with U = 5 m/s and T = 30 C.
Compare the velocity and temperature profiles to a wedge at = 5 and 10 at x/L = 0.5
and 0.75 using air and water