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Computers and Technology, 13.02.2020 17:50 mariahmimibrooks
Goal: Making and using functions and input files; plot gridded variables; use embedded control structures.
Assignment: You will write an input file, two functions and a main program that interfaces with
each of these.
1) Create an input file with the following data (in meters)
Wave height = 3
Wavelength = 10
Water depth = [1 2 3 4]
2) In coastal engineering, the "wave number" is defined as k = 2p/Lwhere Lis the waveâs wavelength. There is a relationship between the wave number and the waveâs period, T, given by:
(2pi/T)^2 = gk tanh(kh) (1)
Where his the water depth. Create a function called âwave_periodâ that will compute the wave number for each for each of the depths given in (1). This function should take wavelength, wave height, and water depth as input and give wave period as output.
3) The velocity components below a linear wave are given by the following equations:
u=(H/2)sigma[(cosh k(h+z)/sinh (kh) ] cos(kx-sigma. t) (2)
w=-(H/2)sigma[(sinh k(h+z)/sinh (kh) ] sinh(kx-sigma. t) (3)
where sigma= 2p/T, u is the x-velocity component, and w is the y-velocity component. These equations define velocity components as a function of time (t) and space (x). By holding one or the other constant, velocities can be computed.
Create a function to compute the x-velocity and y-velocity components below a wave as a function of xby holding t= 0 in the above equations. Allow the user to specify how many points they would like to use in both the x and z directions. Create a 2x2 subplot of the results using 20 points in the x-direction and 10 points in the z-direction. Please note that zin these equations starts at 0 and goes to âh.
Hint: you may want to use an embedded "for" loop (or several). Another hint: type "help quiver" to see what you should be going after.
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