Dave:
One word, imagination. But seriously though, it would depend upon the scale of the of the model. What is the height and centering of the original corrugation. If the original is 1-1/2" high, and your model is 1/2" to the foot, you would divide the 1-1/2" by 24 (12"/1/2") and the result would be 1/16" high on the model. It is fairly easy to get too small for certain details on small models. What about ink lines for simulated corrugation. Another would be glued on fishing line at the appropriate centers before painting, etc., etc.
Jim Fruit