![]() ![]() How does the material used in the parts expand as its temperature rises? How does that affect the shapes of the various parts? How does that, in turn, affect the airflow around the parts and the efficiency of the engine? And so on. And nobody gets hit by flying prototype shrapnel.Ĭomputer modeling and simulation are not without their challenges, of course. Tweaking the design is a matter of changing some numerical parameters, and if it breaks, you can determine exactly how it failed. ![]() There is a better way: Build a computer model of your prototype and simulate its operation. The problem with this approach is that it’s expensive and time consuming, and if your prototype blows itself to smithereens, it’s difficult to determine exactly how it failed. If you don’t get the power output or fuel economy you were hoping for, or if the device fails, you tweak the design and try again. One approach would be to make educated guesses, build a prototype, and test it. And because the design is totally new, you have no data from previous designs to draw upon-you’re starting from scratch. Suppose you’re an aerospace engineer with a great idea for a new type of jet engine design, but you don’t know the sizes, shapes, and materials to use for the parts that will give you maximum power output with minimum fuel consumption, and that won’t break under the various thermal and mechanical stresses likely to be seen over all possible operating conditions.
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February 2023
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