ABSTRACT
The development of the high-speed digital computer during the twentieth century has had a great impact on the way principles from the sciences of §uid mechanics and heat transfer are applied to problems of design in modern engineering practice. Problems that would have taken years to work out with the computational methods and computers available 50 years ago can now be solved at very little cost in a few seconds of computer time. This does not mean that computer runs today only last a few seconds. Instead, many computer tasks today take days of CPU time as the scope of problems that can be tackled have increased immensely. We still need even more computer power to accurately simulate the many §ows that require evaluation for the design of modern vehicles, engines, processing equipment, etc.
