Chapter 1 Aerodynamics: Some Introductory Thoughts The term \aerodynamics\is generally used for problems arising from flight and other topics involving the flow of air. Ludwig Prandtl, 1949 Aerodynamics: The dynamics of gases, especially of atmospheric interactions with moving objects. The American Heritage Dictionary of English Language, 1969

Chapter 1 Introduction 1.1 Preliminary Remarks When you think about it, almost everything on this planet either is a fluid or moves within or near a fluid. -Frank M. White What is a fluid?

Properties of Pressure Vertical to the surface and point into it. At any point, pressure is independent of orientation

When is a flow compressible? compressible flow differs from an incompressible one in that significant change happens in the density

随着现代科学技术的飞速发展,人们对 材科的要求越来越高。 在结构材料方面,不但要求强度高,还 要求其重量要轻,尤其是在航空航天领域。 金属基复合材料正是为了满足上述要求 而诞生的

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《流体动力学》（英文版）lecture 9

《流体动力学》（英文版）lecture 7

《流体动力学》（英文版）lecture 6