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自然界中,数百万种昆虫、上万种的鸟类和蝙蝠能够在空中自由地飞翔,这些飞行生物在生物种群中占有绝大部分的份额。自古以来,人们就梦想着在天空翱翔,对鸟在滑翔状态的研究使人们研制出固定翼飞机上了天。经过不断探索与发展,人类发明的飞行器种类繁多,其载重和飞行速度远远超过了自然界的飞行生物,但在机动性、效率等方面却远不及飞行生物。常见的扑翼飞行是一种低速的非定常飞行,属于低速不可压非定常黏性流场范畴,分析这一类流场中的各个物
In nature, millions of insects, tens of thousands of species of birds and bats can fly freely in the air, and these flying creatures make up the lion’s share of the biological stock. Since ancient times, people have dreamed of soaring in the sky. The research on the gliding state of birds has led to the development of fixed-wing aircraft. After continuous exploration and development, a great variety of aircraft were invented by mankind, whose carrying and flying speed far surpassed the flying creatures in nature, but far less than flying creatures in terms of mobility and efficiency. Common flapping-wing flight is a kind of low-speed unsteady flight, which belongs to the field of low-velocity incompressible unsteady viscous flow field. Analyzing the objects in this kind of flow field