Aerodynamics Lecture 3: Aerodynamic fundamentals скачать в хорошем качестве

Aerodynamics Lecture 3: Aerodynamic fundamentals

Key concepts in incompressible flow aerodynamics Definition: Incompressible flow occurs when the fluid density is constant, meaning pressure changes don't significantly affect the density. Mach number: This approximation is valid for speeds much lower than the speed of sound, generally when the Mach number is less than 0.3. Simplification: Assuming incompressible flow significantly simplifies the analysis of fluid motion, making complex calculations manageable. Governing equations: The study of incompressible flow relies on fundamental principles, including the conservation of mass, momentum, and energy. Elementary flows: The course involves analyzing basic flow patterns like uniform, source, sink, doublet, and vortex flows, which can be combined to model more complex scenarios. Airfoil and wing theory: It delves into the characteristics of two-dimensional airfoils, thin airfoil theory, and the calculation of lift generated by wings. Applications: This fundamental knowledge is applied to understand the aerodynamics of everyday objects and vehicles, such as automobiles, low-speed airplanes, and submarines.