Some More on Flow Physics; The Different Steps Involved in Flow Computations — Lesson 3

This lesson covers the intricate aspects of flow physics and its connection with flow computations. It delves into the different steps involved in flow computations, starting from defining the problem and objectives, choosing the governing equations, discretizing the domain, solving the governing equations, and finally, validating the results. The lesson also discusses the concept of wing tip vortices, finite wings, and the impact of pressure imbalance on flow. It further explores the application of these concepts in the design of aircraft wings, spacecraft configurations, and internal aerodynamics like ventilation systems in passenger aircraft.

Video Highlights

01:50 - Explanation of wing tip vortices and their development in finite wings.
05:02 - Explanation of the concept of momentum augmentation in the boundary layer.
09:48 - Discussion on the flow computations in space vehicles and the concept of re-entry vehicles.
16:29 - Explanation of the steps involved in performing a CFD simulation of a flow problem.
20:28 - Discussion on the concept of grid generation and the solution of governing equations.
24:46 - Explanation of the post-processing step in CFD simulation and the importance of validation.

Key Takeaways

- Understanding the connection between flow physics and flow computations is crucial in aerodynamics.
- Finite wings and wing tip vortices play a significant role in aircraft design.
- The process of flow computations involves several steps including problem definition, governing equations selection, domain discretization, solution of equations, and result validation.
- The application of flow computations extends to spacecraft configurations and internal aerodynamics.
- The validation of computational results against standard cases is essential to ensure the accuracy and stability of the solution.