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Introduction to Normal Shock Wave Video Lecture | Fluid Mechanics for Mechanical Engineering
FAQs on Introduction to Normal Shock Wave Video Lecture - Fluid Mechanics for Mechanical Engineering
| 1. What is a normal shock wave? |  |
Ans. A normal shock wave is a type of shock wave that occurs when a fluid, such as air, encounters a sudden change in its flow conditions, causing a rapid increase in pressure, temperature, and density. It is called "normal" because the shock wave is perpendicular to the direction of the flow.
| 2. How is a normal shock wave formed? | |
Ans. A normal shock wave is formed when a fluid flow encounters a sudden change in its flow area, such as passing through a converging-diverging nozzle or encountering an obstacle. As the flow tries to adjust to the new conditions, it compresses and slows down, leading to the formation of a shock wave.
| 3. What are the properties of a normal shock wave? | |
Ans. A normal shock wave is characterized by a sudden increase in pressure, temperature, and density across the wave front. The flow velocity decreases sharply across the shock wave, causing a significant loss of kinetic energy. The shock wave also causes a sharp increase in entropy.
| 4. What are the applications of normal shock waves? | |
Ans. Normal shock waves have various applications in engineering and physics. They are used in supersonic aircraft design, where shock waves help slow down the incoming air to subsonic speeds. Normal shock waves also play a role in the design of wind tunnels, gas pipelines, and rocket nozzles.
| 5. How are normal shock waves analyzed and calculated? | |
Ans. Normal shock waves can be analyzed using the conservation equations of mass, momentum, and energy. The properties of the fluid before and after the shock wave are related through these equations, allowing engineers and scientists to calculate the properties of the shock wave, such as the pressure ratio, temperature ratio, and Mach number across the wave. Computational fluid dynamics (CFD) methods and experimental testing are also used for detailed analysis and validation.
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