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Flow Rate & Continuity Equation Video Lecture | Fluid Mechanics for Mechanical Engineering
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FAQs on Flow Rate & Continuity Equation Video Lecture - Fluid Mechanics for Mechanical Engineering
| 1. What is flow rate in civil engineering? |  |
Ans. Flow rate in civil engineering refers to the volume of fluid (liquid or gas) that passes through a given point per unit time. It is typically measured in cubic meters per second (m³/s) or liters per second (L/s) and is an important parameter for designing and analyzing various hydraulic systems.
| 2. How is flow rate calculated using the continuity equation? | |
Ans. The continuity equation, derived from the principle of conservation of mass, states that the flow rate at any point in a system is equal to the product of the cross-sectional area of flow and the velocity of the fluid at that point. Mathematically, it can be expressed as Q = A * V, where Q is the flow rate, A is the cross-sectional area, and V is the velocity of the fluid.
| 3. Can flow rate be different at different points in a fluid system? | |
Ans. Yes, flow rate can vary at different points within a fluid system. This is because the cross-sectional area and velocity of the fluid may change at different locations. However, according to the continuity equation, the product of the area and velocity remains constant throughout the system, ensuring the conservation of mass.
| 4. How is flow rate affected by changes in cross-sectional area? | |
Ans. When the cross-sectional area of a fluid system decreases, the velocity of the fluid increases to maintain a constant flow rate, as per the continuity equation. Conversely, if the cross-sectional area increases, the velocity decreases. This relationship is known as the principle of continuity and is crucial in understanding fluid behavior in pipes, channels, and other hydraulic structures.
| 5. What are the practical applications of the continuity equation in civil engineering? | |
Ans. The continuity equation is widely used in civil engineering for various applications, including water supply systems, sewer networks, irrigation channels, and stormwater management. It helps in designing and analyzing the flow characteristics of these systems, ensuring efficient and sustainable fluid transport. By considering the continuity equation, engineers can determine flow rates, velocities, and pipe sizes to optimize the performance of hydraulic infrastructure.
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Nov 15, 2024 Last updated |
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