PSPCL AE 2012
⭕ A. Neglecting the variations in the longitudinal direction
⭕ B. Neglecting the variations in the transverse direction
⭕ C. Uniform flow
⭕ D. Steady uniform flow
📚 Explanation:
In one-dimensional flow, all flow properties such as velocity, pressure, and density are assumed to vary only along one direction (the direction of flow).
🔹 Variations in the transverse direction (perpendicular to the flow) are neglected.
🔹 This simplifies the analysis since flow strength and characteristics remain constant across the cross-section.
💡 Practically used in: pipes, nozzles, and channels where flow is mainly along one direction.
In one-dimensional flow, all flow properties such as velocity, pressure, and density are assumed to vary only along one direction (the direction of flow).
🔹 Variations in the transverse direction (perpendicular to the flow) are neglected.
🔹 This simplifies the analysis since flow strength and characteristics remain constant across the cross-section.
💡 Practically used in: pipes, nozzles, and channels where flow is mainly along one direction.
👉 Therefore, the correct answer is: B. Neglecting the variations in the transverse direction
Key Concepts on Flow Dimensionality:
- 1D Flow: Variations only in one direction; transverse variations neglected.
- 2D Flow: Flow properties vary in two directions.
- 3D Flow: Flow varies in all three spatial directions.
- Used for simplified analysis of pipe and nozzle flows.
