What is a fluid flow regime called when properties remain constant over time at any given point_________________?
Show answer Hide answer
Answer: C. steady flow
Explanation
Steady flow is defined as a fluid flow regime where fluid properties at any given point do not change with respect to time. Velocity, pressure, and density remain completely constant at any fixed spatial coordinate throughout the duration of the flow. This temporal constancy distinguishes steady flow from unsteady flow regimes where fluid parameters fluctuate over time. Fluid dynamics classifies flow regimes based on how fluid properties vary with respect to spatial and temporal coordinates. Mathematical analysis of fluid systems becomes significantly easier when analyzing steady flow conditions in engineering. Time derivatives of fluid properties equal zero in steady flow, simplifying Navier-Stokes equations for practical applications.
One dimensional flow describes spatial variations along a single coordinate rather than the temporal constancy of steady flow. Uniform flow means fluid properties do not change along spatial coordinates, which is distinct from temporal steadiness. Turbulent flow refers to chaotic, fluctuating fluid mixing patterns rather than the time-invariant nature of steady flow.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. What is the time difference between the total available time and the actual time needed to finish a task called_________________?
Show answer Hide answer
Answer: B. float
Float in project management represents the amount of excess time available beyond the actual time needed to complete a task. It measures how long a task schedule can slip without delaying subsequent dependent activities...
Q2. How are the fire tubes configured in a Cochran and Scottish marine boiler_________________?
Show answer Hide answer
Answer: A. horizontal
Cochran and Scottish marine boilers are classic examples of cylindrical shell boilers. Their internal fire tubes are oriented in a horizontal direction to maximize surface area. Hot combustion gases pass horizontally thr...
Q3. What is the magnitude of the pressure differential across the boundary of a spherical liquid droplet _______________?
Show answer Hide answer
Answer: D. p = 2T/r
Surface tension at a curved liquid interface creates an inward radial pressure differential. For a spherical liquid droplet, the Young-Laplace equation accounts for surface tension across two orthogonal planes. Solving t...
Q4. What is the function of the steam injector in low-capacity boilers____________________?
Show answer Hide answer
Answer: C. pump water, similar to boiler feed pump
A steam injector uses high-velocity steam expansion to entrain and pump feed water into low-capacity boilers, acting as a feed pump. It converts thermal energy from steam into kinetic energy, creating a low-pressure zone...
Q5. What task does an injector perform in a small steam generation plant________________?
Show answer Hide answer
Answer: C. pump feed water
An injector uses a high-velocity steam jet to create a low-pressure suction zone. This vacuum effect lifts water from a lower reservoir and forces it into the boiler. Kinetic energy converts into pressure energy, allowin...
Q6. What type of flow is defined by velocity vectors that are identical in magnitude and orientation at every spatial point for any instant________________?
Show answer Hide answer
Answer: B. uniform flow
Uniform flow is characterized by velocity vectors that remain completely identical in magnitude and direction. This spatial consistency must apply across every single point within the fluid flow field at any given instan...