Question:
Which of the following is not a method to avoid formation of vortex?
Which of the following is not a method to avoid formation of vortex?
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Baffles are the most common industrial solution for vortex control. Paring discs are specialized components for centrifugal separators.
Updated On: Jul 23, 2026
- Tilted impeller shaft
- Agitator mounted on side (eccentrically) of tank
- Use of baffles
- Using paring disc
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Vortex formation is a common problem in mixing tanks where a central agitator creates a swirling motion.
This whirlpool effect draws air into the liquid (aeration), reduces mixing efficiency, and causes mechanical stress on the equipment.
Dairy engineering employs several techniques to break this rotational flow and promote axial or radial turbulence instead.
Step 2: Detailed Explanation:
Let us examine the common methods used to prevent vortexing:
1. Use of Baffles (Option C): These are flat plates attached to the inner wall of the tank. They interfere with the circular flow and convert it into top-to-bottom turnover, which is the most effective way to eliminate a central vortex.
2. Tilted Impeller Shaft (Option A): By entering the tank at an angle rather than perfectly vertically, the impeller creates an asymmetrical flow pattern that discourages the formation of a stable central vortex.
3. Eccentric Mounting (Option B): Placing the agitator off-center (away from the geometric center of the tank) also creates an asymmetrical flow that prevents the liquid from rotating as a solid body.
Now, let us look at Option D: Paring Disc.
A paring disc is a stationary centrifugal pump component found inside a cream separator (centrifuge).
Its purpose is to convert the kinetic energy of the rotating liquid into pressure energy to discharge the separated cream or skim milk from the machine without the use of an external pump.
The paring disc has nothing to do with the prevention of vortex formation in mixing tanks; rather, it operates within a high-speed rotational system specifically designed to handle rotating fluids.
Therefore, it is the odd one out in the context of avoiding tank vortexes.
Step 3: Final Answer:
Using a paring disc is not a method to avoid vortex formation.
Vortex formation is a common problem in mixing tanks where a central agitator creates a swirling motion.
This whirlpool effect draws air into the liquid (aeration), reduces mixing efficiency, and causes mechanical stress on the equipment.
Dairy engineering employs several techniques to break this rotational flow and promote axial or radial turbulence instead.
Step 2: Detailed Explanation:
Let us examine the common methods used to prevent vortexing:
1. Use of Baffles (Option C): These are flat plates attached to the inner wall of the tank. They interfere with the circular flow and convert it into top-to-bottom turnover, which is the most effective way to eliminate a central vortex.
2. Tilted Impeller Shaft (Option A): By entering the tank at an angle rather than perfectly vertically, the impeller creates an asymmetrical flow pattern that discourages the formation of a stable central vortex.
3. Eccentric Mounting (Option B): Placing the agitator off-center (away from the geometric center of the tank) also creates an asymmetrical flow that prevents the liquid from rotating as a solid body.
Now, let us look at Option D: Paring Disc.
A paring disc is a stationary centrifugal pump component found inside a cream separator (centrifuge).
Its purpose is to convert the kinetic energy of the rotating liquid into pressure energy to discharge the separated cream or skim milk from the machine without the use of an external pump.
The paring disc has nothing to do with the prevention of vortex formation in mixing tanks; rather, it operates within a high-speed rotational system specifically designed to handle rotating fluids.
Therefore, it is the odd one out in the context of avoiding tank vortexes.
Step 3: Final Answer:
Using a paring disc is not a method to avoid vortex formation.
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