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With the same cross-sectional area and placed in the same turbulent flow, the largest drag will be experienced by
- a)a sphere
- b)a streamlined body
- c)a circular disc held normal to the flowdirection
- d)a circular disc held parallel to the flowdirection
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
With the same cross-sectional area and placed in the same turbulent fl...
Explanation:
Drag force is the force experienced by an object when it is moving through a fluid medium, such as air or water. It is caused by the friction between the object's surface and the fluid, as well as the pressure difference between the front and back of the object.
The magnitude of the drag force depends on several factors, including the shape and size of the object, the speed of the fluid, and the viscosity of the fluid. In general, objects with larger cross-sectional areas, such as spheres and circular discs, experience more drag than streamlined bodies.
However, when all other factors are held constant, the largest drag is experienced by a circular disc held parallel to the flow direction. This is because the flow separates from the disc at the rear edge, creating a large wake behind the disc that generates a lot of turbulence and vortices. This turbulence and vortices create a lot of drag, which can be measured as a force acting on the disc.
In contrast, a circular disc held normal to the flow direction experiences less drag because the flow is able to pass cleanly over and around the disc without creating as much turbulence and vortices. Streamlined bodies, such as airfoils or teardrop shapes, also experience less drag because they are designed to reduce the amount of turbulence and vortices created in the wake behind the object. Spheres experience a moderate amount of drag due to their symmetrical shape, but still experience less drag than a circular disc held parallel to the flow direction.
Therefore, in summary, the largest drag will be experienced by a circular disc held parallel to the flow direction, due to the large wake and turbulence created in the wake behind the disc.
Drag force is the force experienced by an object when it is moving through a fluid medium, such as air or water. It is caused by the friction between the object's surface and the fluid, as well as the pressure difference between the front and back of the object.
The magnitude of the drag force depends on several factors, including the shape and size of the object, the speed of the fluid, and the viscosity of the fluid. In general, objects with larger cross-sectional areas, such as spheres and circular discs, experience more drag than streamlined bodies.
However, when all other factors are held constant, the largest drag is experienced by a circular disc held parallel to the flow direction. This is because the flow separates from the disc at the rear edge, creating a large wake behind the disc that generates a lot of turbulence and vortices. This turbulence and vortices create a lot of drag, which can be measured as a force acting on the disc.
In contrast, a circular disc held normal to the flow direction experiences less drag because the flow is able to pass cleanly over and around the disc without creating as much turbulence and vortices. Streamlined bodies, such as airfoils or teardrop shapes, also experience less drag because they are designed to reduce the amount of turbulence and vortices created in the wake behind the object. Spheres experience a moderate amount of drag due to their symmetrical shape, but still experience less drag than a circular disc held parallel to the flow direction.
Therefore, in summary, the largest drag will be experienced by a circular disc held parallel to the flow direction, due to the large wake and turbulence created in the wake behind the disc.
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With the same cross-sectional area and placed in the same turbulent flow, the largest drag will be experienced bya)a sphereb)a streamlined bodyc)a circular disc held normal to the flowdirectiond)a circular disc held parallel to the flowdirectionCorrect answer is option 'D'. Can you explain this answer?
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With the same cross-sectional area and placed in the same turbulent flow, the largest drag will be experienced bya)a sphereb)a streamlined bodyc)a circular disc held normal to the flowdirectiond)a circular disc held parallel to the flowdirectionCorrect answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about With the same cross-sectional area and placed in the same turbulent flow, the largest drag will be experienced bya)a sphereb)a streamlined bodyc)a circular disc held normal to the flowdirectiond)a circular disc held parallel to the flowdirectionCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With the same cross-sectional area and placed in the same turbulent flow, the largest drag will be experienced bya)a sphereb)a streamlined bodyc)a circular disc held normal to the flowdirectiond)a circular disc held parallel to the flowdirectionCorrect answer is option 'D'. Can you explain this answer?.
With the same cross-sectional area and placed in the same turbulent flow, the largest drag will be experienced bya)a sphereb)a streamlined bodyc)a circular disc held normal to the flowdirectiond)a circular disc held parallel to the flowdirectionCorrect answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about With the same cross-sectional area and placed in the same turbulent flow, the largest drag will be experienced bya)a sphereb)a streamlined bodyc)a circular disc held normal to the flowdirectiond)a circular disc held parallel to the flowdirectionCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With the same cross-sectional area and placed in the same turbulent flow, the largest drag will be experienced bya)a sphereb)a streamlined bodyc)a circular disc held normal to the flowdirectiond)a circular disc held parallel to the flowdirectionCorrect answer is option 'D'. Can you explain this answer?.
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