Fluid-mechanics Questions Set 12:
Which of the following is not an example of a magnetofluid?
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What is the typical value of the Reynolds number for water flowing in narrow tubes?
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The Reynolds number
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Which of the following properties describes the concept of viscosity?
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The Froude number is the ratio of
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What is the specific speed of a centrifugal pump, delivering 800 liters of water per second against a head of 15 meters at 750 rpm?
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Which of the following is NOT a desirable characteristic of the liquid used in the manometer?
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A rectangular water tank, full to the brim, has its length, breadth, and height in the ratio of 2:1:2. The ratio of the hydrostatic force at the bottom to that at any larger vertical surface is
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Calculate the capillary effect in millimetres in a glass tube of 4 mm diameter, when immersed in mercury. The temperature of the liquid is 20°C and the value of surface tension of mercury at 20°C in contact with air is 0.51 N/m. Take the contact angle as 130° and the specific weight as 133 kN/m³.
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Consider a pipe with a diameter of 20 mm and water flowing inside it at a constant velocity of 1 m/s at the entrance. You are tasked with a CFD (Computational Fluid Dynamics) analysis to determine the minimum necessary length of the pipe for accurate results with minimum computational power. Given the coefficient of viscosity as 1E-2 and the density of water as 1000 kg/m³, what is the minimum necessary length of the pipe (in mm) to complete the task?
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