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a vertical shaft passes through a bearing and is lubricated with an oil having a viscosity of 02 n sm2 as shown in fig
the reynolds number rhovdm is a very important parameter in fluid mechanics verify that the reynolds number is
what are the dimensions of acceleration of gravity density dynamic viscosity kinematic viscosity specific weight and
the excess pressure inside a bubble is known to be dependent on bubble radius and surface tension after finding the pi
the water flowrate q in an open rectangular channel can be measured by placing a plate across the channel as shown in
because of surface tension it is possible with care to support an object heavier than water on the water surface as
under certain conditions wind blowing past a rectangular speed limit sign can cause the sign to oscillate with a
to test the aerodynamics of a new prototype automobile a scale model will be tested in a wind tunnel for dynamic
you are to conduct wind tunnel testing of a new football design that has a smaller lace height than previous designs
the lift and drag developed on a hydrofoil are to be determined through wind tunnel tests using standard air if
the pressure drop between the entrance and exit of a 150- mm-diameter 90deg elbow through which ethyl alcohol at 20
the fluid dynamic characteristics of an airplane flying 240 mph at 10000 ft are to be investigated with the aid of a
the drag characteristics of a torpedo are to be studied in a water tunnel using a 15 scale model the tunnel operates
for a certain fluid flow problem it is known that both the froude number and the weber number are important
the drag characteristics for a newly designed automobile having a maximum characteristic length of 20 ft are to be
the drag on a 2-m-diameter satellite dish due to an 80- kmhr wind is to be determined through a wind tunnel test using
a large rigid rectangular billboard is supported by an elastic column as shown in fig p765 there is concern about the
a new blimp will move at 6 ms in 20 degc air and we want to predict the drag force using a 113-scale model in water at
1 this problem involves the time that it takes water to drain from two geometrically similar tanks to proceed with this
a 140 scale model of a ship is to be tested in a towing tank see video v720 determine the required kinematic viscosity
river models are used to study many different types of flow situations see for example video v712 a certain small river
as winds blow past buildings complex flow patterns can develop due to various factors such as flow separation and
1 for laminar flow in a round pipe of diameter d at what distance from the centerline is the actual velocity equal to
for fully developed laminar pipe flow in a circular pipe the velocity profile is given by in ms where r is the inner