Engineering, 13.12.2019 02:31 knutsonellie741

Fluid flows over a smooth cylinder. the diameter of the cylinder is d and the length normal to the flow direction is l. the drag coefficient is defined as:
cd⁢ = fdrag / 1/2⁢ rho⁢ u^2⁢ d⁢ l
the drag coefficient is essentially constant with a value of 1.1 in the range of reynolds numbers of 10^3 to 10^5. in this range, at a velocity of 2 m/s the drag force is 3 n. when the velocity is doubled to 4 m/s the drag force is

Answers: 1

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, Fahaddie

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

Answers: 2

continue

Engineering, 04.07.2019 18:20, cristykianpour

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?

Answers: 2

continue

Engineering, 06.07.2019 02:30, cofran

A75mm diameter shaft is supported in a journal bearing 75mm long with a diametral clearance of 0. 1mm. it supports a radial load of 1000 n and is lubricated with sae 50 oil at 70°c. find the friction torque and the power loss when the crankshaft rotates at 2900 rev/min.

Answers: 1

continue

Engineering, 06.07.2019 03:10, lacourboud20005

An electrical kettle is made out of stainless steel, weighs two pounds (when empty) with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling.

Answers: 1

continue

You know the right answer?

Fluid flows over a smooth cylinder. the diameter of the cylinder is d and the length normal to the f...