Plot data using appropriate dimensionless groups

Assignment Help Mechanical Engineering

Reference no: EM13120754

Question 1

If the velocity potential can be described by

Φ = -b/4 (x-y)(x +y)

where b is some constant, what is the formula for the stream function? Sketch the flow pattern.

Question 2

The following measurements have been taken at sea level for a model aeroplane whose propeller had a diameter of 20 cm and was flying at 54 km/hr:

Propeller speed (rpm)	2400	3000	4500
Thrust force (N)	4.2	5.4	8

(a) Assume that viscous effects are negligible

(i) Plot this data using appropriate dimensionless groups

(ii) Determine the thrust of a similar aeroplane whose propeller has a 1.3 m diameter, spinning at 1500 rpm while flying at 300 ktn/hr at 3250 m altitude.

(b) Repeat pall (a) assuming that viscous effects are dominant.

Question 3

A petrol tanker uses gravity to empty its 35 kL tank into an underground storage tank. The hose that is used has a roughness equivalent to galvanised iron, has an internal diameter of 10 cm and is 10 m long (see figure). The centreline of the square hose fitting on the tanker is mounted 50 cm off the ground, while the hose penetrates 2 m below ground level. All bends have a radius of curvature of 15 cm. It is claimed that the tank can be emptied within 30 min: verify whether this claim is correct.

Reference no: EM13120754

Questions Cloud

Solving equations with radicals and exponents : Surface area of a cube. The formula A=6V^2/3 gives the surface area of a cube in terms of its volume V. What is the volume of a cube with surface area 12 square feet?

Explain important information about counting and probability : Important information about Counting and probability, Find the number of possible combinations of picking 2 items out of 6.

What are the molar concentrations of aluminum : Consider a 1.00-L solution containing 85.5 g Al2(SO4)3 (FW = 342.15) and 21.3 g Na2SO4 (FW = 142.06). What are the molar concentrations of aluminum, sodium, and sulfate ions, respectively.

Shares and other operating improvements : Frantic Fast food had earnings after taxes of $390,000 in the year 2009 with 300,000 shares outstanding. On January 1, 2010, the firm issued 25,000 new shares. Because of the proceeds from these new shares and other operating improvements, earning..

Plot data using appropriate dimensionless groups : Assume that viscous effects are negligible Plot this data using appropriate dimensionless groups

Information about completing the square : A farmer has 40m of fencing with which to enclose a rectangular pen.Given that the pen is x m wide - show that it's area is (20x - x^2)m^2 and deduce that the maximum area that he can enclose (Answer given 100m^2).

Which costing method should she present : Stacy Ann Lynn, the great grand-daughter of the company's founder is the current CEO/President of the company, which is still a family owned business.

Calculate the resulting ph : Calculate the resulting pH if 365 mL of 2.88 M HNO3 is mixed with 335 mL of 1.10 M Ca(OH)2 solution.

Find actual proportion of stopped drivers given tickets : Would this indicate that the actual proportion of stopped drivers given tickets is not equal to .88? Use a 1% significance level.

User Account

All Pages