Liquid at 23 (degrees C) flows at 2 m/s over a smooth, sharp-edged, flat surface 12...

Liquid at 23 (degrees C) flows at 2 m/s over a smooth, sharp-edged, flat surface 12 cm in length which is kept at 57 (degrees C). Calculate h at the trailing edge

a) if the fluid is water

b) if the fluid is glycerin (h=346 W/m^2-K)

c) Compare the drage forces in the two cases

Expert Solution

samet mamat answered 2 years ago

A flat surface of dimensions 2 m by 2 m that is given a total charge...

A flat surface of dimensions 2 m by 2 m that is given a total charge of 400 μC uniformly distributed over the surface, and where a point charge +4 μC is fixed a distance 2 cm above the centre of the charged surface. A second point charge +16 nC, with mass 10 g, is placed at rest directly above the first point charge, at a distance 2 cm from the first point charge. The second point charge is released...

Air flows over a 4 meter long flat plate at a velocity of 8 m/s. Using...

Air flows over a 4 meter long flat plate at a velocity of 8 m/s. Using a spreadsheet, calculate the boundary layer thickness and wall shear stress at 0.1 meter intervals along the plate. Do not plot the wall shear stress at x=0. Use a transition Reynolds number of 5 x 10^5 . (You will need to calculate Rex at each location to determine if the laminar or turbulent correlations should be used.) Generate a spreadsheet table that includes columns...

Question 1: Liquid (A) flows down as a thin film over the outside surface of a...

Question 1: Liquid (A) flows down as a thin film over the outside surface of a vertical flat plate 1.5 m wide (W = 1.5 m) and 3.5 m long (L = 3.5). Inert gas (B) flows across (perpendicular to) the width of the flat plate at a speed of 5 m/s. The supply of (A) is 0.27 mol/s at one end of the plate and the flow is considered to be turbulent. The gas composition of (A) at the...

Air at 20°C and a velocity of 8 m/s flows over the 4-m length of a...

Air at 20°C and a velocity of 8 m/s flows over the 4-m length of a 4-m wide single surface of a square plate whose temperature is 80°C. (For properties of air, use k = 0.02735 W/m·K, Pr = 0.7228, ν = 1.798 x 10-5 m2 /s ) Given the above information, do the calculations to answer the two MC questions below. Please clearly show/discuss your solution method and calculations. A. __________The rate of heat transfer, Q̇ , from this...

Air at 15°C flows at 9 m/s parallel to a thin flat plate measuring 260 mm...

Air at 15°C flows at 9 m/s parallel to a thin flat plate measuring 260 mm × 390 mm. The direction of flow is parallel to the 260-mm edges. The surface of the plate is at a uniform temperature of 85°C. The plate is in a large chamber with walls at a temperature of 22°C. The emissivity of the plate’s surfaces is 0·75. (a) Determine the rate of convective heat transfer from one side of the plate to air. [16]...

A liquid flows tangentially past a flat plate of dimensions total length of 4 m (parallel...

A liquid flows tangentially past a flat plate of dimensions total length of 4 m (parallel to the flow direction) and width of 1.5 m. fluid velocity is 1 m/s (length wise). What is the skin friction drag (shear force) on both sides of the plate? liquid density = 1000 kg/m3, dynamic viscosity = 2 x 10-2 N*s/m2.

A 115 N block moves on a flat surface at an initial speed of 5 m/s....

A 115 N block moves on a flat surface at an initial speed of 5 m/s. The coefficient of kinetic friction between the block and the surface is 0.28. The block is 2.2 meters away from the beginning of a spring with a coefficient of 150 N/m. The spring is initially in its stable state and has a length of 140 centimeters. Show the Work and Energy substituted equation for this case. You are not required to solve it, but...

Water at a local bulk temperature of 24°C flows at 0.8 m/s through a smooth, 1.5-cm-ID...

Water at a local bulk temperature of 24°C flows at 0.8 m/s through a smooth, 1.5-cm-ID tube that is kept at 30°C and the flow is fully developed. a) The system is extremely clean and quiet; therefore, the flow stays laminar regardless of the magnitude of ReD, until a noisy air compressor is turned on in the laboratory. Then the flow suddenly goes turbulent. Calculate the ratio of turbulent to laminar heat transfer coefficients. Use the Gnielinski correlation for turbulent...

A 8.71 kg block is sliding along a smooth surface at 11.4 m/s. It travels up...

A 8.71 kg block is sliding along a smooth surface at 11.4 m/s. It travels up a smooth ramp, and comes to a stop. How high above the ground is it when it stops? Report your answer in meters, rounded to two decimal places I attach a 3.06 kg mass to a spring with a spring constant of 72 J/m2 and compress it 0.02 m. What is the speed the mass reaches when launched horizontally? Report your answer in m/s,...

2 kg of water exist initially as a vapor and liquid at 90 degrees C in...

2 kg of water exist initially as a vapor and liquid at 90 degrees C in a rigid container of volume 2.42 m^3 (a) at what pressure is the system? (b) what is the quality of the system (c) the temperature of the container is raised to 100 degrees C. what is the quality of the system and what is the pressure? what are the dH and dU at this point relative to the initial state? (d) as the temperature...

Question