Required information A smooth steel (SG = 7.86) sphere is immersed in a stream of ethanol at 20°C moving at 1.5 m/s. Take D = 0.5 cm. For ethanol at 20°C, take p= 789 kg/m³ and u= 0.0012 kg/m-s. Take n= 22/7.

Required information A smooth steel (SG = 7.86) sphere is immersed in a stream of ethanol at 20°C moving at 1.5 m/s. Take D = 0.5 cm. For ethanol at 20°C, take p= 789 kg/m³ and u= 0.0012 kg/m-s. Take n= 22/7.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.29P: Air at 20C flows at 1 m/s between two parallel flat plates spaced 5 cm apart. Estimate the distance...

See similar textbooks

Related questions

Q: What is the significance of Burger's equation? Elaborate briefly.

A: The degree and direction of the lattice deformation associated with a dislocation in a crystal…

Q: For the draining liquid fi lm of Fig. , what are theappropriate boundary conditions ( a ) at the…

Q: Air at standard conditions of I atm and 27°C flows over a flat plate at 20 m/s. The plate is 60 cm…

A: Given Data velocity, V=20 m/s Side of the square, s=0.60m Air standard condition, P=1atm, T= 27C

Q: Atmospheric air with free flow velocity U_∞= 30 m/s flows through a circular cylinder at T_∞= 250 K…

A: There are two types of convection heat transfer process:- 1) free convection 2) forced convection…

Q: Two large air tanks, one at 400 K and 300 kPa and the otherat 300 K and 100 kPa, are connected by a…

A: Given Data: The pressure in the large tank 1 is: P1 = 300 kPa. The temperature in the large tank 1…

Q: centrifuge bowl is to separate two immiscible liquids, one with SG 1.1 and the other with SG 0.9.…

Q: The tank is filled with air at 20°C and 139 Pa at rest. Tooth from a nozzle under stable weather…

A: I apologize for not giving the answer only as I am required to give some explanation. i will try to…

Q: Water and alcohol mix Pmix ???kg/m² Water Q = 0.1 m/s Pwater - 999 kg/m² Alcohol (SG = 0.8) Q = 0.3…

Q: In whât external real flows do we not have a boundary layer ? Explain.

A: This problem is related to fluid mechanics. Fluid mechanics is the subject of mechanical engineering…

Q: Q. 6 A 4.5-cm wide space between two plates is filled with SAE 30W lubricating oil at 26.7°C (Hoil =…

A: Given, Width between the plates,w=4.5cmViscosity of oil,μ=0.301645Ns/m2Drag force, F=18NVelocityof…

Q: g. The difference between extensive and intensive properties. h. Cavitation mechanism and water…

A: Extensive property is a property that is dependent on the amount of the substance whereas an…

Q: Calculate the minimum flight speed of an aircraft at constant altitude. Consider and aircraft with…

Q: A 0.8-m-outer-diameter spherical tank is completely submerged in a flowing water stream at a…

A: Write the expression of the Reynold number. From the corresponding Reynold number, the coefficient…

Q: Explain in your own understanding how Bernoulli’s principle works in aviation.

A: 1. Bernoulli Principle states the pressure difference between lower and upper side of wing which…

Q: i. Find the Mach no. of an aircraft flies with the same Mach no. at elevations of 8000m (T=-42 C°)…

Q: 18 m (Another review problem) A helicopter of mass 10,000 kg hovers at sea level while carrying a…

A: Solution: Let F be the force which is impacting due to reaction of the air which blades forced due…

Q: Calculate the air velocity at ports 1 and 2 if the water column pressure difference is 8.5 cm. Air…

A: At 1, velocity = 0 At 2, velocity = 36.52 using Stagnation pressure = static pressure + dynamic…

Q: Consider a snowpack of height 30.0 cm, temperature -5.0°C, and density of 420 kg/m'. Isothermal…

A: Given data, Height of snowpack, h = 0.3 m Temperature of the snow, Tsnow = -5 °C Density of snow,…

Q: Ageothermal power plant was installed at the rear side diff of Mayon Terrain that generates thermal…

Q: What is the power of a steam jet 15mm in diameter moving at 750 m/s? Steam condition, 1.4 kg/cm2,…

Q: What is the Betz limit on wind turbines? Derive the Betz limit by writing the necessary admissions…

A: Betz's law shows the most extreme power that can be extricated from the wind, autonomous of the…

Q: 15. Determine the aircraft Mach no. flies with the same Mach no. at elevations of 8100m (T=-44 C°)…

A: The Mach number of the flight at 8100 meters can be expressed as,

Q: Given: Tennis ball, with D=64 mm and m - 579, dropped in standard sea level air. ..nd: (a) Terminal…

A: Given data as per question m=0.057 kgd=0.064 mterminal velocityy will be reached…

Q: After a particularly intense test in Engineering, Toby sits down to enjoy a nice cool very large…

Q: A long 8-cm diameter vertical steam pipe whose external surface temperature is 90 degrees C passes…

Q: ) A 75 mm-diameter orifice is on the vertical side of a closed tank. The tank rests on a flat ground…

A: Given: Diameter of orifice→D=75 mm=0.075 m Height of the orifice from the ground: →h=0.5 m Hence…

Q: Helium at 20° C and low pressure flows around a thin plate 1 m long and 2 m wide. You want the…

A: Given, Length = L = 1 m Width = B = 2 m Temperature = T = 20 oC = 293 K Frictional resistance = F =…

Q: It is planned to lift and move logs from inaccessible forest by means of air balloons. Helium at…

Q: A jet powered airplane, having the following characteristics in steady level flight: rectangular…

A: Wing arae. S=20 m2Normal gross mass, m=8986 kgLift coefficient, CL=1.33Parasite drag coefficient,…

Q: Find the draft loss in rectangular breeching 2.59m x 3.67m x 30.48m long when 196 m3/sec flue gas of…

A: Given: The rectangular breaching dimension is 2.59m x 3.67m x 30.48m. Flow rate is 196 m3/sec.…

Q: The demand for electric power is usually much higher during the day than it is at night, and utility…

A: Given data Head available = 50 mIrreversible Head Loss = 4 mVolume Flow rate = 2 m3/sTurbine has to…

Q: parallel flow of dry air at V = 3 m/s, T, = 45°C, and atmospheric pressure = 20°C. In the first…

Q: Consider a stream of R-134a

A: 111.3KJ/s

Q: Atmospheric air with free flow velocity U_∞= 30 m/s flows through a circular cylinder at T_∞= 250 K…

A: There types of convection heat transfer process:- 1) free convection 2) forced convection Prandtl…

Q: 1. when ( a) M 1 (c) M =1 - , the flow is accelerates if the cross sectional area is increases 2. If…

A: 1. When M>1, the flow becomes supersonic flow and velocity increases when area increases. 2.…

Q: Water (T= 10 C, , k=0.644 W/m.C, u = 5.54x 10^-7 m2/s, Pr=3.55), flow over plate 1m x 1m, with…

Q: Methane (CH4) fl ows through an insulated 15-cm-diameterpipe with f -0.023. Entrance conditions are…

A: Flow through the Pipe is measured using Reynold equation of turbulence. There are many type of…

Q: When the site is chosen, it is proposed that three-blade type wind turbines are installed, which can…

A: Given data: Velocity range : 3 m/s to 12 m/sTurbine blade length = 75 mPower coefficient = 0.54Air…

Q: Write down the power-law velocity profile empirical correlation and when is this relation valid?

A: According to Nikuradse, The velocity profile for smooth pipe is given by, uumax=yR1n where, n…

Q: A thin metal sheet serving the purpose of an an anemometer has a length of 2.5 cm with a width of 8…

Q: In this era of expensive fossil fuels, many alternativeshave been pursued. One idea from SkySails,…

A: Given Data Velocity of wind is: vw=30 mi/h=13.41 m/s Propeller power is: P=1250 hp≈932125 W Angle…

Q: Consider two identical wind turbines with a hub height of 40 m, one located in flat agricultural…

A: Height =40m The velocity of wind is 10 m/s at a height of 100 m. To find Pagricultural/Pforest

Q: Process water flows at a velocity of 6 m/s through a 10 cm ID 90° elbow. Pressure was measured to be…

Q: Air at 1 atm and 20°C has an internal energy of approxi- mately 2.1 E5 J/kg. If this air moves at…

A: Kinetic energy of an object is defined as the energy possessed by the object by virtue of its…

Q: 10-20 kg m-3. Consider a blast wave expanding radially in a solar wind with p = Po(R/AU)-2 and Po A…

A: A blast wave expanding radially in a solar wind with p = Po(R/AU)-2 and Po= 10-20 kg m-³. A large…

Question

Estimate its drag in N. Take C_D ≈ 0.4.

Required information
A smooth steel (SG = 7.86) sphere is immersed in a stream of ethanol at 20°C moving at 1.5 m/s. Take D = 0.5 cm. For
ethanol at 20°C, take p= 789 kg/m3 and u= 0.0012 kg/m-s. Take n= 22/7.
Estimate its drag in N. Take CD = 0.4.
The drag is
N.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

The large block shown is x = 72 cm wide, y = 54 cm long, and z = 9.0 cm high. This block is passing through air (density of air p = 1.43 kg/m³) at a speed of v = 8.61 m/s. Find the drag force F41 acting on the block when it has the velocity vj and a drag coefficient I = 0.812. V2 Fa.1 N %3D Find the drag force F42 acting on the block when it has the velocity vz with a drag coefficient I = 0.893. F42 N Find the drag force Fa.3 acting on the block when it has the velocity vz with a drag coefficient I = 1.06. F4.3 = N EN
Fluid Mechanics Problem: A ship is 150 m long and has a wetted area of 5000 m2.If it is encrusted with barnacles, the ship requires 7000 hp to overcome friction drag when moving in seawater at 15 kn and 20oC. What is the average roughness of the barnacles? How fast would the ship move with the same power if the surface were smooth? Neglect wave drag. Note: Treat the ship hull as a flat plate. Use eq. 7.48b to find effective barnacle roughness height.Use equation (7.45) White for the drag coefficient CD = D/.5pV2A , where A is the hull (plate) area, to find the ship velocity for smooth plate.
Problem 4. A cork ball (SG = 0.21) with a diameter of D = 0.30 m is tied to an object on the bottom of a river as %3D shown. (a) For an angle of B = 30°, estimate the speed of the river current neglecting the weight of the cable and the drag on it. (b) Briefly discuss how the angle changes for a range of speeds from 0.4 m/s to 10 m/s. U
QI/ If the velocity profile of the boundary layer is 4 =-÷O find the thickness of boundary %3D layer, the shear stress at trailing edge and the drag force on one side of plate 2 m long , i if it is Kg immersed in water flowing with velocity of 0.4 m/s (p = 998 , 0= 1.007*10-6 m2/s m3
Q1 A car is traveling at sea level at a constant speed. It weighs 2500-lbs, has a frontal area of 20 ft² and has a 90% drivetrain efficiency. Its engine runs at 4000 rev/min, producing 168 ft-lb of torque. The drive axle slippage of 2%, 14-inch-radius wheels, and an overall gear reduction ratio of 2.5 to 1. What is its drag coefficient?
The drag polar equation of a light airplane in clean configuration can be written as Cp = 0.358 + 0.0405 C₁². It has a weight of 18,681 N. The wing area is 14.41 m². Calculate the minimum power required in watts. (Round off answer with no decimal places, No units, No commas) Answer given: 1461792 A 5,000 lbs. aircraft has an excess power of 75 hp at sea level. If the service ceiling is 3,657.6 m, determine the time to climb from sea level to absolute ceiling in minutes. (Round off answer with no decimal places. No units, No commas) Answer given: 17
A ship is 125 m long and has a wetted area of 3500 m2.Its propellers can deliver a maximum power of 1.1 MWto seawater at 20°C. If all drag is due to friction, estimatethe maximum ship speed, in kn.
A new sports car has a drag corfficient of 0.30 and a frontal area of 18.5 ft<, and is traveling at 90 mi/h. How much power (in ft-lb/s) is required to overcome aerodynamic drag if air density is 0.002378 slugs/ft?
3) An advertising sign mounted on the roof of a car is 33 inches tall, 15 inches wide and 54 inches long (airflow direction). The underside of the sign is flush with the top surface of the roof. Take air properties to be: p = 0.075 lbm/ft' and u= 1.22x10 lbm/ft.sec. Used a pressure drag coefficient of 1.2 for the advertisement sign. Calculate the total drag on the sign and the power required to overcome its effect if the car is travelling at a constant speed of a) 12 mph and b) 45 mph. Note: Provide a schematic diagram (sketch) of the problem configuration (if applicable). Every numerical calculation must be preceded by the appropriate equation. Do not forget units & dimensions during your calculations.
A ship is 150 m long and has a wetted area of 5000 m2.If it is encrusted with barnacles, the ship requires 7000 hpto overcome friction drag when moving in seawater at 15 kn and 20°C. What is the average roughness of thebarnacles? How fast would the ship move with the samepower if the surface were smooth? Neglect wave drag.
A 5,000 lb airplane with wing area of 250 sq. ft and power available of 450 hp is at sea level flight standard condition. The airplane drag-to-lift relation is close to Co = 0.025 + 0.048 CL². What is the rate of climb (in feet per minute) at a flight speed of 180 miles per hour?
Q1: Find the boundary layer thickness (8) equation, the shear stress (to) and the coefficient of drag (C₁) if the velocity distribution in the laminar boundary layer over the face of a spillway was observed to be: (40%) 2 5 --0-0-0) = 2 + Then calculate the boundary layer thickness and drag force if the air flows over a sharp edged flat plate 0.25m long and 0.5m wide at a velocity 1 m/s, take the air density 1.23 kg/m³ and the kinematic viscosity is 1.46*10-5 m/s².