Homework Answers
please read the upper limit of
integral in part b as (.01). since radius of tube is 1 c.m
![9481 s bxsisg tb N + 7x -72110 (o-o -0-3m Pp 201o 373 =0-27PCP 40000 ho - 217 PCP TO 10]0 o-ol 3 4 4 2 -1x10 91 2 4 6.01)710](http://img.homeworklib.com/questions/7a85b4a0-489a-11ec-8b01-e108900aef9e.png?x-oss-process=image/resize,w_560)
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3. (a) Explain bulk temperature Tb in circular tube flow. (5point) (b) Calculate bulk temperature Tb...
Heat transfer question.. plz solve. thd For flow of a liquid through a circular tube, the...
Heat transfer question.. plz solve. thd
For flow of a liquid through a circular tube, the mean velocity and temperature profile are as the followings u(r) = 2 2 2u 2 mo dT, 3 1 T, (x) T,(x)- dx 16 16 r 4 2 Tm uTrdr r2 Jo umo Show that Nusselt No.= 4.36
For flow of a liquid through a circular tube, the mean velocity and temperature profile are as the followings u(r) = 2 2 2u 2 mo...
Task 8 6 Pts A so called "flow straightener" is arranged in a tube to produce...
Task 8 6 Pts A so called "flow straightener" is arranged in a tube to produce a flat velocity profile, independent of the profile which is created by the flow. The straightener consist of a package of parallel-arranged thin tubes with small inner diameter, which fills out the entire cross section of the hosting tube (see fig. 1). Here a special design of the straightener is used: it consists of 50 tubes with quadratic cross section (0.025 0.025 m²) and...
i really appreciate it if explain this throughly June 1. Consider steady, fully-developed laminar flow of...
i really appreciate it if explain this throughly
June 1. Consider steady, fully-developed laminar flow of air through a Laminar Flow Element (LFE, a type of flow-meter) with an aligned bundle of 100 small bore tubes, each of diameter D 2.00 mm, and length L 200.0 mm. The pressure drop per unit length (Ap/L) across each of the 100 tubes is a function of the tube diameter D, fuid viscosity u (in units N s/m2), and average air velocity Vave....
4 Air (with density 6.08 k3 and viscosity coefficient 2.95 x 10 Pa.s) at an average pressure of 10 bar and a bulk temperature of 600 K flows through a 0.5 m long, 20 mm internal diameter circular tub...
4 Air (with density 6.08 k3 and viscosity coefficient 2.95 x 10 Pa.s) at an average pressure of 10 bar and a bulk temperature of 600 K flows through a 0.5 m long, 20 mm internal diameter circular tube at 3.0 m3 hr1. The heat flux from the tube wall is 10 kW m2. Calculate the heat transfer coefficient and the inside wall temperature of the tube. [Nu0.023 Re08 Pr04; Pr 0.69] [20 marks]
4 Air (with density 6.08 k3...
6: (a) Use the scaling laws to estimate the change of volumetric flow and pressure drop per unit length in a circular tube if the radius of the tube is reduced by a factor of 10. The pressure dro...
6: (a) Use the scaling laws to estimate the change of volumetric flow and pressure drop per unit length in a circular tube if the radius of the tube is reduced by a factor of 10. The pressure drop in a capillary tube is given by AP- 8uVavg.Lia. Here, L length of tube, a is the radius, g is the average speed of fluid and u is the viscosity). (b) Evaluate the resistance per unit length (R/L) for water flow...
In Fig. 6.2-2, why does the f versus Re curve for turbulent flow lie above the curve for laminar flow rather than below?...
In Fig. 6.2-2, why does the f versus Re curve for turbulent
flow lie above the curve for laminar
flow rather than below?
1.0 0.5 0.2 0.1 Laminar 0.05 16 f= Re 0.02 Turbulent k/D 0.004 0.01 0.001 f 0.0791 Rel/4 0.0004 -0.0001 Hydraulically smooth" 0.005 0.002 10 106 105 0.001 102 103 104 Reynolds number Re D<ū> p/u Fig. 6.2-2. Friction factor for tube flow (see definition of f in Eqs. 6.1-2 and 6.1-3. ICurves of L. F. Moody,...
Problem 3: (35pts) Atmospheric air enters the heated section of a circular tube at a flow...
Problem 3: (35pts) Atmospheric air enters the heated section of a circular tube at a flow rate of 0.005 kg/s and a temperature of 30°C. The tube is of diameter D =60mm, and fully developed conditions with h = 30W/m2K exist over the entire length of L-4m. Take cp-1015 /kg.K 2 (a) (10pts) For the case of uniform surface heat flux at q"-1000W/m, determine the total heat transfer rate q and the mean temperature of the air leaving the tube...
PROBLEM 1: Answer/Define/Explain shortly and/or Fill in the blanks (40 P) a) What are the two...
PROBLEM 1: Answer/Define/Explain shortly and/or Fill in the blanks (40 P) a) What are the two types of energy transfer in Convection? b) A thermal boundary layer must develop if ....... c) Define the critical Reynolds number. d) What are the assumptions for Boundary Layer Equations for Laminar Flow? e) Define the Nusselt number. f) Define the Prandtl number. g) How the Pr influences the relative growth of the boundary layers, explain briefly ? h) Explain favorable pressure gradient. i)...
CHE 3315 FLUID MECHANICS PROBLEM SHEET 5: MASS CONSERVATION AND FLOW RATE 1. Determine the mass...
CHE 3315 FLUID MECHANICS PROBLEM SHEET 5: MASS CONSERVATION AND FLOW RATE 1. Determine the mass flow rate of air having a temperature of 20C and gauge pressure 80 kPa as it flows through a circular duct 400 mm in diameter with an average velocity of 3 m/s. The gas specific constant R 286.9 JK /kg 2. Determine the average velocity of the steady flow at one outlet of a T- junction if the inlet flow speed is 6 m/s...
Waste heat of exhaust hot air from a manufacturing process may be recovered by passing water through a thin-walled tube of 1.00 cm diameter as shown. Assume the temperature of the hot air is 177℃ in...
Waste heat of exhaust hot air from a manufacturing process may be recovered by passing water through a thin-walled tube of 1.00 cm diameter as shown. Assume the temperature of the hot air is 177℃ in cross flow with a velocity of 20 m/s over the tube. The inlet and outlet temperature of water are 20C and 60 C, rospectively, and the ilow rate is 0.2 k/s. Deiemine (a) the total heat transfer rate from air to water, (b) The...
Heat transfer question.. plz solve. thd
For flow of a liquid through a circular tube, the mean velocity and temperature profile are as the followings u(r) = 2 2 2u 2 mo dT, 3 1 T, (x) T,(x)- dx 16 16 r 4 2 Tm uTrdr r2 Jo umo Show that Nusselt No.= 4.36
For flow of a liquid through a circular tube, the mean velocity and temperature profile are as the followings u(r) = 2 2 2u 2 mo...
Task 8 6 Pts A so called "flow straightener" is arranged in a tube to produce a flat velocity profile, independent of the profile which is created by the flow. The straightener consist of a package of parallel-arranged thin tubes with small inner diameter, which fills out the entire cross section of the hosting tube (see fig. 1). Here a special design of the straightener is used: it consists of 50 tubes with quadratic cross section (0.025 0.025 m²) and...
i really appreciate it if explain this throughly
June 1. Consider steady, fully-developed laminar flow of air through a Laminar Flow Element (LFE, a type of flow-meter) with an aligned bundle of 100 small bore tubes, each of diameter D 2.00 mm, and length L 200.0 mm. The pressure drop per unit length (Ap/L) across each of the 100 tubes is a function of the tube diameter D, fuid viscosity u (in units N s/m2), and average air velocity Vave....
4 Air (with density 6.08 k3 and viscosity coefficient 2.95 x 10 Pa.s) at an average pressure of 10 bar and a bulk temperature of 600 K flows through a 0.5 m long, 20 mm internal diameter circular tube at 3.0 m3 hr1. The heat flux from the tube wall is 10 kW m2. Calculate the heat transfer coefficient and the inside wall temperature of the tube. [Nu0.023 Re08 Pr04; Pr 0.69] [20 marks]
4 Air (with density 6.08 k3...
6: (a) Use the scaling laws to estimate the change of volumetric flow and pressure drop per unit length in a circular tube if the radius of the tube is reduced by a factor of 10. The pressure drop in a capillary tube is given by AP- 8uVavg.Lia. Here, L length of tube, a is the radius, g is the average speed of fluid and u is the viscosity). (b) Evaluate the resistance per unit length (R/L) for water flow...
In Fig. 6.2-2, why does the f versus Re curve for turbulent
flow lie above the curve for laminar
flow rather than below?
1.0 0.5 0.2 0.1 Laminar 0.05 16 f= Re 0.02 Turbulent k/D 0.004 0.01 0.001 f 0.0791 Rel/4 0.0004 -0.0001 Hydraulically smooth" 0.005 0.002 10 106 105 0.001 102 103 104 Reynolds number Re D<ū> p/u Fig. 6.2-2. Friction factor for tube flow (see definition of f in Eqs. 6.1-2 and 6.1-3. ICurves of L. F. Moody,...
Problem 3: (35pts) Atmospheric air enters the heated section of a circular tube at a flow rate of 0.005 kg/s and a temperature of 30°C. The tube is of diameter D =60mm, and fully developed conditions with h = 30W/m2K exist over the entire length of L-4m. Take cp-1015 /kg.K 2 (a) (10pts) For the case of uniform surface heat flux at q"-1000W/m, determine the total heat transfer rate q and the mean temperature of the air leaving the tube...
PROBLEM 1: Answer/Define/Explain shortly and/or Fill in the blanks (40 P) a) What are the two types of energy transfer in Convection? b) A thermal boundary layer must develop if ....... c) Define the critical Reynolds number. d) What are the assumptions for Boundary Layer Equations for Laminar Flow? e) Define the Nusselt number. f) Define the Prandtl number. g) How the Pr influences the relative growth of the boundary layers, explain briefly ? h) Explain favorable pressure gradient. i)...
CHE 3315 FLUID MECHANICS PROBLEM SHEET 5: MASS CONSERVATION AND FLOW RATE 1. Determine the mass flow rate of air having a temperature of 20C and gauge pressure 80 kPa as it flows through a circular duct 400 mm in diameter with an average velocity of 3 m/s. The gas specific constant R 286.9 JK /kg 2. Determine the average velocity of the steady flow at one outlet of a T- junction if the inlet flow speed is 6 m/s...
Waste heat of exhaust hot air from a manufacturing process may be recovered by passing water through a thin-walled tube of 1.00 cm diameter as shown. Assume the temperature of the hot air is 177℃ in cross flow with a velocity of 20 m/s over the tube. The inlet and outlet temperature of water are 20C and 60 C, rospectively, and the ilow rate is 0.2 k/s. Deiemine (a) the total heat transfer rate from air to water, (b) The...
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