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Consider the flow of air in a long frictional pipe under isothermal conditions....
Air flows down a pipe with a diameter of 0.15 m. At the inlet to the...
Air flows down a pipe with a diameter of 0.15 m. At the inlet to the pipe, the Mach number is 0.25, the pressure is 70 kPa, and the temperature is 35°C. If the flow can be assumed to be adiabatic and if the mean friction factor is 0.005, determine the length of the pipe if the Mach number at the exit is 0.6. Also, find the pressure and temperature at the exit to the pipe. ?
scouS in a pipe are expre in terms of a Jriction Jactor, J. It is important to frictional forces in pipe flow because t...
scouS in a pipe are expre in terms of a Jriction Jactor, J. It is important to frictional forces in pipe flow because they result in pressure loss which must be accounted for in the piping system. For turbulent flow in pipes, the friction factor is calculated using the Colebrook equation: e/D 2.51 VT where e is the roughness height, D is the pipe diameter and Re is the pipe Reynolds number (dimensionless). For e/D = 0.008 and Re =...
Consider an imaginary method to generate a supersonic flow in a two-step process of heating and...
Consider an imaginary method to generate a supersonic flow in a
two-step process of heating and cooling. Heat is first added to air
at a low Mach number, increasing the Mach number until the flow is
thermally choked at M = 1. Heat is then removed from the air, which
further increases the Mach number (this is the imaginary part, that
you were able to jump over M = 1 to the supersonic branch). Air at
a pressure of 100...
Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of 10...
Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of 10 m/s. The nozzle is very poorly insulated, causing a stray heat transfer rate of 10 kW into the system. The outlet of the nozzle is exposed to an ambient pressure of 1 bar and is choked (Mach = 1). If the area ratio of the nozzle (A, /A2) is 5, what is: The velocity of the nozzle outlet, in [m/s], if the specific heat...
2. Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of...
2. Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of 10 m/s. The nozzle is very poorly insulated, causing a stray heat transfer rate of 10 kW into the system. The outlet of the nozzle is exposed to an ambient pressure of 1 bar and is choked (Mach 1. If the area ratio of the nozzle (A1/A2) is 5, what is: a. The velocity of the nozzle outlet, in [m/s], if the specific heat...
Given the following data, calculate the mass flow rate of air exiting a pipe. Pipe diameter...
Given the following data, calculate the mass flow rate of air exiting a pipe. Pipe diameter = 2.47 in. Atmospheric Pressure = 12.38 psia Air Temperature = 61 °F The following total pressure to static pressures differences have been measured. Assume that all measurements were made along a line that passes through the center of the pipe. | Radius (inches) 1.25 1.00 0.75 0.5 0.25 Pressure Difference (psid) 0.012 0.019 0.0204 0.028 0.035 0.039 0.037 0.030 0.021 0.017 0.007 0.25...
Hi Can you please solve the question? Regards QUESTION 8 On a Mollier diagram show all the stagnation and static points...
Hi
Can you please solve the question?
Regards
QUESTION 8 On a Mollier diagram show all the stagnation and static points required to represent the complete flow process in a diffuser. Air enters a diffuser with an average velocity of 375 m/s at a stagnation pressure and temperature of 360 kPa and 470 K respectively and leaves at a stagnation pressure of 300 kPa with an average velocity of 120 m/s and a static pressure of 280 kPa. Determine (i)...
Problem 4.018 SI Air enters a horizontal, constant-diameter heating duct operating at steady state at 300...
Problem 4.018 SI Air enters a horizontal, constant-diameter heating duct operating at steady state at 300 K, 1 bar, with a volumetric flow rate of 0.25 m3/s, and exits at 325 K, 0.95 bar. The flow area is 0.05 m2 Assuming the ideal gas model with k-1.4 for the air, determine: (a) the mass flow rate, in kg/s, (b) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer to the air, in...
The frictional loss in a pipe flow experiment using 0.5 m length, 3 mm diameter pipe...
The frictional loss in a pipe flow experiment using 0.5 m length, 3 mm diameter pipe (e=0.0020 mm) has produced the following data in Table 1 and Figure 13: The approximate Reynolds number range where significant change in flow characteristics occur is: Table 1: Pipe flow data Head loss (m) Velocity (m/s) Rep 1.000 0.054 0.3076 923 -y = 0.2963x1.7868 0.08 0.4507 1352 R = 0.9657 0.102 0.5580 1674 hu (m) 0.122 0.6363 1909 0.100 0.14 1113 0.7300 2190 ty...
Air flows through a converging-diverging nozzle/diffuser. Assuming isentropic flow, air as an ideal gas, and constant...
Air flows through a converging-diverging nozzle/diffuser. Assuming isentropic flow, air as an ideal gas, and constant specific heats determine the state at several locations the system. Solve using equations rather than with the tables. Note: The specific heat ratio and gas constant for air are given as k=1.4 and R=0.287 kJ/kg-K respectively. --Given Values-- Inlet Temperature: T1 (K) = 353 Inlet pressure: Pl (kPa) = 546 Inlet Velocity: V1 (m/s) = 61 Area at nozzle inlet: A1 (cm^2) = 7.24...
scouS in a pipe are expre in terms of a Jriction Jactor, J. It is important to frictional forces in pipe flow because they result in pressure loss which must be accounted for in the piping system. For turbulent flow in pipes, the friction factor is calculated using the Colebrook equation: e/D 2.51 VT where e is the roughness height, D is the pipe diameter and Re is the pipe Reynolds number (dimensionless). For e/D = 0.008 and Re =...
Consider an imaginary method to generate a supersonic flow in a
two-step process of heating and cooling. Heat is first added to air
at a low Mach number, increasing the Mach number until the flow is
thermally choked at M = 1. Heat is then removed from the air, which
further increases the Mach number (this is the imaginary part, that
you were able to jump over M = 1 to the supersonic branch). Air at
a pressure of 100...
Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of 10 m/s. The nozzle is very poorly insulated, causing a stray heat transfer rate of 10 kW into the system. The outlet of the nozzle is exposed to an ambient pressure of 1 bar and is choked (Mach = 1). If the area ratio of the nozzle (A, /A2) is 5, what is: The velocity of the nozzle outlet, in [m/s], if the specific heat...
2. Air enters an isothermal nozzle at a temperature of 300 K, and a velocity of 10 m/s. The nozzle is very poorly insulated, causing a stray heat transfer rate of 10 kW into the system. The outlet of the nozzle is exposed to an ambient pressure of 1 bar and is choked (Mach 1. If the area ratio of the nozzle (A1/A2) is 5, what is: a. The velocity of the nozzle outlet, in [m/s], if the specific heat...
Given the following data, calculate the mass flow rate of air exiting a pipe. Pipe diameter = 2.47 in. Atmospheric Pressure = 12.38 psia Air Temperature = 61 °F The following total pressure to static pressures differences have been measured. Assume that all measurements were made along a line that passes through the center of the pipe. | Radius (inches) 1.25 1.00 0.75 0.5 0.25 Pressure Difference (psid) 0.012 0.019 0.0204 0.028 0.035 0.039 0.037 0.030 0.021 0.017 0.007 0.25...
Hi
Can you please solve the question?
Regards
QUESTION 8 On a Mollier diagram show all the stagnation and static points required to represent the complete flow process in a diffuser. Air enters a diffuser with an average velocity of 375 m/s at a stagnation pressure and temperature of 360 kPa and 470 K respectively and leaves at a stagnation pressure of 300 kPa with an average velocity of 120 m/s and a static pressure of 280 kPa. Determine (i)...
Problem 4.018 SI Air enters a horizontal, constant-diameter heating duct operating at steady state at 300 K, 1 bar, with a volumetric flow rate of 0.25 m3/s, and exits at 325 K, 0.95 bar. The flow area is 0.05 m2 Assuming the ideal gas model with k-1.4 for the air, determine: (a) the mass flow rate, in kg/s, (b) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer to the air, in...
The frictional loss in a pipe flow experiment using 0.5 m length, 3 mm diameter pipe (e=0.0020 mm) has produced the following data in Table 1 and Figure 13: The approximate Reynolds number range where significant change in flow characteristics occur is: Table 1: Pipe flow data Head loss (m) Velocity (m/s) Rep 1.000 0.054 0.3076 923 -y = 0.2963x1.7868 0.08 0.4507 1352 R = 0.9657 0.102 0.5580 1674 hu (m) 0.122 0.6363 1909 0.100 0.14 1113 0.7300 2190 ty...
Air flows through a converging-diverging nozzle/diffuser. Assuming isentropic flow, air as an ideal gas, and constant specific heats determine the state at several locations the system. Solve using equations rather than with the tables. Note: The specific heat ratio and gas constant for air are given as k=1.4 and R=0.287 kJ/kg-K respectively. --Given Values-- Inlet Temperature: T1 (K) = 353 Inlet pressure: Pl (kPa) = 546 Inlet Velocity: V1 (m/s) = 61 Area at nozzle inlet: A1 (cm^2) = 7.24...
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