Problem 5. Air flows steadily and adiabatically from a large tank at a stagnation pressure of Poi = 10 bar and stagnation temperature of To = 400 K through a frictionless converging nozzle and into a constant-area pipe with a diameter of D = 0.10 m and an average friction factor of f = 0.30. At Section (1) at the nozzle exit (or duct inlet), the absolute pressure is P1 = 8.0 bar. At Section (2) at the duct exit, the absolute pressure is P1 = 5.0 bar. (a) Determine the Mach numbers and temperatures at Section (1) and Section (2). (b) Determine the critical length and the length of pipe from Section (1) and Section (2). (c) Sketch the T-s diagram for flow from large tank to Section (2). (d) Briefly discuss what will happen if the length of the pipe is increased with fixed Po1 and To.

Problem 5. Air flows steadily and adiabatically from a large tank at a stagnation pressure of Poi = 10 bar and stagnation temperature of To = 400 K through a frictionless converging nozzle and into a constant-area pipe with a diameter of D = 0.10 m and an average friction factor of f = 0.30. At Section (1) at the nozzle exit (or duct inlet), the absolute pressure is P1 = 8.0 bar. At Section (2) at the duct exit, the absolute pressure is P1 = 5.0 bar. (a) Determine the Mach numbers and temperatures at Section (1) and Section (2). (b) Determine the critical length and the length of pipe from Section (1) and Section (2). (c) Sketch the T-s diagram for flow from large tank to Section (2). (d) Briefly discuss what will happen if the length of the pipe is increased with fixed Po1 and To.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Block A has a mass of 10 kg and bloc B has a mass of 2 Kg and are kept at rest. The 2 blocs are comected by a cord passing by a wheel at the top of the incline. The surface of the incline has a friction coefficient -0.12. The angle of the incline is 0= 30°. A is at 6 meters above the incline floor. After being released from rest, the bloc A will move down. Determine the total energy of the bloc A after it has moved down the incline by 4 meters.. Calculate its velocity. 6 m B
Air enters a diffuser with velocity 289.3m/sec and temperature T₁-300°K and exits with negligible velocity. Assume that air is an ideal gas with Cp=1.004 kJ/kg. Determine the temperature T₁ at the outlet of the diffuser. Provide your answer in Kelvin (K). 1
Air enters a nozzle that has an inlet area of 0.4 m?, at 200 kPa, 500 °C. and 30 m/s. At the exit the conditions are 100 kPa and 443 °C. Part A If the exit area is 45 cm? , determine the steady-state exit velocity. Use the IG flow-state TESTcalc. Express the steady-state exit velocity in meters per second to four significant figures. ΑΣφ vec ? V. = m/s Submit Request Answer
stagi 900 kPa 1- Air enters a compressor for a mass flow rate of 0.04 kg/s. at a stagnation temperature 358 K. Assuming the AIR compression process to be isentropic, determine the power 0.04 kg/s require. 100 kPa stagnation
The converging-diverging nozzle(as shown in the figure given below) expands and accelerates dry air to supersonic speeds at the exit where p2 = 8 kPa and T₂ = 240 K. At the throat, p₁ = 284 kPa, T₁= 665 K, and V₁ = 495 m/s. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Air- D₁ = 1 cm Kg/s D₂ = 2.5 cm Determine the mass flow for a steady compressible flow of an ideal gas.
Following manufacture, it is planned to use the biodiesel to power a rocket which uses a de Laval nozzle. The nozzle throat has a cross-sectional area of 5.5 x 10-3 m2. The hot air enters the nozzle at 300 bar(atm) and 77 °C and exits nozzle at 1 bar(atm). If we have choked flow at the throat, what is the pressure at the throat? Considering we have choked flow at the throat, what is the flow rate at the exit of the nozzle?
Problem (6.1) Steam at 1.8 MPa and 275 °C expands through a convergent- divergent nozzle to 0.1 MPa. If there is 10 % loss in energy between the throat and the nozzle exit and the vapor flow rate is 0.5 kg/s, determine the cross- sectional area of the throat and the nozzle exit.
V1
Air flows isentropically through a duct as shown in the figure below. For the conditions shown, find the Mach number at both stations 1 and 2 and the flowrate. The diameter is not necessarily constant. Ma₁ (1) D₁ = 0.15 m V₁ = 40 m/s P1 = 4 atm abs. Ma₁ = Ma₂ = i m₁ = M. kg/s Ma₂ (2 T₂ = 225 K P2 = 2 atm abs.
2. An ideal gas, following the relationship (Pv = 75 m2/s²), flows in a horizontal pipe at a constant temperature. The internal diameter of the pipe is 0.025 m and the pressure drop is 11 kPa for each 5m length. Calculate the mass flow rate per unit area in kg/sm2, assuming the pressure at the end of the pipe is 12 kpa and the friction factor f = 0.009. Ignore the kinetic energy.
HANDWRITTEN: Learjet 35 is a multi-role business jet and a military transport aircraft equipped with tail-mounted turbofan engines. This business jet has a cruising speed of 480 mph and cruising at an altitude of 45,000 ft. The ambient pressure and temperature is 390 R and 310 psfa, respectively. If the compressor has a pressure ratio of 18:1 and the maximum operating temperature is 2885 degrees Fahrenheit. Compute for the (a) compression ratio, (b) volume and temperature at each point, (c) Heat added and Heat rejected (d) Wnet (item c), (e) Brayton work (based on compressor and turbine work), and (f) efficiency. Note: Make sure to indicate a CORRECT P-V and T-S diagram
Q3- Air flows from a reservoir and enters a uniform pipe with a diameter of 0.05 m and length of 10 m. The air exits to the atmosphere. The following conditions prevail at the exit: P2 = 1bar, temperature T2 = 27°C and M2 = 0.9. Assume that the average friction factor to be f = 0.004 and that the flow from the reservoir up to the pipe inlet is essentially isentropic Estimate the total temperature and total pressure in the reservoir under the Fanno flow model. %3D M2 0.9 D-0.05 m] L=10 m Po=? To=C T2-27°C P2=1|Bar]