EBK APPLIED FLUID MECHANICS
7th Edition
ISBN: 9780100668348
Author: UNTENER
Publisher: YUZU
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Chapter 15, Problem 23RQ
To determine
Stagnation pressure
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Calculate the stagnation temperature and pressure for the following substances flowing through a duct: (a) helium at 0.25 MPa, 50°C, and 290 m/s; (b) nitrogen at 0.15 MPa, 50°C, and 300 m/s; and (c) steam at 0.1 MPa, 350°C, and 340 m/s.
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In the piping system assume the air enters the duct at Ma1 = 0.4. The average friction factor for the duct is estimated to be 0.021. If the Mach number at the duct exit is 0.8, and the temperature of cooling the slurry should be >40°C at the duct exit. Determine the length and exit temperature of the duct and if these parameters are suitable for this application.
Chapter 15 Solutions
EBK APPLIED FLUID MECHANICS
Ch. 15 - List six factors that affect the selection and use...Ch. 15 - Define range as it relates to flowmeters.Ch. 15 - Describe three methods for calibrating flowmeters.Ch. 15 - Prob. 4RQCh. 15 - Prob. 5RQCh. 15 - Prob. 6RQCh. 15 - Prob. 7RQCh. 15 - What is the nominal included angle of the...Ch. 15 - Why is there such a difference between the angles...Ch. 15 - Prob. 10RQ
Ch. 15 - Prob. 11RQCh. 15 - Describe an orifice meter and how it is used.Ch. 15 - Describe a flow tube and how it is used.Ch. 15 - Of the venturi, the flow nozzle, the flow tube,...Ch. 15 - Describe pressure loss as it relates to flowmetersCh. 15 - Rank the venturi, the flow nozzle, the orifice,...Ch. 15 - Prob. 17RQCh. 15 - Prob. 18RQCh. 15 - Prob. 19RQCh. 15 - Describe a magnetic flowmeter and how it is usedCh. 15 - Describe how mass flow irate can be measuredCh. 15 - Describe a pitot tube and how it is used.Ch. 15 - Prob. 23RQCh. 15 - Prob. 24RQCh. 15 - Prob. 25RQCh. 15 - Prob. 26RQCh. 15 - Describe the method used to measure the average...Ch. 15 - Prob. 28RQCh. 15 - Describe a hot-wire anemometer and how it is usedCh. 15 - Prob. 30RQCh. 15 - A venturi meter similar to the one in Fig. 15.2has...Ch. 15 - Air with a specific weight of 12.7N/m3 and a...Ch. 15 - Prob. 15.3PPCh. 15 - Prob. 15.4PPCh. 15 - Prob. 15.5PPCh. 15 - Prob. 15.6PPCh. 15 - Prob. 15.7PPCh. 15 - An orifice meter is to be used to measure the flow...Ch. 15 - A flow nozzle is to be installed in a 5-in Type K...Ch. 15 - An orifice meter is to be installed in a 12-in...Ch. 15 - A pitot-static tube is inserted into a pipe...Ch. 15 - A pitot-static tube is connected to a differential...Ch. 15 - A pitot-static tube is inserted in a pipe carrying...Ch. 15 - A pitot-static tube is inserted into a duct...Ch. 15 - A pitot-static tube is inserted into a duct...
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- Air flows at 180 m/sm/s through the pipe. The temperature is 400 KK and the absolute stagnation pressure is 280 kPakPa. Assume isentropic flow. For air R� = 286.9 J/[kg⋅K]J/[kg⋅K] and k� = 1.40 Determine the pressure within the flow. Express your answer using three significant figures.arrow_forwardA gas at a specified stagnation temperature and pressure is accelerated to Ma = 2 in a converging–diverging nozzle and to Ma = 3 in another nozzle. What can you say about the pressures at the throats of these two nozzlesarrow_forwardAn aircraft is designed to cruise at Mach number Ma = 1.1 at 12,000 m where the atmospheric temperature is 236.15 K. Determine the stagnation temperature on the leading edge of the wing.arrow_forward
- What is mass flow rate of a liquid flowing through a pipe? Derive Bernoulli’s equation.arrow_forwardmulti-stage high –pressure steam turbine is supplied with steam at a stagnation pressure of 7 MPa and a stagnation temperature of 5000C. The corresponding specific enthalpy is 3410kJ.kg. The steam exhaust from the turbine at a stagnation pressure of 0.7 MPa abs., the steam having been in a super-heated condition throughout the expansion. It can be assumed that the steam behaves like a perfect gas over the range of the expansion and that ᵞ = 1.3. Given that the turbine flow process has a small-stage efficiency of 0.82, determine (1) the temperature and specific volume at the end of the expansion; (2) the re-heat factor. The specific volume of superheated steam is represented by pv=0.231(h-1943), where “p” is in kPa, v is in m3/kg and “h” is in kJ/kg.arrow_forwardWhy when you observe at the inlet, the flow is almost uniform from radially pipe wall to center?arrow_forward
- Define the Under steady-flow conditions?arrow_forwardExplain vapor pressure, cavitation and continuity equation. Also, define Bernoulli’s equation with assumptions.arrow_forwardshow that the governing equation for axisymmetric stagnation flow is ϕ ′′′ + 2ϕϕ′′ − ϕ ′2 + 1 = 0 what is the thickness of viscous layer near the axisymmetric stagnation point?arrow_forward
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