Question: Air flows down a variable area duct. Measurements indicate that the pressure is 80 kPa, the temperature is 5C, and the velocity is 150

Air flows down a variable area duct. Measurements indicate that the pressure is 80 kPa, the temperature is 5C, and the velocity is 150 m/s at the entrance of the duct (section 1). Estimate, assuming incompressible flow (Bernoulli's equation), the (a) velocity and (b) pressure at section 2 of the duct, where the duct area is half that of section 1 (A2 = 0.5A). Use the ideal gas law to determine density in both sections and (c) comment on the validity of the incompressible flow assumption in this situation.

Step by Step Solution

★★★★★

3.34 Rating (148 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The image you provided contains a fluid mechanics problem asking to estimate the velocity and pressure at a second point in a duct assuming incompress... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mechanical Engineering Questions!

Describe strategies (using share options when appropriate) which could be used to take advantage of the following situations: (1)high volatility in share prices; (2)stable share prices; (3)share...

Through a combination of legal study and a targeted examination of TikTok\'s business and associated risks, your team can provide a comprehensive knowledge of the opportunities and problems...

During the quarter ended 3/31/2015, Clarke Biscuits Inc. collected $100 of cash from customers, paid $60 of cash to suppliers, paid $30 of cash to employees and other creditors, and recorded a $5...

ondauir ( evshogque (d Print Version - Cluster 4 saw leaves at probhow (9 BSBWOR301 - Organise personal work priorities and development d neo holnw HLTWHS006 - Manage personal fall s el (d stressors

5-43C Consider an adiabatic turbine operating steadily. Does the work output of the turbine have to be equal to the decrease in the energy of the steam flowing through it? 5-44C Consider an air...

5-180 Determine the power input for a compressor that compresses helium from 150 kPa and 20C to 400 kPa and 200C. Helium enters this compressor through a 0.1-m2 pipe at a velocity of 15 m/s. 5-181...

Eastern Cola is considering the purchase of a special-purpose bottling machine for $24,000. It is expected to have a useful life of 4 years with no terminal disposal value. The plant manager...

Air Flows Through A Constant Area Duct. At The Inlet the temperature, pressure, velocity are - 5 0 C , 5 3 kpa and 1 6 7 m / s . Heat is added from outside into the flow. 1 - find the maximum heat...

A gas with a molar mass of 4 and a specific heat ratio of 1.67 flows through a variable area duct. At some point in the flow, the velocity is 200m/s and the temperature is 30C. Find the Mach number...

Air flows in a frictionless, adiabatic duct at M = 0.6 and P 0 = 500 kPa. The cross-sectional area of the duct is 6 cm 2 and the mass flow rate is 0.5 kg/s. If the area of the duct near the exit is...

The indices of refraction of fused silica and a soda???lime glass within the visible spectrum are 1.458 and 1.51, respectively. For each of these materials determine the fraction of the relative...

Centerville is the headquarters of Greedy Cablevision Inc. The cable company is about to expand service to two nearby towns, Springfield and Shelbyville. There needs to be cable connecting...

A group of five people consists of two women, Alice and Betty, and three men, Carl, David and Ed. i Three of these five people are chosen at random to be a chairperson, a treasurer and a secretary....

Dr. Patel is concerned about the long wait times in his office. The following table presents six random observations for the patient waiting times over a period of 12 days. Observations (mins) Day 1...

Find ag and w; for the slider-crank linkage in the position shown in Fig. 4.10. The crank AA* (link 2) is driven at a constant angular velocity of 10 rad/s CCW. Point B is the axis of the revolute...

Let u(t) = 2ti+ (t- 1)j-8k. Compute the derivative of the following function. %D (114 + 21) u(t) Select the correct choice below and fill in the answer box(es) to complete your choice. Di+Dj+ [ O A....

Let u = (8,5) and v = (6,7). Express 10u + 4v in the form (a,b). 10u + 4v = (Simplify your answers.)

Bureaucratic forms of management tend to produce holding pattern management within the institution.Thuefile

An insulated piston-cylinder device initially contains 0.2 m3 of R-134a, half (by volume) of which is in the vapor phase. The mass of the piston maintains a constant pressure of 200 kPa inside. A...

Air enters the turbine of an Ericsson cycle at 1000 kPa and 1200 K, with a mass flow rate of 1 kg/s. The temperature and pressure at the inlet to the compressor are 250 K and 100 kPa respectively....

An electric water heater works by passing electricity through an electrical resistance placed inside the flow of liquid water as shown in the accompanying animation. The specific internal energy and...

For each lettered part, a through c, examine the two given sets of numbers. Without doing any calculations, decide which set has the larger standard deviation and explain why. Then check by finding...

How many points do football teams score in the Super Bowl? Here are the total numbers of points scored by both teams in each of the first 48 Super Bowl games: 45, 47, 23, 30, 29, 27, 21, 31, 22, 38,...

A clerk entering salary data into a company spreadsheet accidentally put an extra "0" in the boss's salary, listing it as $2,000,000 instead of $200,000. Explain how this error will affect these...