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Instructions: Answer each of the following questions. You may write by hand or type. However, you are expected to present your work clearly and neatly. Bulleted responses are acceptable; you don't need to type a full report. Make sure to communicate which question you are answering. Show your steps for any calculations to receive credit. You may discuss the concepts with your colleagues. However, you are expected to perform this work on your own. Lab 1: Orifice and Venturi Flow Meters: Identify the independent and dependent variables in this experiment. What method did we use to control each independent variable? What method did we use to measure each independent variable? What method did we use to measure each dependent variable? Estimate the uncertainty in each measured (independent and dependent) variable. Consider at least one systematic and one random error source. Propagate the uncertainty in these measured variables through the computed results. Was uncertainty in the measured variables the cause of the greater than unity venture discharge coefficient? Lab 2: Pitot Static Probe: Identify the independent and dependent variables in this experiment. What method did we use to control each independent variable? What method did we use to measure each independent variable? What method did we use to measure each dependent variable? Estimate the uncertainty in each measured (independent and dependent) variable. Consider at least one systematic and one random error source. Propagate the uncertainty in these measured variables through the computed results. This lab provided two independent measurements that can be used to compute the flow velocity:
(1) the directly-measured dynamic pressure and
(2) the computed difference between the total and static pressures. Compute and plot the velocity at each probe location using each method. Do the values agree within the uncertainty that you estimated? Discuss possible reasons that the values differ. Lab 3: Flow Visualization in a Smoke Tunnel Find streamline images of 3 objects (from books and/or the internet). Identify separations and stagnation/dividing lines on each image. Comment on the design of the object. o What do the streamlines show you about the design of the object for its intended purpose? o For example, the streamlines over the truck models during the lab showed the drag-reducing function of the fairing over the cab. Be sure to cite the source of any image you copy.
A turbojet is flying with a velocity of 900 ft/s at an altitude of 20,000 ft, where the ambient conditions are 7 psia and 108F. The pressure ratio across the compressor is 13, and the temperature at the turbine inlet is 2400 R.
A piston-cylinder device contains helium gas initially at 145 kPa, 20 degrees C, and 0.5 m^3. The helium is now compressed in a polytropic process (PV^n = constant) to 390 kPa and 140 degrees C. Determine the heat loss or gain during this process.
consider fully developed laminar flow between parallel plate. the heat flux through the walls of the chanel is uniform.
Will it sink naturally or need to be weighted to stay at the bottom? Determine the required force to keep it in position if it is molded with 125 cm3 of polyethylene.
The total length of the 0.75-in.- diameter galvanized iron pipe between point (1) and the exit is 21 in. Determine the pressure needed at point (1) to produce this flow.
If the exchanger were operated in counterflow with the same overall coefficient and inlet temperatures, what would be the reduction in the required length relative to the value found in part (a)?
Calculate the required ratio of the volume flow rate in the shell to that in the tube if the average velocity of flow is to be the same in each.
When an exhaust fan of mass 380 kg is supported on springs with negligible damping, the resulting static deflection is found to be 45 mm.
1kg of superheated r-134a at 10 bar and 150oc is cooled and condensed in a cylinder at constant pressure. how much heat
a 3000-lb car accelerates under constant power from 60 mileh to 90 mileh on a 0.25 mile straight level test track.
Calculate the horizontal reaction force on the stop sign support. What, if anything, can you conclude about the fluid flow characteristics in the vertical direction for this situation?
Write an Matlab m-file to solve this problem with Runge-Kutta method. Solve the concentration of T1 and T2 (or salt content) as function of time (up to 100 minutes). Both T1 and T2 are mixing tanks (assume immediate mixing).
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