HW
The homework given prior to the first test was primarily focused on the initial concepts in MET330, Fluid Dynamics. The download links that follow provide the .pdf files of the completed questions in homeworks 1.1a, 1.1b, 1.2 and 1.3 (This file was too long to have in one file).
The first two files, homeworks 1.1a and 1.1b, are focused on reviewing the prerequisite material for this class. These include unit conversion, basic classifications of fluids, and other commonly used concepts in previous classes. The third file, homework 1.2, gives practice for the delta pressure equation that is a core concept of this class. This is that the change in pressure caused by a fluid is related to the height of the column of fluid and it specific weight. Finally, homework 1.3 is a combination of two concepts. The first is the function of pressure measuring devices like manometers. The second, relates to the force that fluids apply to submerged surfaces and introduces mechanisms like submerged gates.
In all the homework provided were a great work up to the questions for the test that was given after these four assignments were completed.
The next set of homework examples that were provided are the problems that were done in preparation for the second test of the semester. These homework assignments were focused are the calculation of energy or head losses due to flow of fluids. There were a number of situations that required energy loss be included in calculation and these showed the importance of proper manipulation of variables and formulas.
Homework 2.1 part A and B were primarily introductory problems to Bernoulli’s Principal and how to include head loss due to gravity. Homework 2.2 part A and B were somewhat of a leap in that is introduced the calculation of the friction factor, Reynold’s Number, and the head loss due to friction. These proved to be challenging as they all built on each other but in the end seemed reasonable once they were used enough. Homework 2.3 was based on concepts of open channel flow and how the wet perimeter and area of the flow cross section are found. Also the coefficient of roughness and the slope of the channel were used in conjunction with the previous in the formula to calculate the overall volumetric flow rate of the channel. Finally Homework 2.4, this was intended to introduce flow measuring devices and how they are included in the system’s piping. Additionally, it was shown that the pressure change and velocity change across these devices related to the total of the system and how these were calculated.
In all, these homework sets proved to be more challenging than the last and required more in depth calculations and understanding of the material.
The Homework 3.1 assignment focused on fluid flow and energy losses, introducing concepts like sudden contractions, head loss calculations, and friction factor determination for various fluids such as ethylene glycol and water. Students were required to use Bernoulli’s Principle and the Darcy-Weisbach equation to calculate energy losses in different system geometries, such as tees and heat exchangers. This assignment emphasized precision in applying formulas to complex scenarios, highlighting the importance of understanding energy loss mechanisms in practical fluid systems.
Homework 3.2 built on these concepts by delving deeper into pipe friction and system design. Tasks included calculating head loss, flow velocities, and pressures for various pipe configurations, taking into account both frictional and minor losses. The assignment required extensive use of provided tables and formulas to solve real-world problems, such as determining optimal pipe diameters and system pressures. Additionally, computational tools like Excel were utilized to streamline calculations, adding a layer of practicality and reinforcing the importance of accuracy in engineering design.
Homework 3.3 and 3.4 shifted focus to forces in fluid mechanics and pump performance analysis. Homework 3.3 explored the forces exerted by fluids on surfaces, requiring calculations based on flow rates and momentum changes. Homework 3.4 expanded on pump mechanics, addressing performance variations due to changes in impeller size and speed. Students interpreted performance charts to evaluate pump efficiency, power requirements, and head capacities under specific conditions. Together, these assignments emphasized the integration of theoretical principles with practical applications, enabling a comprehensive understanding of fluid dynamics and pump system design.
