User Account

All Pages

thermodynamics project , Mechanical Engineering

Assignment Help:
ES 347 - Thermodynamics Project Assigned: 3/28/2013 Due: 4/25/2013
Problem specification
5 kg of air is contained in a piston-cylinder device, initially at a pressure of 2MPa and a specific volume of 0.08m3/kg. The air then expands, as an ideal gas, through a polytropic process, with variable values of n, to a final specific volume of 0.30m3/kg.
Objective:
Write a MATLAB code to solve for the pressure and temperature variation throughout the expansion process and to calculate the work and heat produced in the processes for variable values of n.
Procedure: 1. Begin by defining the temperature at the initial state and then define the temperature and
pressure at the final state. Sketch a rough graph of what the process looks like on P-v coordinates. Write out by hand the equations and steps you would take to determine the actual P, T, and v at all points along the process. Identify unknowns, equations, constants, and calculation orders.
2. Using your hand calculations as a guide, write a simple MATLAB m-file to calculate the properties at points along the process (minimum of 20 points, but should be a variable that can be changed) using one of the values of n (I recommend using n=1.5). Plot P-v and T-v diagrams for the process using MATLAB.
3. Calculate the work performed for the process by integrating the curve of pressure versus specific volume. Use the “trapezoidal area method” for calculating the integral.
4. Assume that the specific internal energy for the air in this problem can be defined as a function of temperature as follows:
??(??) = (1.0344 * 10-4) * ??2 + (6.4476 * 10-1) * ?? + (1.3727 * 102)
Add code to your MATLAB program to calculate the specific internal energy for the process
using the information of the pressure and specific volume at each state. 5. Using conservation of energy and the work calculated, determine the amount of heat
transferred for each process. 6. Write a loop in the code to analyze the different values of n, or run the code for the different
values of n asked for below.
Deliverables 1. Hand calculations that outline planned MATLAB code. 2. MATLAB code (m-file) that calculates the state variables P, v, T, and u for the defined
process, and that calculates the work and heat for each process. 3. On the same graph, plot of P-v for this process with 4 different values of n: 1, 1.4, 1.5, 1.8. 4. Plot of P-v and T-v for n=1.5 on a single graph. Use the function plotyy. 5. Table summarizing results of work and heat as a function of n. 6. A brief paragraph detailing what you learned in this exercise and how useful you think these
skills will be for your future as an engineer. This is not a BS question, I want you to provide me with useful information about your experience. If you didn’t learn anything here because you already are a pro at MATLAB, say that!
For your reference, I have uploaded the m-file example_xy.m as an example of MATLAB programming and showing you some of the things you will need and can use.
I am happy to review any code problems you have, but I will not be checking code on the night before the due date, and it might take me a day or two to get to debugging any code that you send me. Therefore, plan ahead!
I will discuss the “trapezoidal area method” in class during the week of 4/1/2013.

please follow instruction

Related Discussions:- thermodynamics project

Angle of projection, A ball is thrown from a point with a speed V  at an an...

A ball is thrown from a point with a speed V  at an angle of projection  θ . From the same point and  at the same instant, a person starts running with a constant speed V/2 to catc

Engineering plastics, Engineering Plastics In this time this has becom...

Engineering Plastics In this time this has become clear to know, the plastics are utilized as engineering materials for machine parts, casting and bodies and for structure mai

Motion, Kennedy theorem

Kennedy theorem

Need of alternate conceptual system design, What do you mean by Management ...

What do you mean by Management Information System (MIS)? What are its advantages ? Also give the qualities of an ideal MIS. What is the basic need of alternate conceptual system

Mechanics, labbis theorem

labbis theorem

What is the function of a clutch in an automobile, (a) What is the function...

(a) What is the function of a clutch in an automobile? Illustrate the principle of friction clutches with the help of neat diagrams. (b) Discuss the working and construction of

Define the abrasive jet cutting machines, Define the Abrasive Jet Cutting M...

Define the Abrasive Jet Cutting Machines 1. Abrasive jet cutting machines which are used to cut sheet materials or to remove materials of work piece from a surface by generatin

Corrosion control in oil-treating equipment, Q. Corrosion Control in Oil-Tr...

Q. Corrosion Control in Oil-Treating Equipment? Bitumen provides adequate internal protection for Inlet Slug Catcher, FWKO and Treater. Due to high operating temperature, inter

Explain cutting speed-material removal rate & machining time, Determine- cu...

Determine- cutting speed, Material removal rate and Machining time. A 150 mm long 12.7 mm diameter stainless steel rod is being turned to 12.19 mm diameter on a centre lathe.

.safety observation subject, working with complete P.P.E

working with complete P.P.E

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd