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

Explain action and reaction of force , Explain action and reaction of force...

Explain action and reaction of force: Two bodies A and B are in contact at point ' O '. Body A Press against body B. Thus action of body A on the body B is F . React

Performance of heat engine - thermodynamics , Performance of Heat engine: ...

Performance of Heat engine: Performanc e of HP:   It is measured by thermal efficiency that is the degree of useful conversion of heat received into work.

Classification of electrodes, CLASSIFICATION OF ELECTRODES The classifica...

CLASSIFICATION OF ELECTRODES The classification system used in the specification AWS A 5.1 which is for carbon steel electrodes follows established pattern for AWS filler metal s

Find out the components of the force, Find out the components of the force:...

Find out the components of the force: The frame of a certain machine accelerates to the right at 0.8 g m/sec 2 . As illustrated in Figure, it carries a uniform bent bar ABC we

Thermodynamics, klfjaljf jlas jfklsj flasj; flkjs fklja sklfj ak;lsfj lkajs...

klfjaljf jlas jfklsj flasj; flkjs fklja sklfj ak;lsfj lkajsf; kljas fkl;ajsd flk;jads fklasjdfl kjkl fjdaskl fjdsklafj ksad ,ma,v. askjlvj kljdfiojajofj adjfkldsj fkljasdf lkjads;

Resultant of non coplanar concurrent force system, Resultant of Non coplana...

Resultant of Non coplanar concurrent force system: How do you find resultant of Non coplanar concurrent force system? Sol.: The resultant of non concurrent force system

Machien element, assumptions made in deriving a bending formula

assumptions made in deriving a bending formula

What are the reasons behind poor pick-up of motor cycle, (a) Why does engin...

(a) Why does engine overheat and what will happen if engine overheats? (b) Why engine does not start in wet or damp weather? (c) What may be the causes if engine dose not sta

Implementation of material requirement planning, Implementation of Material...

Implementation of Material Requirement Planning: The total requirements for a material from an MRP schedule are given in the following table :

Drawing instruments, eraser

eraser

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