Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

Problem specification:

5 kg of air is contained in the 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, via a polytropic process, with variable values of n, to a final specific volume of 0.30m3/kg.

Objective:

prepare down a MATLAB code to solve for the pressure and temperature variation all through the expansion process and to compute the work and heat produced in the processes for variable values of n.

Procedure:

A) Start by defining the temperature at initial state and then define the temperature and pressure at final state. Sketch a rough graph of what the process looks like on P-v coordinates. prepare out by hand the equations and steps you would take to find out the actual P, T, and v at all points all along the process. Identify unknowns, equations, constants and calculation orders.

B) By using your hand calculations as a guide, prepare a simple MATLAB m-file to compute the properties at points all along the process (minimum of 20 points, however must be a variable that can be changed) by using one of the values of n (I recommend using n = 1.5).  Plot P-v and T-v diagrams for the process by using the MATLAB.

C) Compute the work performed for the process by integrating the curve of pressure versus specific volume. Use the ‘trapezoidal area method’ for computing the integral.

D) Suppose that the specific internal energy for the air in this problem can be defined as the function of temperature as shown below:

 u(T) = (1.0344 ∗ 10−4) ∗ T2 + (6.4476 ∗ 10−1) ∗ T + (1.3727 ∗ 102)

Add code to your MATLAB program to compute the specific internal energy for the process by using the information of the pressure and specific volume at each and every state.

E) Using conservation of energy and the work computed, find out the amount of heat transferred for each process.

F) prepare a loop in the code to analyze the various values of n, or run the code for the distinct values of n asked for below.

Deliverables:

A) Hand calculations which outline planned MATLAB code.

B) MATLAB code (m-file) which find outs the state variables P, v, T, and u for the defined process, and which find outs the work and heat for each process.

C) On same graph, plot of P-v for this process with 4 different values of n: 1, 1.4, 1.5, 1.8.

D) Plot of P-v and T-v for n=1.5 on a single graph. Use the function plotyy.

E) Table summarizing results of work and heat as a function of n.

F) A brief paragraph detailing what you learned and how useful you think such skills will be for your future as an engineer.

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M9610

Have any Question? 


Related Questions in Mechanical Engineering

There are 3 x 103 spheres in a box calculate the number of

There are 3 x 10 3 spheres in a box. Calculate the number of different combinations for the spheres in order to have 1100 spheres in the front third of the box. Assuming that the distribution is normal, calculate the pro ...

Linear motion actuator with feedback controlanalyses and

Linear Motion Actuator with Feedback Control Analyses and Simulations Provide complete mathematical modeling of the system and its components (free body diagrams and differential equations are required). Provide a comple ...

Part 1 key engineering terms fill in the blanks -1

Part 1 Key Engineering Terms: fill in the blanks - 1. Phase: a _____________________________________ homogeneous and distinct portion of material system. 2. Degrees of freedom: number of variables that can be changed ___ ...

When choosing a bolting material we must consider its

When choosing a bolting material we must consider its affect on the clamping force to be created by those bolts in service. Name two important aspects of the clamping force which will be affected, in part at least, by th ...

One excited state of the sodium atom lies at 25 73986 cm1

One excited state of the sodium atom lies at 25 739.86 cm1 above the ground state, another lies at 50 266.88 cm-1 . Suppose they are connected by a perturbation equivalent in energy to (a) 100 cm -1 , (b) 1000 cm -1 , (c ...

Assignmentfor this homework you will be creating scripts in

ASSIGNMENT For this homework you will be creating scripts in SciLab. You will turn in electronically, each of the scripts requested below. This is not a group project, so do your own work. Contact me if you have any ques ...

1 how do the magnitudes of the biceps force b and joint

1. How do the magnitudes of the biceps force B and joint reaction J change if the total weight w of the forearm and hand are included in the analysis and are assumed to be uniformly distributed over the forearm length L? ...

A solid circular shaft of 40 mm diameter is to be replaced

A solid circular shaft of 40 mm diameter is to be replaced by a hollow circular tube. If the outside diameter of the tube is limited to 60 mm, what must be the thickness of the tube for the same linearly elastic material ...

Gas turbine engines are mostly seen in aircraft while

Gas turbine engines are mostly seen in aircraft, while piston combustion engines are mostly seen in ground vehicles. Which advantages and disadvantages of these engines have caused them to be favorable for their respecti ...

The jaws of the bolt cutter shown are connected by two

The jaws of the bolt cutter shown are connected by two links AB. The cross-sectional area of each link is 750 mm 2 . (a) What average normal stress is induced in each link by the 90 N forces exerted on the handles? (b) T ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro