Homework

# Consider the thermodynamic efficiency of a Diesel engine.

Customer Question
Using equation (2.73) of your textbook...
Consider the thermodynamic efficiency of a Diesel engine. Using equation (2.73) of your
textbook, plot the efficiency of this type of engine for injection ratios ρ between 1and 5
(incrementing by 1) at compression ratios ε of 18, 20, 22, and 24. Note that this is ηth vs ρ
plot at the stated ε values. Describe your observations. Use MATLAB to plot the graphs.
Submitted: 2 years ago.Category: Homework
Show More
Show Less
Customer reply replied 2 years ago
1- 1/(k ε^k(rho^(k-1)/rho-1)) is equation 2.73
2/4/2016
Tutor: Ryan, Engineer replied 2 years ago
Ryan, Engineer
Category: Homework
Satisfied Customers: 9,136
Experience: B.S. in Civil Engineering
Verified

Hi,

Thank you for using the site. I'm sorry that you haven't received any reply until now. It seems that your question was initially placed in a different category, and has only recently been moved to the Math category.

I'll be happy to help you with this, but there are a couple of issues that need to be resolved first.

To begin with, I do not have access to MATLAB. I can produce the graphs, just not with MATLAB. If using MATLAB is an absolute requirement from your instructor, then I won't be able to help with this.

Secondly, assuming that a graphing utility other than MATLAB is acceptable, I need you to clarify the equation that needs to be graphed. The text representation that was included in your earlier posting could be interpreted a couple of different ways. Please review the document at the link below and let me know which (if either) of the two equations shown matches with Equation 2.73 in your text. If it is neither, is there a way that you could take a picture of the equation in your textbook and post that?

Equations

Finally, can you describe the desired results? By that, I mean, there are 5 different values of rho and 4 different values of the compression ratio. Is the goal to have:

1) all combinations of rho and the compression ratio on one graph, (i.e. one graph with 20 curves plotted on it), or

2) a separate graph for each value of rho, with each graph showing a curve for each value of the compression ratio (i.e. four curves on each graph), or

3) a separate graph for each value of the compression ratio, with each graph showing a curve for each value of rho (i.e five curves on each graph)

I look forward to hearing from you.

Regards,

Ryan

Customer reply replied 2 years ago
no worries...i have solved it
Tutor: Ryan, Engineer replied 2 years ago

Ok, no problem.

Category: Homework
Satisfied Customers: 3,040
3,040 Satisfied Customers
Experience: MIT Graduate (Math, Programming, Science, and Music)

Scott is online now

A new question is answered every 9 seconds

• Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
• Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

## What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

## Meet the Experts:

LogicPro

Engineer

5,731 satisfied customers

Expert in Java C++ C C# VB Javascript Design SQL HTML

Manal Elkhoshkhany

Tutor

4,551 satisfied customers

More than 5000 online tutoring sessions.

Linda_us

Finance, Accounts & Homework Tutor

3,138 satisfied customers

Post Graduate Diploma in Management (MBA)

Chris M.

M.S.W. Social Work

2,636 satisfied customers

Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)

F. Naz

Chartered Accountant

2,161 satisfied customers

Experience with chartered accountancy

Bizhelp

CPA

1,887 satisfied customers

Bachelors Degree and CPA with Accounting work experience

Seanna

Tutor

1,781 satisfied customers

3,000+ satisfied customers, all topics, A+ work

< Previous | Next >

Related Homework Questions
I need to do a Curve-fitting Project - Linear Model Gasoline
hello! I need to do a Curve-fitting Project - Linear Model Gasoline and Diesel Fuel Prices (dollar per gallon 1990-present) Id like to use this source: https://www.eia.gov/petroleum/gasdiesel/ any cha… read more
GLENN
Master of Mathematics
369 satisfied customers
The MPC uses the _____, which requires that a suspect must
The MPC uses the _____, which requires that a suspect must have done or omitted to do something that constitutes an important and sizable stage in the commission of a substantive offense.… read more
Chris M.
M.S.W. Social Work
Master's Degree
2,636 satisfied customers
For generation-skipping transfer purposes, which of the
For generation-skipping transfer purposes, which of the following is a skip person?Brother Adopted daughter Great-granddaughter Son… read more
Ray
Lawyer
Doctoral Degree
31,679 satisfied customers
F. Naz these questions are for can you to answer, Case1,
http://www.mediafire.com/file/e4b1wlqngprzmja/Case+1.pdf F. Naz these questions are for can you to answer, Case1, Step 1. I need you to find all the 30 form errors in the document and all the substanc… read more
F. Naz
Chartered Accountant
CA Finalist & Completed B.com
2,161 satisfied customers
I need the answers to these 9 exams from penn electronic
I need the answers to these 9 exams from penn foster electronic technician 2709A, 2709B, 2710A, 2710B, 2711A, 2711B, 2711C, 2712A, and 2712B… read more
Ashok Kumar
Master\u0027s Degree
291 satisfied customers
Can you solve why I'm getting this message. Windows 10. I'm
I'm getting this message when I try to attach .mdf file to may database using SQLExpress. I have uninstalled this several times. I've checked my administrative rights … read more
F. Naz
Chartered Accountant
CA Finalist & Completed B.com
2,161 satisfied customers
Trying to complete the WBS DICTIONARY for the Conveyor Belt
Hi Trying to complete the WBS DICTIONARY for the Conveyor Belt Project. … read more
F. Naz
Chartered Accountant
CA Finalist & Completed B.com
2,161 satisfied customers
Only after the _____ of committing a crime is a person
Only after the _____ of committing a crime is a person liable for criminal punishment under Anglo-American law.… read more
GLENN
Master of Mathematics
369 satisfied customers
When a defendant admits to the existence of all of the
When a defendant admits to the existence of all of the necessary legal elements for criminal liability but offers one or more legally recognized reasons why he or she should nonetheless be acquitted, … read more
Nisha Jones, Esq.
Juris Doctorate
2,439 satisfied customers
Which of the following tests for attempt liability requires
Which of the following tests for attempt liability requires that a perpetrator perform all of the steps that he or she believed necessary to commit an intended offense?… read more
Chris M.
M.S.W. Social Work
Master's Degree
2,636 satisfied customers
17 March 2018 11:50 1. The Federal Trade Commission enforces
17 March 2018 11:50 1. The Federal Trade Commission enforces this act concerning finance charge disclosure.A. The Truth in Lending Act B. The practice's fee structure C. The Credit Bureau D. The Equal… read more
Chris M.
M.S.W. Social Work
Master's Degree
2,636 satisfied customers
Sentence Patterns and Verb Expansion Part I Directions: In a
Sentence Patterns and Verb Expansion Part I Directions: In a separate word document, retype the sentence and draw vertical lines to identify the slot boundaries in the following sentences; label each … read more
GLENN
Master of Mathematics
369 satisfied customers
The Model Penal Code (MPC) requires that a device _____ in
The Model Penal Code (MPC) requires that a device _____ in order for a person to maintain nondeadly mechanical devices.… read more
Chris M.
M.S.W. Social Work
Master's Degree
2,636 satisfied customers
Need an Excel expert!! Is there a quick and easy way to
Need an Excel expert!! Is there a quick and easy way to convert a single column of 116 numbers into a single cell of all 116 numbers separated by a comma?… read more
GLENN
Master of Mathematics
369 satisfied customers
At common law, which of the following constitutes legally
At common law, which of the following constitutes legally sufficient provocation for an accused to claim a heat of passion defense?… read more
P. Simmons
Attorney
Doctoral Degree
35,833 satisfied customers
Abandonment is a valid defense, in those jurisdictions that
Abandonment is a valid defense, in those jurisdictions that recognize it as such, only when the accused has a genuine change of heart about committing the crime and clearly manifests the desire to aba… read more
N Cal Atty
Doctoral Degree
59 satisfied customers
This assignment is built on top of Assignment 6. Add
This assignment is built on top of Assignment 6. Add capability to handle Grade Book for different subjects (Chemistry and Computer Science). We will assume a maximum of five assignments and up to 40 … read more
LogicPro
Engineer
Bachelor of Technology
5,731 satisfied customers
For this homework, you are to make a Form that will hold
For this homework, you are to make a Form that will hold input fields for allowing a user to set the begin and end dates of a potential tour. This form will submit the information to a Servlet, which … read more
LogicPro
Engineer
Bachelor of Technology
5,731 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less