Thermofluids Assignment

Part 1

 For this part of the assignment, you are allocated one set of data, Table 1 and Appendix 1. This is to ensure you have an individual set of data.

Don't use plagiarized sources. Get Your Custom Essay on
Thermofluids Assignment
Get a plagiarism free paper Just from $13/Page
Order Essay




Data Set


h1 (m) h2 (m) D1 (mm) D2 (mm) Q (l/s) η (%)
 (A)  1.5 (B)  20 (C)  300 (E)  600 (F)  500 (G)   85
(H)  2.0 (J)  18 (K ) 250 (L )  650 (M)  460 (N)  80
(P)  2.5     (R)  24 (S) 400 (T)  700 (U)  610 (V )  75


Table 1



A storage reservoir supplies water to a pressure turbine, Figure 1, under a head of h2. When the turbine draws Q of water the head loss in D1 mm diameter supply line amounts to 2.5m (assume this value in all cases for this assignment).  Determine the pressure intensity at the entrance to the turbine.                                                                                               (20 marks)


If a negative pressure of 30 KN/m2 exists at the D2 mm section of the draft tube h1 below the supply line, estimate the energy absorbed in the turbine in kW neglecting all frictional losses between the entrance and the exit of the turbine.                                                            (20 marks)


Hence find the output of the turbine assuming an efficiency of η %.                          (5 marks)





You may assume that the conservation of energy between sections 2 and 3 can be written as:


Where Et is the energy absorbed by the machine/unit weight of water flowing.

Total energy absorbed by the machine, that is, the input energy = Et x W

Where W = weight of water flowing through the turbine per second.


Efficiency, η = Output/Input









Part 2.

For this part of the assignment, you are allocated one value from each of the categories defined below, Table 2 and Appendix 1. This is to ensure you have an individual set of data.


Data Set  
Pipe diameter, D (m) (a)  0.2 (b)  0.25 (c)  0.3


Pipe relative roughness ε/D (r)  0.002 (s)  0.004 (t)  0.006


Volumetric flow rate Q (m3/s) (w)  0.01 (x)  0.02 (y)  0.03



Table 2

The dynamic viscosity μ and density ρ of water may be assumed constant, as follows: μ = 0.0013 kg/m.s; ρ = 1000 kg/m3.

The information contained in the Moody diagram is also described by the Colebrook-White equation:

In this equation, the usual notation applies.

  • Briefly explain why it is difficult to find f from the Colebrook-White equation using normal algebraic methods, even when the relative roughness and Reynolds number are known.                                                                        (10 marks)

(b)      Check the validity of the equation using the data you were assigned in Part 1 of the assignment.                                                                                                 (15 marks)

(c)       At large Reynolds numbers, the term      in the above equation is often set to zero. Estimate f using both the Moody chart (annotate Figure 2 to show how this is derived), and the modified equation, for the case where ε/D = 0.003 and Re = 4 × 107 and comment on whether or not you think this is a valid approximation for these values.                                                                                                            (10 marks)

Presentation: This mark will be awarded based on the legibility and professionalism of the presentation.                                                                                                                    (20 marks)


The results chart on Page 5 MUST be submitted with all calculations.


Figure 2


  • All working out must be shown.


  • Marks will be lost for untidy work.


  • Always state units with your final answers.


  • You may write your answers by hand, or you may type them. You will not be penalised for writing your answers by hand, as long as they are neat and properly laid out.


  • If you type your answers, you are advised to become familiar with the Word equation

editor. It will take you longer, but will be a good investment in time, as you will find it

useful at some point during your studies.


  • All work found to have been plagiarised will be reported to the University and will be forwarded for consideration as Misconduct and you will be penalised accordingly.




Results Chart of Summary of Numerical Answers

(This Chart MUST be submitted with your work)*





Student Number:



Enter the values of  your Data Set


h1 (m) h2 (m) D1 (mm) D2 (mm) Q (l/s) η (%)



Enter the values of your Data Set

Pipe diameter, D (m)  
Pipe relative roughness ε/D  
Volumetric flow rate Q (m3/s)  





Student’s value


Tutor’s Comment


V1 (m/s)


V2 (m/s)


P2 (kN/m2)


Et (m)


W (KN/s)


Output (kN)


f from Moody chart


f Modified


(*) All calculations carried out to obtain the values entered in the results table above MUST be included as part of your submission.  Values entered above should have the units indicated.

Master Homework
Order Now And Get A 20% Discount!
Pages (550 words)
Approximate price: -

Advantages of using our writing services

Custom Writing From Scratch

All our custom papers are written by qualified writers according to your instructions, thus evading any case of plagiarism. Our team consists of native writers from the USA, Canada, and the Uk, making it convenient for us to find the best to handle your order.

Unlimited Free Revisions

If you feel your paper didn't meet all your requirements, we won't stop till it's perfect. You're entitled to request a free revision within 7 days after we submit your paper.

Quality Writing In Any Format

If you have issues with citing sources and referencing, you need not worry. Our writers are highly knowledgeable in referencing, including APA/MLA/Havard/Chicago/Turabian and all other formatting styles.

Fast Delivery And Adherence To The Deadline

All our custom papers are delivered on time, even the most urgent. If we need more time to perfect your paper, we may contact you via email or phone regarding the deadline extension.

Originality & Security

At Master Homework, your security and privacy is our greatest concern. For this reason, we never share your personal information with third parties. We use several writing tools to ensure your paper is original and free from plagiarism.

24/7 Customer Support

Our agents are online 24 hours a day, 7 days a week, and are always ready to serve you. Feel free to contact us through email or talk to our live agents whenever you need assistance with your order.

Try it now!

Calculate the price of your order

We'll send you the first draft for approval by at
Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

We work nonstop to see the best client experience.


Flexible Pricing

We offer pocket-friendly prices that coincide with the preferred client's deadline.


Admission help & Client-Writer Contact

Our support team is always ready to ensure vital interaction between you and the writer whenever you need to elaborate on something.


Paper Submission

We deliver our papers early within the stipulated deadlines. We are glad to help you if there should be an occurrence of any alterations required.


Customer Feedback

Your review, positive or negative, is of great concern to us and we take it very seriously. We are, consequently adjusting our policies to ensure the best customer/writer experience.