EAS109 Tutor-Marked Assignment 01

This assignment is worth 8% of the final mark for EAS109 – Thermo-Fluid Mechanics.

Learning Outcome:

● Explain the fundamental of Thermodynamics and Fluid Mechanics.
● Recognise interrelationships underpinning the laws governing these two disciplines.
● Apply learnt content to explain and calculate thermodynamic and fluid flows and processes.
● Identify basic thermodynamic and fluid equations equipment for fundamental flow study.
● Describe and conduct thermodynamic and fluid experiments.
● Interpret computer simulations results and extract data to perform analyses.

What the EAS109 Tutor-Marked Assignment 01 asks you to do

EAS109 Thermo-Fluid Mechanics introduces the principles of thermodynamics and fluid mechanics that engineers use to analyse engines, pumps, piping systems and heat transfer equipment. You learn how energy, mass and momentum are conserved and how these laws connect the two disciplines.

This TMA is worth 8% of the final mark for EAS109. It tests whether you understand the fundamentals, can apply them to calculate properties of flows and processes, and can interpret experimental and simulation data. Markers want correct principles, clear calculations with units and sensible engineering interpretation.

EAS109 learning outcomes explained

Use these outcomes as a checklist while you plan your answers.

How to structure your EAS109 TMA01

1. Identify the system – decide whether it is closed or open and sketch it with boundaries and flows.
2. List given data and assumptions – for example steady flow, incompressible fluid or ideal gas.
3. Select the governing equations – first law, continuity, Bernoulli or the ideal gas law as appropriate.
4. Calculate step by step – carry units throughout and convert to SI before substituting.
5. Analyse experimental or simulation data – tabulate, plot and compare with theory.
6. Discuss and conclude – explain discrepancies, errors and what the results mean in engineering terms.

Key concepts to revise for EAS109

• First law of thermodynamics – the energy balance for closed systems and steady flow devices.
• Second law and entropy – explains efficiency limits and the direction of processes.
• Ideal gas law and property tables – essential for finding states of air, water and steam.
• Fluid statics – hydrostatic pressure and manometer calculations.
• Continuity equation – conservation of mass linking velocity and cross-sectional area.
• Bernoulli equation – relates pressure, velocity and elevation along a streamline, within its assumptions.
• Reynolds number – distinguishes laminar from turbulent flow.
• Experimental uncertainty – helps you judge how far results can be trusted.

Common mistakes to avoid

• Mixing gauge and absolute pressure, or using Celsius instead of kelvin in gas calculations.
• Applying the Bernoulli equation where friction, pumps or turbines make it invalid without modification.
• Dropping units or failing to convert them, which leads to answers that are out by orders of magnitude.
• Reporting simulation or experimental values without comparing them to theory.
• Writing vague conclusions that do not explain sources of error.

EAS109 TMA01 FAQs

What is the EAS109 TMA01 about?

It covers the fundamentals of thermodynamics and fluid mechanics, calculations of flows and processes, experiments and simulation data analysis. It is worth 8% of your final mark.

How should I present my calculations?

State the equation, list assumptions, substitute values with units and box your final answer. A short comment on whether the result is reasonable adds value.

How do I interpret simulation results?

Extract the relevant values, use them in your calculations and compare them with theoretical predictions, explaining any differences.

Can I get help with my EAS109 assignment?

Yes. Our Singapore-based subject tutors can guide you through the brief, explain the principles and help with structure and referencing so you can submit with confidence.

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