ENGN3224 Fluid Mechanics and Heat Transfer (with ENGN6224)

How ENGN3224 is assessed

The shared 2026 syllabus controls 20% homework, 30% laboratories, 10% mid-semester quiz and 40% final. The official pages retain an indicative 20/20/10/50 split. ENGN6224 adds CFD Part B within the same 10% lab.

What ENGN3224 covers

Read Fluid Properties, Pressure and Statics as the foundation, Turbomachinery, Pump Curves and Cavitation as the main change in method, and Thermal Radiation and Enclosures as the final application of the course.

It is positioned as a thermofluids engineering course.

The shared course uses conservation equations across fluids and heat transfer, with an additional CFD task for ENGN6224.

Assessment in ENGN3224 is distributed as follows: 20% homework, 30% laboratories, a 10% mid-semester quiz and a 40% final examination

The operational assessment conditions matter here.

The final covers the whole course with greater emphasis on Weeks 7–12; current permitted-material conditions are controlled by the syllabus and live instructions.

What makes ENGN3224 demanding is concrete: choosing a physically valid model and keeping signs, units, regime and boundary conditions consistent through the calculation

Treat the ENGN3224 hurdle status as unconfirmed.

Check the current official course outline for any component-level pass rule before relying on the overall mark.

For enrolment planning, The current official pages publish course requisites; students should confirm eligibility in their program.

Read Fluid Properties, Pressure and Statics as the foundation, Turbomachinery, Pump Curves and Cavitation as the main change in method, and Thermal Radiation and Enclosures as the final application of the course.

Worked example · free

Check a pipe-and-pump operating point

Key terms

Pressure

Normal force exerted per unit area by a fluid. This chapter uses the concept when students calculate pressure, resultant force and equilibrium in static fluids.

Hydrostatic balance

Pressure variation balancing fluid weight in a fluid at rest. It helps explain the reasoning required to calculate pressure, resultant force and equilibrium in static fluids.

Buoyancy

Net upward pressure force equal to the weight of displaced fluid under the stated conditions. Its limit matters because gauge reference, geometry and density must be explicit.

Streamline

Curve everywhere tangent to the instantaneous velocity field. This chapter uses the concept when students classify a flow and apply energy balance only after checking assumptions.

Reynolds number

Ratio comparing inertial and viscous effects in a flow. It helps explain the reasoning required to classify a flow and apply energy balance only after checking assumptions.

Bernoulli equation

Mechanical-energy relation along a streamline under its stated assumptions. Its limit matters because viscous loss, pumps, turbines and unsteadiness require an extended relation.

Control volume

Defined region through whose boundary mass, momentum and energy may cross. This chapter uses the concept when students compute forces and reactions from control-volume balances.

Mass flow rate

Mass crossing a section per unit time. It helps explain the reasoning required to compute forces and reactions from control-volume balances.

Momentum flux

Transport of linear momentum through a control surface. Its limit matters because surface normals and velocity directions control the signs.

Material derivative

Rate of change following a moving fluid particle. This chapter uses the concept when students reduce governing equations using geometry, symmetry and boundary conditions.

Continuity equation

Local conservation equation for fluid mass. It helps explain the reasoning required to reduce governing equations using geometry, symmetry and boundary conditions.

Navier–Stokes equation

Momentum balance for a Newtonian fluid including pressure, viscous and body-force effects. Its limit matters because discarded terms must be justified rather than silently omitted.

Head loss

Mechanical-energy loss per unit weight caused by friction and fittings. This chapter uses the concept when students select pipe-loss or external-flow relationships from geometry and regime.

Boundary layer

Near-surface region where viscous velocity gradients are significant. It helps explain the reasoning required to select pipe-loss or external-flow relationships from geometry and regime.

ENGN3224 FAQ

Questions students ask in each ENGN3224 chapter

Which inputs and assumptions control the attempt to calculate pressure, resultant force and equilibrium in static fluids?

Calculate pressure, resultant force and equilibrium in static fluids. Lecture 1 develops properties, pressure measurement, forces on surfaces and buoyancy. Normal force exerted per unit area by a fluid. This chapter uses the concept when students calculate pressure, resultant force and equilibrium in static fluids. Chapter 01 · Fluid Properties, Pressure and Statics

What belongs in the structure used to classify a flow and apply energy balance only after checking assumptions?

Classify a flow and apply energy balance only after checking assumptions. Lecture 2 links kinematics, regime, continuity and Bernoulli applications. Curve everywhere tangent to the instantaneous velocity field. This chapter uses the concept when students classify a flow and apply energy balance only after checking assumptions. Chapter 02 · Flow Description, Reynolds Number and Bernoulli

Which inputs and assumptions control the attempt to compute forces and reactions from control-volume balances?

Compute forces and reactions from control-volume balances. The current sequence and homework solutions use integral balances for jets, bends and devices. Defined region through whose boundary mass, momentum and energy may cross. This chapter uses the concept when students compute forces and reactions from control-volume balances. Chapter 03 · Integral Mass and Momentum Balances

What should a student check while trying to reduce governing equations using geometry, symmetry and boundary conditions?

Reduce governing equations using geometry, symmetry and boundary conditions. Lecture 4 moves from local kinematics to continuity and momentum equations. Rate of change following a moving fluid particle. This chapter uses the concept when students reduce governing equations using geometry, symmetry and boundary conditions. Chapter 04 · Differential Conservation and Navier–Stokes

Which criteria should govern an attempt to select pipe-loss or external-flow relationships from geometry and regime?

Select pipe-loss or external-flow relationships from geometry and regime. Week 5 materials cover pipe networks, boundary layers, separation and drag. Mechanical-energy loss per unit weight caused by friction and fittings. This chapter uses the concept when students select pipe-loss or external-flow relationships from geometry and regime. Chapter 05 · Internal and External Viscous Flows

Which evidence helps students locate the operating point and check efficiency and cavitation margin?

Locate the operating point and check efficiency and cavitation margin. Lecture 6 and the pump lab connect performance curves, system resistance, efficiency and NPSH. Relationship between pump head and flow under specified speed and geometry. This chapter uses the concept when students locate the operating point and check efficiency and cavitation margin. Chapter 06 · Turbomachinery, Pump Curves and Cavitation

Which constraints shape the work needed to build a conduction resistance network and evaluate extended surfaces?

Build a conduction resistance network and evaluate extended surfaces. The thermal block begins with conduction, resistance and fins. Material property connecting temperature gradient to conductive heat flux. This chapter uses the concept when students build a conduction resistance network and evaluate extended surfaces. Chapter 07 · Heat-transfer Modes and Conduction

Which criteria should govern an attempt to choose and apply a convection correlation from geometry, regime and boundary condition?

Choose and apply a convection correlation from geometry, regime and boundary condition. Week 9 materials practise internal and external convection correlation selection. Proportionality connecting surface-to-fluid temperature difference to convective heat flux. This chapter uses the concept when students choose and apply a convection correlation from geometry, regime and boundary condition. Chapter 08 · Convection and Boundary-layer Correlations

What must be brought together to combine energy balance, heat-exchanger method and CFD validation?

Combine energy balance, heat-exchanger method and CFD validation. Week 10 and the CFD lab join exchanger calculations to numerical model verification; Part B is postgraduate-only. Effective temperature driving force for a heat exchanger under defined terminal temperatures. This chapter uses the concept when students combine energy balance, heat-exchanger method and CFD validation. Chapter 09 · Heat Exchangers and CFD

Which inputs and assumptions control the attempt to calculate surface and enclosure radiation exchange with geometry visible?

Calculate surface and enclosure radiation exchange with geometry visible. The final lecture covers blackbody laws, real surfaces, view factors and radiation networks. Ideal surface absorbing all incident radiation and emitting the maximum possible thermal radiation. This chapter uses the concept when students calculate surface and enclosure radiation exchange with geometry visible. Chapter 10 · Thermal Radiation and Enclosures

How to study for the exam

Retrieve the course map, practise the recurring method—draw the control volume and boundary conditions, select conservation and constitutive relationships with units and signs visible, calculate the flow or heat-transfer result, then test dimensions, limiting behaviour and regime assumptions—on changed scenarios, and verify every operational assessment detail in the live institutional system.

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