Single-Course Danish 5 ECTS

Fluid Mechanics

Overall Course Objectives

To give a theoretical and practical background for the formulation and the solution of flow problems within energy and mechanical field, including turbomachinary.

Learning Objectives

• Analyze flows and parts of flows as laminar/turbulent, viscous/inviscid, steady/unsteady and compressible/incompressible and use properties of fluids and find values for the properties using tables, equations of state and EES.
• Analyze static pressures, forces and buoyancy forces.
• Evaluate whether Bernoulli’s equation or Energy equation is valid for a given flow.
• Use the control volume method for mass, momentum, angular momentum and energy.
• Use dimensional analysis and understand the physical significance of certain dimensionless numbers for given flows.
• Use rough estimates in fluid mechanics for pump systems and hydropower.
• Use flow components and measuring techniques.
• Use efficiencies and calculate energy consumption for flow processes and components.
• Understand and use principles, performance curves and velocity diagrams for flow machines such as fans, pumps, turbines and propellers.
• Understand the function of rotor and stator in compressors and turbines and understand the principles in different pumps and turbines, including Betz-limit for windmills.
• Use the computer software EES (Engineering Equation Solver) for the solution of flow problems.

Course Content

Classification and properties of fluids. Fluid statics. Control volume. Fluid kinematics and vector fields including velocity and acceleration field, divergence and rotation. Conservation of mass, momentum, angular momentum and energy for fluid mechanical systems. Bernoulli’s equation. Static and dynamic pressure. Dimensional analysis, modeling and similarity. Introduction to measurement techniques in fluid mechanics. Intern and Extern flows. Head loss calculations in pipes and pipe systems. Archimedes’ principle including buoyancy and stability. Drag and lift. Boundary layer theory, including velocity profiles. Turbo machinery, including centrifugal pumps, windmills, gas, steam, Pelton, Francis and Kaplan turbines. Application of velocity triangles.

Recommended prerequisites

62675/62694, Mechanics and Dynamics

Teaching Method

The teaching is based on ‘learning by doing’. The students follow lectures and exercises. There are computer simulations in EES and experiments with wind tunnel, pumps and ventilators.

Faculty

Remarks

Faggruppe: Mekanisk teknologi