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School of Chemical and Environmental Engineering

Now offering two distinct diplomas: Chemical Engineering and Environmental Engineering

Fluid Mechanics


School Environmental Engineering
Course Level Undergraduate
Course ID ENVE 221 Semester 3rd
Course Category Required
Course Modules Instruction Hours per Week ECTS

Lectures, practice exercises and laboratory sessions

Th=3, E=1, L=2
Course Type Scientific area
Instruction/Exam Language Greek
The course is offered to Erasmus students No
Course URL https//  (in Greek)



Learning Outcomes

Learning Outcomes:

  • Understanding fluid properties and their effects on basic problems
  • Understanding of basic hydrostatic principles
  • Understanding of basic momentum principles
  • Structure of the energy and the Bernoulli equation, understanding of their application to basic problems
  • Understanding the principles of dimensional analysis and the meaning of dimensionless numbers
  • Understanding of basic principles of kinematics: description of flow according to Euler, according to Lagrange, steady and unsteady flow, trajectory of particles and flow lines
  • Understanding of principles of energy losses in closed conduits in the case of turbulent flow and modeling of turbulent tensions with the contribution of turbulent viscosity.
  • Understanding of the term boundary layer
  • Understanding of the interaction mechanisms between fluids and solid bodies, understanding of basic flow types

Upon successful completion of this course the students will acquire new specific skills on the following subjects:

  • Ability to process experimental and numerical data
  • Ability to solve equations for basic flow types
  • Ability to solve practical problems with the aid of the Bernoulli and energy equations
  • Ability to solve problems related to hydrostatics and hydrodynamics
  • Ability to solve flow problems in closed conduits
  • Ability to solve problems with the use of dimensional analysis
General Competencies/Skills
  • Work Autonomously
  • Design and Management of Projects


  • Properties and characteristics of fluids,
  • Measurement Units,
  • Viscosity,
  • Continuity,
  • Density, Specific Volume, Specific Gravity,
  • Perfect Gases, Pressure, Vapor pressure,
  • Surface tension and capillary phenomena with applications in a porous medium (soil).
  • Pressure point,
  • Basic Equations Fluid Statics, measurements using a manometer in Environmental Applications,
  • Forces on submerged Flat and curved surfaces, buoyancy, forces on dams, sluice.
  • Types of Forces, Fundamental Laws (Conservation of Mass Principle, Second Law of Newton - momentum theorem, Principle of Conservation of Energy),
  • Concept and System Selected Volume Reporting continuity equation, momentum equation, equation of Energy,
  • Mass and Energy Balances in Environmental Systems,
  • Transfer of Pollutants in Aquatic Systems.
  • Non dimensional Numbers for Analysis of Environmental Systems, Dimensions and Units, Theorem P, Non-dimensional Parameters, Similarity, Reynolds Number, Froude Number,
  • Dimensional Analysis for Flow Models Closed Pipe and Plumbing Construction.
  • Permanent Two-dimensional flow between plates,
  • Flow in Streams, Rivers and closed conduits, major and minor losses,
  • Boundary layer,
  • Friction.


Lecture Method Direct (face to face)
Use of Information and Communication Technology Specialized software, Power point presentations, E-class support
Instruction Organisation Activity Workload per Semester
- Lectures & tutorial exercises 40
- Study, projects and literature review 72
- Tutorials 12
- 5 sets of lab exercises 26
Course Total 150

Assessment Method

Ι. Written final examination (85%) that includes:
   - Theoretical problems with data to be resolved.

ΙΙ. Laboratory exercises (15%).


  • Fluid Mechanics, Streeter/Wylie/Bedford
  • Fluid mechanics with engineering applications, Daugherty/Franzini/Finnemore


Course Instructor: Professor G. Karatzas (Faculty - EnvEng)
Lectures: Professor G. Karatzas (Faculty - EnvEng)
Tutorial exercises: Dr. E. Varouchakis (LTS -EnvEng)
Laboratory Exercises: Dr. E. Varouchakis (LTS -EnvEng)