SD2625 Computational Road Vehicle Aerodynamics 3.0 credits

Fordonsaerodynamiska beräkningar

The course is an advanced course or complement to the course SG2211 Vehicle Aerodynamics, given in parallel by the Mechanics department. It will be offered to those students that are willing to know more about Vehicle Aerodynamics with special focus on computations.

The course has two major purposes

  • To give the students experience of running a commercial CFD program. The students should see examples of good and bad results, respectively and briefly understand what influences the outcome of a CFD program.
  • To show effects of geometry and velocity changes on the flow and on e.g.drag.
  • Education cycle

    Second cycle
  • Main field of study

  • Grading scale

    A, B, C, D, E, FX, F

Course offerings

Spring 19 for programme students

Spring 20 for programme students

Intended learning outcomes

At the end of the course the students should be able to:

  • Explain the key concepts involved in CFD for road vehicle aerodynamics in terms of modelling simplifications, accuracy, performance and validation.
  • Perform CFD simulations using software and troubleshoot basic problems that arise.
  • Reflect on and choose appropriate modelling and analysis approaches for road vehicle aerodynamics applications.
  • Evaluate and critically judge simulation results in terms of errors and uncertainties in order to suggest improvements from both physical and computational modelling perspectives.

Course main content

The course covers the main considerations and attributes of computational fluid dynamics (CFD) that are specifically relevant for its application to road vehicle aerodynamics; the numerical solving of partial differential equations using a time and space discretization schemes; the choice of boundary conditions and initial data; the modelling of turbulent flow and approximations included in RANS, LES, DES and DNS; The course has five lectures: 1. Introduction, 2. Discretisation in space and time, 3. Grids, 4. Boundary and initial conditions, and 5. Turbulence modelling. There are also five computer labs in which case studies are explored the CFD software Fluent. 

Eligibility

Basics course in fluid mechanics, such as SG1217 (for T), SG1220 (for M), SG1223 (for F), or equivalent.

Literature

Kopior. Kursen följer några av de kapitel i boken Computational Fluid Dynamics, finita volym-metoden, 2nd ed. HK Versteeg, W. Malalasekera, Pearson, Prentice Hall, 2007.

Examination

  • PRO1 - Project, 3.0, grading scale: A, B, C, D, E, FX, F

The examination is a written report.

In addition, to pass the course, lab reports for lab 1, 2 and 3 and participation in lab 4 is compulsory.

Requirements for final grade

To be approved at the course the student must

  • Perform a small project in lab 5 that is presented in a written individual full report of acceptable quality and have the report approved.
  • Perform the work in lab 1-3 and present the work in short individual reports. The scopes of the reports are given in the lab instructions.
  • Perform the work in lab4 and participate and contribute to the oral discussion at lab 4. The scope of the report is given in the lab instructions.

Offered by

SCI/Aeronautical and Vehicle Engineering

Examiner

Ciarán O'Reilly <ciaran@kth.se>

Version

Course syllabus valid from: Spring 2019.
Examination information valid from: Autumn 2007.