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Modeling and Simulation of Turbulent Flows (CFD4)

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WS 2017/18 - SoSe 2023

English

Modeling and Simulation of Turbulent Flows (CFD4)

6

Reiß, Julius

benotet

Portfolioprüfung

Zugehörigkeit


Fakultät V

Institut für Strömungsmechanik und Technische Akustik

35311400 FG Numerische Fluiddynamik

Physikalische Ingenieurwissenschaft

Kontakt


MB 1

No information

office@tnt.tu-berlin.de

http://www.tu.berlin/cfd

Learning Outcomes

The aim of this module is to present common modeling approaches for the numerical treatment of turbulent flows and to show their influencing parameters. The underlying physics upon which turbulence models are built will be addressed keeping in mind application-oriented issues. Notably, the students will be enabled to critically evaluate and discuss the modeling results. For this purpose, the study of individual models and the implementation of evaluation criteria in specific programming codes will be required. The students will compare different models and methods of solution against each other and apply them to different flow problems. They shall also be enabled to systematically solve new simulation cases using appropriate methods.

Content

Turbulent transport mechanisms are based on the interaction of temporal and spatial fluctuations of pressure, density and velocity, which spread over a wide range of scales. A detailed prediction of the extremely complex phenomenon requires the resolution of all those scales by using appropriate numerical methods. To this end, an extremely fine discretization in space and time shall be used. Since, for industrial applications, this is often not possible due to too high computing costs, many simulation methods which model the influence of the turbulent fluctuations on the flow, instead than compute them directly, have been developed. The quality and effectiveness of numerical simulations which implement these methods is decisively case-dependent and rely on a proper calibration of some model parameters. For this reason, this course will focus on mathematical principles, prerequisites and characteristics of turbulence modeling methods, staggered according to their degree of modeling and resource usage. The most important models are classified and examined from a physical point of view as regards their importance and applicability, introducing the necessary basic notions of turbulent flows. In addition, the course deals with practical aspects of flow simulation (boundary conditions, grid generation, evaluation criteria of the results, etc.). The understanding of the usability and practical relevance of individual methods will be supported by their implementation and investigation in simple, but significant, flow configurations.

Module Components

Pflicht:

All Courses are mandatory.

Course NameTypeNumberCycleLanguageSWSVZ
Modellbildung und Simulation turbulenter StrömungenIV0531 L 330SoSeEnglish4

Workload and Credit Points

Modellbildung und Simulation turbulenter Strömungen (IV):

Workload descriptionMultiplierHoursTotal
Attendance15.04.0h60.0h
Preparation15.08.0h120.0h
180.0h(~6 LP)
The Workload of the module sums up to 180.0 Hours. Therefore the module contains 6 Credits.

Description of Teaching and Learning Methods

Presentation and discussion of the theoretical content and partial derivation of different methods and models, as well as approaches to the solution. Exercises at the computer aimed to perform a complete data post-processing and model testing in indicative turbulent flow configurations. Several programs and data sets will be provided.

Requirements for participation and examination

Desirable prerequisites for participation in the courses:

a) compulsory: fluid dynamics, general knowledge of programming languages, numerical analysis. b) desirable: CFD2, knowledge of MATLAB and/or GNU Octave computing environment.

Mandatory requirements for the module test application:

This module has no requirements.

Module completion

Grading

graded

Type of exam

Portfolio examination

Type of portfolio examination

100 Punkte insgesamt

Language

English

Test elements

NamePointsCategorieDuration/Extent
Presentation30oral30 minutes
Programming project70practical4 weeks

Grading scale

This exam uses its own grading scale (see test description).

Test description (Module completion)

Programming project (70 Points) Presentation (30 Points) Grades: 95,0 to 100,0 Points ... 1,0 90,0 to 94,9 Points ..... 1,3 85,0 to 89,9 Points ..... 1,7 80,0 to 84,9 Points ..... 2,0 75,0 to 79,9 Points ..... 2,3 70,0 to 74,9 Points ..... 2,7 65,0 to 69,9 Points ..... 3,0 60,0 to 64,9 Points ..... 3,3 55,0 to 59,9 Points ..... 3,7 50,0 to 54,9 Points ..... 4,0 0,0 to 49,9 Points ....... 5,0

Duration of the Module

The following number of semesters is estimated for taking and completing the module:
1 Semester.

This module may be commenced in the following semesters:
Sommersemester.

Maximum Number of Participants

The maximum capacity of students is 20.

Registration Procedures

Online registration in the first week of the semester

Recommended reading, Lecture notes

Lecture notes

Availability:  unavailable

 

Electronical lecture notes

Availability:  unavailable

 

Literature

Recommended literature
Ferziger & Peric: Computational Methods for Fluid Dynamics
Fröhlich: Large-Eddy Simulation turbulenter Strömungen
Piquet: Turbulent Flows: Models and Physics
Pope: Turbulent Flows
Rotta: Turbulente Strömungen
Wilcox: Turbulence Modelling for CFD

Assigned Degree Programs


This module is used in the following Degree Programs (new System):

Studiengang / StuPOStuPOsVerwendungenErste VerwendungLetzte Verwendung
This module is not used in any degree program.

Students of other degrees can participate in this module without capacity testing.

Miscellaneous

No information