MODELING OF TURBULENCE_FALL 25-26

 

14981 MAK 608E MODELING of TURBULENCE  2025/2026 Fall

Lecturer: Seyhan Onbaşıoğlu

Room #:  537

e-mail: onbasiogl1@itu.edu.tr; suonbasioglu@gmail.com

Course hours: Thursday.   09.30-12.30         

Office Hours: Upon appointment

Prerequisites:

Advanced knowledge of Fluid Mechanics and Heat Transfer, Transport Phenemona and Computational Fluid Dynamics.

Textbooks:

1-    Davidson, L., Fluid mechanics, turbulent flow and turbulence modeling,  July 2025.

https://www.tfd.chalmers.se/~lada/postscript_files/solids-and-fluids_turbulent-flow_turbulence-modelling.pdf

 

2-    Schiestel, R., Modeling and Simulations of Turbulent Fşows, John Wiley and Sons, 2006.

3-    Leschziner, Michael, Statistical turbulence modelling for fluid dynamics, demystified : an introductory text for graduate engineering students, 2015.

4-    Durbin, P.A.,Pettersson Reif, B.A., Statistical Theory and Modeling

for Turbulent Flows, Second Edition, John Wiley  Sons, 2011.

5-    Kuo, K.K., Acharya, R., Fundamentals of Turbulent and Multiphase Combustion, John Wiley and Sons, 2012.

6-    Davidson, P.A., Turbulence An Introduction for Scientists and Engineers, University of Cambridge, 2015.

 

Also, some additional lecture notes will be distributed or uploaded on the class web page regarding to machine learning algorithms  in turbulence models.

Assessment Criteria:

	Quantity	Percentage
Midterm Exam (November 06, 2025)	1	20
Homeworks	5	15
Term Paper	1	25
Final Exam	1	40

Term paper will include the computational investigation of a turbulent flow  using OPEN SOURCE Codes and including the comparison of the turbulence models. It should be written in journal paper format and to be delivered on the last class of the semester.

FOR THE FINAL EXAM

-70% ATTENDANCE

-MINIMUM 50 POINTS AVARAGE FOR THE MIDTERM STUDIES

COURSE SCHEDULE

Week	Title	Chapter of the textbook
1 Sep. 25	Overview Introduction to the Course	Introduction Slide (Mostly from Schiestel)
2 Oct. 2	Introduction to Turbulence, Turbulent Scales, Energy Spectrum, The Cascade Process	Davidson, Ch. 5
3 Oct. 9	Turbulent Mean Flow, Probability Density Functions, Transport Equations for Turbulent Kinetic Energy, Transport Equations or Reynolds Stresses, Correlations	Davidson, Chs.: 6,7,8,9,10
4 Oct. 16	Reynolds Stress Models and Two Equation Models Eddy Viscosity Models	Davidson, Ch. 11, 12
5 Oct. 23	Scalar/Heat-Flux-Transport Modelling	Leschziner, Ch.13
6 Oct. 30	Turbulent Buoyant Flows	Durbin and Pettersson-Reif, Ch. 8
7 Nov. 06	Free Shear Flows MIDTERM (1.5 hours)	Durbin and Pettersson-Reif, Ch. 4
8 Nov. 20	Overview of Turbulent Combustion in RANS	Kuo and Acharya, Ch. 4
9 Nov. 27	Introduction to LES	Davidson, Ch. 18
10 Dec. 04	Test Filter, Bardina Model, numerical Methods	Davidson, Ch. 18
11 Dec. 11	Discussion of Dissipation in LES and RANS	Davidson, Ch. 18
12 Dec. 18	URANS, DES and Hybrid LES-RANS and Review	Davidson, Chs. 19-28
13 Dec. 25	Modeling of Buoyant Flows in LES	Journal papers
14 Jan. 01 (Make up lecture will be discussed)	Discussing Turbulent Combustion in LES	Kuo and Acharya, Ch. 4
Optional lecture (Either online or face to face)	Machine Learning Algorithms in Turbulence Modeling	Journal papers