Film Cooling Jet Cross Flow Simulation -Compressible Turbulent

   Film Cooling Applications

Film Cooling jet in a Cross Flow Simulation	Film cooling, Trajectory of Turbulent Jet Cross Flow	Film cooling, Multi-layer turbulent shear flow in jet to cross flow	Film cooling, Performance of our new film cooling method

Film Cooling

                        Born 1975, in a farmer family

             Malayer - Iran

Ph. D. Student:                                 Aerospace Engineering

                                                           Sharif University of Technology

                                                           Azadi Avenue, P.O. Box 11365

                                                          Tehran-Iran 

                                                           Phone:  (98) 21 6022731

                                                           Fax:      (98) 21 602 2720

                                                           Email: 1- khjavadi@mehr.sharif.edu

                                                                      2- javadi@aero.sharif.edu

                                                                       http://mehr.sharif.ir/~khjavadi

Aerospace Institute (Ministry of Science and Technology) Researcher

                                                                       3- javadi_kh@ari.ac.ir

Degrees

Ph. D. Student        Aerospace Engineering  – Aerodynamics          Sharif University of Technology (SUT)

M. S.                     Mechanical Engineering – Energy Conversion   Tabriz University

 B. S.                     Mechanical Engineering – Thermo-Fluid           Tabriz University

Research Interested

• Heat/mass Transfer and Fluid Flow Simulation
• Turbulence (New Idea in the Physics of Turbulence and Modeling)
• Two Phase Flow
• New Idea in Computational Fluid Dynamics  
• Experimental/Computational  Thermo-aero-hydrodynamics
• Reversible and Clean New Energies
• Aerodynamics
• Aerodynamics Heating

Recent Activities

• Computational Fluid Dynamics ( Development Methodology and Application)
• Investigation and Simulation of compressible/incompressible Turbulent Fluid Flow
• Heat Transfer Simulation and Prediction
• Gas turbine Cooling (Film cooling)

Visited Courses and Workshop

• Turbulence Modeling ( Prof. G. Ahmadi – Clarkson University 2002)
• Advanced Turbulence ( Prof. G. Ahamadi- Clarkson University 2004)
• Parallel Computing ( Programming and Processing, Dr. Ashrafizadeh 2002)

Ph. D. Research Program

"Compressible Film Cooling"

“Computational Simulation of Multiple Jets into a Cross Flow -Compressible Turbulent

   Film Cooling Applications”  (more Detail)

in this work we developed a new pressure –SIMPLE- based method, in order to calculate compressible/incompressible turbulent fluid flow. Compressible turbulent jet into cross flow with film cooling on gas turbine blade application using high level Reynolds stress turbulence model (RSM) is another majore goal of this program. in this research we have succeed to  developed a new approach to achieve a high film cooling effectiveness and uniformity by controling of  wake zone regions behind the coolant jet and reducing of mixing strength, between the two hot (main stream) and cold streams (coolant jets), using combined jets. The results show a drastic improvement in film cooling effectiveness (more than 50%) and uniformity temperature distibution on the gas turbine blades. In computational methodology a F.V.M with non-uniform, strucre/staggerd grid, SIMPLE iterative proucedure with new convection-diffusion terms linearization method has been used.

M. S.  Thesis Research Subject

“Computational and Experimental Investigation of  Impingment of a Turbulent Jet on the Tow Parellel Circular Cylinder, Using low Reynolds k-εTurbulence Model”

in this work we simulated  impingment of a tow dimensional turbulent jet on the tow-parallel circular  cylinder using low Reynolds k-ε turbulence model . the distance beween the cylinders was variable. finding the optimom distance between the tow cilynders from shear wall-stress point of view was the most important  aim  of this work (applicable  in cleaning of  heat exchanger tubs with usage of turbulent  jet flow (water or air)). Also, investigation on the problem done experimentally in mechanical engineering department labratory at tabriz university. And at least the computaiona and experimental result were compared.

B. S.  Research Subject

“calculation - design and selection parts of ventilationg of a small town appartments –heating (fancoil system)”

in this work we  analysed the heating load for the appartmens of the Sshahrak-Farhangian area in Ourmieh city (Iran) under the worse condition (the warmest mounth).

Academic Experience

• Aerospace Institute Researcher (Ministry Of Science And Technology)
• Head of The Second International & The Fifth National Conference Exhibition of Iranian Aerospace Society, Organized by: Aerospace Research Institute & Iran Aircraft Manufacturing Industry (2004)
• Teaching Assistant at Sharif University
• Teaching Assistant at Tabriz University
• Member of the Fifth Annual Conference of Iranian Society of Mechanical Engineers , Tabriz ,Iran , 1997
• Member of The 1st International & The 3rd Bi-Annual Conference of Iranian Aerospace Society, Organized by: Sharif university of Technology (2000)

Indusrial Experience

• Technical management of Establishment and running of scouring, disinfection, dryer and  lines, Collaborating with English and Belgium supervisors in Kerman Kork Company (a Cashmere export company in world) –(1998-1999)
• Technical Manager of factory of kork-Baft in Kerman Kork company, (1999-2000)
• Production manager Assistant, Quality Control Manager, (2000-2001)
• Research and Development Member in Kerman Kork Company (2001- 2002)
• Optimization of scouring, disinfection line in Kork-Baft Factory (2000-2001)
• Design, Patent and Manufacturing a fast humidity measurement for fibers using an equilibrium system (2000-2001)

Papers

1. Javadi A., Javadi K., Taeibi-Rahni M. and Keimasi M., 2002, “Reynolds stress turbulence models for prediction of shear stress terms in cross flow film cooling – numerical simulation”, 4^th International ASME/JSME/KSME Symposium on   computational technology CFD) for fluid/thermal/chemical/stress systems and industrial application, Vancouver, CANADA. 2002,  
2. Darbandi, M., Schneider, G.E., Javadi, K., and Solhpour, N., ``The Performance of a Physical Influence Scheme in Triangular Grids,” AIAA Paper 2003-0436, the 41^st AIAA Aerospace Sciences Meeting and Exhibit, Reno, ND, Jan. 6-9, 2003.
3. Javadi A., Javadi, K., Taeibi-Rahni, M. and Darbandi, M., 2003, “A New Approach to Improve Film Cooling Effectiveness Using Combined Jets”, IGTC2003Tokyo, International Gas Turbine Congress, Tokyo, 2003.
4. Darbandi, M., Taeibi-Rahni, M., Javadi, K., Javadi, A., and Schneider, G.E., ``Numerical Prediction on the Interaction of a Jet and a Turbulent Boundary Layer,” AIAA Paper 2003-3730, the 33^rd AIAA Fluid Dynamics Conference, Orlando, Florida, 11 pages, June 23-26, 2003
5. Javadi A, Javadi, K., Taeibi-Rahni, M. Darbandi, M. “Simulation Of Film Cooling Using Reynolds Stress Turbulence Model” The 2^nd International (5^th Annual) Conference of IAS, Isfahan, Iran, pp.407-416, Feb. 16-18, 2004. (in Persian)
6. Javadi, K., Darbandi, M., and Taeibi-Rahni, M., A., ``A New Approach to Solve Turbulent Flow with Variable Density,'' The 2^nd International (5^th Annual) Conference of IAS, Isfahan, Iran, pp.407-416, Feb. 16-18, 2004. (in Persian)