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Aerodynamic lab, which is one of the laboratories of faculty of new sciences and technologies of university of Tehran, is a place for analyzing the air flows, designing flying objects, designing and analyzing wind turbines and also testing experimental scale objects in wind tunnel. The laboratory itself is being divided into two parts, namely numerical aerodynamic lab and experimental aerodynamic lab which are being managed by Dr. Mojtaba Tahani and Dr. Mehran Masdari respectively. Aerospace students whose thesis is in the field of analyzing flow characteristics or testing experimental scale objects in wind tunnel can utilize from existing equipment.

Numerical Aerodynamic Lab

In numerical aerodynamic lab, students who are interested in applying numerical methods and softwares, such as ANSYS-Fluent, ANSYS-CFX, OpenFoam in their design and analysis procedure or they are interested in developing computer codes using MATLAB or other languages, can utilize from existing systems. Computational Fluid Dynamics (CFD) has being utilized in several engineering and also science fields which are related to fluid mechanics and aerospace. Some of the topics which are investigated in this lab are listed below:

·         Investigating the aerodynamic behavior of wind turbine.

·         Numerical investigation of the longitudinal damping coefficient of the three dimensional airfoil.

·         Investigating the influence of vibration frequency and amplitude on the characteristics of a vibrating airfoil in a supersonic regime.

·         Modeling and optimization of a vertical axis wind turbine with discharge capability.

·         Multi objective optimization and numerical simulation of a horizontal axis tidal current turbine.

·         Investigating surge in a compressor of a wet compression gas cycle.

·         And etc.

 

Experimental Aerodynamic Lab

This laboratory is formed according to the emergent need of students and also professors of the university of Tehran for the purpose of doing some experimental tests and also understanding the theoretical concepts. This laboratory has gained several positive results, beside increasing the knowledge of students and professors of the university, namely conducting tests on UAVs and etc. which are being designed in the faculty.

In this laboratory, it was tried to cover the high costs of precise aerodynamic tests and also necessity for expensive equipment, by interaction between existing labs in industry and also high rank universities in and outside of Iran. Also for the purpose of decreasing the number of tests, new methods such as DOE has been applied and therefore the number and also the time of tests has been decreased and better results have been achieved.

The laboratory has two types of wind tunnels, namely subsonic and supersonic, and it is the only industrial and semi industrial wind tunnel in the university of Tehran and it is among the few existing tunnels in Iran which have appropriate structure and equipment. Also, the laboratory has the ability to cover the goals of all existing fields in faculty of new sciences and technologies, such as testing the pollution caused by dust, identification tests, and analysis of biological organisms and etc. The specifications of tunnels are:

 

·         Specifications of the subsonic wind tunnel are as follow: open circuit, suction type, test section with 1.5*1*0.7 cubic meters, maximum velocity 55m/s and circuit length 12m.

·         Specifications of the supersonic wind tunnel are as follow: open circuit, blow type, test section with 2.5*3.5*10 cubic centimeters, maximum velocity 3.2 times of sound velocity.

Facilities such as hot-wire velocity meter, two-dimensional traverse system, high accuracy pressure sensors and etc. provide the required condition for conducting different static and dynamic tests such as pitching and planging, flow detection test and etc. All aerodynamic tests can be conducted using these two tunnels for a range of velocity between 2 to 350 km/h.

Research projects which are being conducted in this laboratory are as follow:

·         Experimental investigation of unsteady aerodynamic for combined pitching and planging variation on 2D and 3D models.

·         Design and performance test of supersonic aerospike nozzle using thrust vector control.

·         Investigating the aerodynamic behavior of wind turbine blade section

·         Investigating and analyzing the flow control on airfoil using boundary layer suction

·         Experimental investigation of turbulence influences on the aerodynamic behavior of wind turbine blade.

·         And etc.