|
Prof. Dr. Eng. Habil. MIHAI–AURELIU LUNGU University of Craiova, Faculty of Electrical Engineering, Electric, Energetic and Aerospatiale Engineering Department Aerospace Engineering Doctoral School of NUST Politehnica Bucharest |
 |
Mihai Lungu
Grant type: Experimentally demostrative project
Coordinator institute: University of Craiova
Financial sources: Executive Agency for Higher Education, Research, Development and Innovation Funding (UEFISCDI)
Grant duration: 18 months
Grant value: 600.000 lei (133.333 Euro)
PROJECT NO. PED 37/2017
DEMONSTRATOR FOR DIRECT COANDA EFFECT AMPLIFICATION
Abstract of the project:
The aim of the project is to experimentally demonstrate the amplification of the Coanda effect by creating a depression (low-pressure) area at leading edge of the Coanda flap, area which communicates with another artificially created upstream area, positioned also on the flap. This method may be called “direct amplification”, unlike others, that require intervention from outside (through application of energy or fluid mass). The project can be also considered a continuation of the researches achieved within the grant “Research on amplifying the Coanda effect” and, in the same time, an embodiment of the possibility of amplifying the Coanda effect by creating a demonstrator. There will be demonstrations from various deflection angles of the flap, trying to return the jet at an angle of (up to) 180 degrees at various flow velocities, measuring the main parameters on extrados of the Coanda flap. This will be done to highlight the multiple possibilities of application in practice in the field of aerospace, chemical industry, or, in general, where a mixture of fluids must be better achieved.
Objectives of the project:
Main objective:
The increase of young researchers’ number and of their professional performances, as well as the knowledge development by means of experimentally research.
General objectives:
The usage of general knowledge in basic research for moving to a higher TRL and increasing the capacity of research organizations to generate solutions validated through laboratory products/technologies and new or significantly improved services and to provide these to economic environment.
Specific objectives:
1) Theoretical studies regarding air flow on Coanda flap having depression slots for different angles of flap’s deflection.
2) Manufacturing of the demonstrator with direct amplification Coanda effect allowing the return of the airflow at 180 degrees.
3) Validation of the demonstrator through experimental lab tests.
4) Dissemination of the results.
Team of the project:
1. Preotu Octavian – Project Manager (Researcher, Assoc. Prof. - University of Craiova)
2. Dumitrache Alexandru – Researcher (CS II - ISMMA Bucharest)
3. Frunzulica Florin – Researcher (Assoc. Prof. - UPB Bucharest)
4. Lungu Mihai-Aureliu – Researcher (Assoc. Prof. - University of Craiova)
5. Sirbu Ioana Gabriela – Postdoctoral Researcher (Lecturer - University of Craiova)
6. Duta Marinel – Researcher (Engineer - “Electrical Mechanical Wirings” S.R.L)
Work plan of the project:
I. Theoretical studies regarding air flow on Coanda flap having depression slots for different angles of flap’s deflection (12 months / 2017)
I.1. Theoretical studies regarding the flow on Coanda flap having depression slots in the space limited by the jet targeting plates.
I.2. Theoretical studies regarding the energy from the fluid jet turned at 180 degrees.
I.3. Design of the demonstrator under the conditions imposed by the project’s scope.
I.4. Manufacturing of the Coanda flap having depression slots and its testing in the wind tunnel.
I.5. Sizing and manufacturing of the demonstrator’s assemblies and sub-assemblies.
I.6. Dissemination of results.
II. Manufacturing and experimentally validation of the demonstrator with direct Coanda effect amplification (6 months / 2018)
II.1. Manufacturing of the demonstrator’s general ensemble.
II.2. Measurements of air flow parameters (speed, pressure, temperature, density) for different angles of flap’s deflection and flow speeds.
II.3. Comparative analysis between the theoretical and experimental results. Interpretation of results.
II.4. Dissemination of results.
Expected results:
Stage I (2017 - 12 months):
- Numerical simulations;
- Publishing of 3 database papers;
- Research report;
- Web page of the project.
Stage II (2018 - 6 months):
- Demonstrator;
- Patenting;
- Publishing of 2 database papers;
- Research report.
Results (videos):
Results (published papers):
1. Alexandru Dumitrache, Florin Frunzulica, Octavian Preotu, Tudor Ionescu. Thrust and Jet Directional Control Using the Coanda Effect. The 37th “Caius Iacob” Conference on Fluid Mechanics and its Technical Applications, 16 – 17 November, 2017, Bucharest, Romania.
2. Florin Frunzulica, Alexandru Dumitrache, Octavian Preotu. A method for the control of the Coanda effect. International Conference on Mathematics Computers in Sciences and Industry, Corfu Island, Greece, August 23-27, 2017.
3. Alexandru Dumitrache, Florin Frunzulica, Octavian Preotu. Flow analysis in various ejectors configurations. International Conference on Mathematics Computers in Sciences and Industry, Corfu Island, Greece, August 23-27, 2017.
4. Florin Frunzulica, Alexandru Dumitrache, Octavian Preotu. Numerical Investigations on the Coanda Effect Amplifications. World Academy of Science, Engineering and Technology, May 18-19 2017, Paris, France.
5. Alexandru Dumitrache, Florin Frunzulica, Octavian Preotu. Numerical Analysis of the Coanda Effect on the Classical Interior Ejectors. World Academy of Science, Engineering and Technology, May 18-19 2017, Paris, France.
6. Alexandru Dumitrache, Florin Frunzulica, Octavian Preotu. Mathematical and numerical analysis of the Coanda effect. American Romanian Academy of Arts and Sciences, 18-22 iulie 2017, Craiova, Romania.
7. Florin Frunzulica, Alexandru Dumitrache, Daniel Cruteanu. Directional Control of a Jet Using the Coanda effect. 15th International Conference of Numerical Analysis and Applied Mathematics, 25-30 September, 2017, Thessaloniki, Greece.
8. Florin Frunzulica, Alexandru Dumitrache, Octavian Preotu. Directional A passive flow control method based on the Coanda Effect. 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) 2018, July 101-13, Budapest, Hungary (Accpeted paper).
9. Florin Frunzulica, Alexandru Dumitrache, Octavian Preotu. Applications of the Coanda Effect in Aeronautics. 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) 2018, July 101-13, Budapest, Hungary (Accepted paper).
10. Alexandru Dumitrache, Florin Frunzulica, Tudor Ionescu. Coanda effect on the flows through ejectors and channels. 20th International Conference AFASES 2018 (Accepted paper).
Results (patents):
Preotu, O., Dumitrache, A., Frunzulica, F., Lungu, M., Sirbu, I., Duta, M. Instalatie pentru demonstrarea amplificarii directe a efectului Coanda. Cerere de brevet nr. A/00305 din data: 3.05.2018.
Contact:
Project Manager: Assoc. Prof. Octavian Preotu
e-mail: opreotu@yahoo.com
University of Craiova
Facultaty of Electrical Engineering
Decebal B-dul, no. 107, Zip code: 200440, Craiova, Dolj, Romania