COMPUTER SIMULATION USAGE FOR THERMODYNAMIC SIGNATURE ANALYZE OF THERMOMAGNETIC ENGINE

Transcription

1 COMPUTER SIMULATION USAGE FOR THERMODYNAMIC SIGNATURE ANALYZE OF THERMOMAGNETIC ENGINE 4 TH EUROPEAN CONFERENCE FOR AEROSPACE SCIENCES (EUCASS) Author: Gabrielyan David Affiliation: postgraduate student, Rocket engines, Moscow Aviation Institute (State University of Aerospace Technologies) 1

2 Further technical and technological development. Decreasing of hydrocarbon fuel amount. Essential worsening of the environment. 2 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

3 Using potential magnetic energy of permanent magnets Magnetic phase transitions occurring in some ferromagnetic materials Using low-potential thermal energy 3 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

4 Stator is a fixed unit that includes magnetic systems (MS) Rotor is a disk with ferromagnetic elements Heat exchange system 4 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

5 1 permanent magnets (PM); 2 ferromagnetic working substance; 3 interpolar gap (IPG). 5 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

6 6 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

7 Problems of magnetostatics, hydrodynamics, thermal physics, hydraulics, aerodynamics, etc. Much preliminary optimization work for each task Providing opportunities for experimental verification 7 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

8 The task of designing and creating a working draft TME seems to be rather laborious and it should be split into several parts. The present work puts forward the problem of designing magnetic system and its solving using computer simulation. 8 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

9 Is a complex software utility that allows solving universal problems Has the potential of free varying parameters Allows calculating the field distribution in 3D geometry 9 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

10 MS is an accumulator of magnetic energy and is an assembly of several permanent magnets. 10 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

11 Group of materials Н С, kа/m В r, Т (BH) max, kj/m 3 Nd-Fe-B ,2-1, Sm-Co ,0-1, Fe-Co-Ni-Al ,0-1, Fe-Cr-Co ,3-1, Ferrites ,3-0, David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

12 Chosen PMs have to provide the high values of magnetic induction in the working volume of the magnetic system Distribution of magnetic field has to obtain prolonged and continuous growth of the magnetic induction at the MS entrance and reduce action of magnetic force on the ferromagnetic working substance at the MS output 12 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

13 First test was made to check the correctness of method selected in ANSYS software for solution certain magnetostatic tasks. Second test was performed to determine the error of numerical calculations. 13 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

14 14 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

15 SUMMARY OF FORCES BY VIRTUAL WORK Force-X Force-Y Force-Z e-02 N e-02 N e-02 N 15 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

16 The choice of PM should be guided by three factors: Efficiency Cost Compactness 16 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

17 The MS used in the tests do not satisfy the necessary TME tasks because of the following reasons: In the distribution of magnetic induction the value jumps occurs. Distribution is not asymmetric. There is no prolonged gradient of magnetic induction from one side of the system that would allow involving greater magnetic mass. 17 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

18 Were considered: Different number of PMs in each MS Different sizes of MSs and PMs Shielding MSs by ferromagnetic material Shifting one PM relatively to another one. All results were compared with the simple system described before. 18 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

19 The system consists of three permanent magnets. Small magnets are unipolar to each other, coupling by side surfaces. Together they constitute 0.25 of the previous magnet mass. 19 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

20 Has satisfied gradient of magnetic field without any apparent jumps and derivations Has less mass of the system 20 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

21 21 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

22 B(x) dependence on distance in systems assembled from three PM with shield and with upper magnets shift 22 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

23 Problem of designing TME requires massive computations in the different fields of physics. Magnetostatic problems are solved. Preliminary MS recommendations and requirements were established. Using ANSYS software MS model was optimized. 23 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

24 4 TH EUROPEAN CONFERENCE FOR AEROSPACE SCIENCES (EUCASS) 24 David Gabrielyan. postgraduate student of Moscow Aviation Institute (State University of Aerospace Technologies)

25 25 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.

26 26 David Gabrielyan. Computer simulation usage for thermodynamic signature analyze of thermomagnetic engine.