- Tytuł:
- Study on the effects of preheated wall/plates in microthruster systems
- Autorzy:
-
Lekzian, E.
Parhizkar, H.
Ebrahimi, A. - Powiązania:
- https://bibliotekanauki.pl/articles/280718.pdf
- Data publikacji:
- 2018
- Wydawca:
- Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
- Tematy:
-
DSMC/NS solver
pre-heated walls/plates
microthruster
performance parameters
temperature gradient - Opis:
- In the present paper, effects of pre-heated walls/plates on microthrusters performance are studied using a DSMC/NS solver. Three microthruster configuration types are studied. Type 1 is a cold gas microthrster. Microthruster type 2 has pre-heated walls. Pre-heated plates are inserted inside the chamber of microthruster type 3. It is observed that in microthruster type 2 the flow is accelerated and the specific impulse is elevated. However, by insertion of the pre-heated plates in microthruster type 3, viscous effects have stronger negative influence and the thrust is decreased. By implementing temperature gradients on walls in type 2 and on plates in type 3, it is observed that a higher temperature gradient enhances performance parameters of microthruters. Among all types of microthrusters, microthruster type 2 with pre-heated walls has the highest thrust and specific impulse. Microthruster type 3 with a temperature gradient of 300-500K has the minimum thrust due to a considerable decrease in the mass flow rate.
- Źródło:
-
Journal of Theoretical and Applied Mechanics; 2018, 56, 3; 713-725
1429-2955 - Pojawia się w:
- Journal of Theoretical and Applied Mechanics
- Dostawca treści:
- Biblioteka Nauki
Artykuł