Performance analysis of microthrusters based on coupled thermal-fluid modeling and simulation

A. A. Alexeenko; D. A. Levin; D. A. Fedosov; S. F. Gimelshein; R. J. Collins

doi:10.2514/1.5354

Performance analysis of microthrusters based on coupled thermal-fluid modeling and simulation

A. A. Alexeenko, D. A. Levin, D. A. Fedosov, S. F. Gimelshein, R. J. Collins

Research output: Contribution to journal › Article › peer-review

Abstract

Gas flow and performance characteristics of a high-temperature micro-electronically machined systems (MEMS)-based thruster are studied using a coupled thermal-fluid analysis. The material thermal response governed by the transient-heat-conduction equation is obtained by the finite element method. The low-Reynolds number gas flow in the microthruster is modeled by the direct simulation Monte Carlo approach. The effects of Reynolds number, thermal boundary conditions, and micronozzle height are considered in detail. The predicted thrust and mass-discharge coefficient of the three-dimensional microthruster under different flow conditions decrease with time as the viscous losses increase for higher wall temperatures.

Original language	English (US)
Pages (from-to)	95-101
Number of pages	7
Journal	Journal of Propulsion and Power
Volume	21
Issue number	1
DOIs	https://doi.org/10.2514/1.5354
State	Published - 2005
Externally published	Yes

ASJC Scopus subject areas

Aerospace Engineering
Fuel Technology
Mechanical Engineering
Space and Planetary Science

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abstract = "Gas flow and performance characteristics of a high-temperature micro-electronically machined systems (MEMS)-based thruster are studied using a coupled thermal-fluid analysis. The material thermal response governed by the transient-heat-conduction equation is obtained by the finite element method. The low-Reynolds number gas flow in the microthruster is modeled by the direct simulation Monte Carlo approach. The effects of Reynolds number, thermal boundary conditions, and micronozzle height are considered in detail. The predicted thrust and mass-discharge coefficient of the three-dimensional microthruster under different flow conditions decrease with time as the viscous losses increase for higher wall temperatures.",

author = "Alexeenko, {A. A.} and Levin, {D. A.} and Fedosov, {D. A.} and Gimelshein, {S. F.} and Collins, {R. J.}",

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AU - Collins, R. J.

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