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Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   FEBRUARY 2017 , Volume 16 , Number 11 ; Page(s) 123 To 134.
 
Paper: 

APPLYING A DSMC SOLVER TO EXPLORE THE EFFECTS OF HEATER PLATES/WALL HEATING IN MICROTHRUSTER

 
 
Author(s):  PARHIZKAR HAMIDREZA*, EBRAHIMI ASGHAR, LEKZIAN ELYAS
 
* AEROSPACE DEPARTMENT, MALEK ASHTAR UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN
 
Abstract: 

In the present paper, a DSMC solver is utilized to study the effects of wall heating/heater plates on performance parameters of microthruster systems. The solver uses local Knudsen number based on the gradient of flow properties to distinguish the molecular and continuum region. This solver uses theory of characterisitcs for determination of inlet and outlet boundary conditions. Proper cell dimensions, number of particles per cell, and grid study are carried out to guarantee the accuracy of simulations.
Three typical micropropulsion systems are studied. All three systems have a microchannel and a converging-diverging micronozzle. The first type is cold gas micropropulsion system, the second type is a microthruster with wall heated channel, the third type is microthruster with heater plates inside. The first type is considered as reference case and two other systems are compared with type1. It is observed that heating the walls in microthruster type2 accelerates the flow and increases the specific impulse of the system. In micropropulsion device type3, heater plates increase downstream temperature of convergent-divergent nozzle and also elevate the specific impulse. Due to considerable mass flow rate decrease of system type3, its thrust is decreased whereas mass flow rate of system type2 is not decreased as much as type3 and therefore the thrust of microthruster type2 is more than type1 and type3. Hence the second microprolusion system configuration has higher performance parameters in comparison with two other systems. It is also observed that increasing wall temperature in microthruster type2 decreases the thrust and specific impulse sensitivity to temperature increase.

 
Keyword(s): DSMC SOLVER, WALL HEATING AND HEATER PLATES, LOCAL KNUDSEN NUMBER, MICROTHRUSTER THRUST AND SPECIFIC IMPULSE, SENSITIVITY ANALYSIS
 
 
References: 
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Citations: 
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APA: Copy

PARHIZKAR, H., & EBRAHIMI, A., & LEKZIAN, E. (2017). APPLYING A DSMC SOLVER TO EXPLORE THE EFFECTS OF HEATER PLATES/WALL HEATING IN MICROTHRUSTER. MODARES MECHANICAL ENGINEERING, 16(11 ), 123-134. https://www.sid.ir/en/journal/ViewPaper.aspx?id=571655



Vancouver: Copy

PARHIZKAR HAMIDREZA, EBRAHIMI ASGHAR, LEKZIAN ELYAS. APPLYING A DSMC SOLVER TO EXPLORE THE EFFECTS OF HEATER PLATES/WALL HEATING IN MICROTHRUSTER. MODARES MECHANICAL ENGINEERING. 2017 [cited 2021August04];16(11 ):123-134. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=571655



IEEE: Copy

PARHIZKAR, H., EBRAHIMI, A., LEKZIAN, E., 2017. APPLYING A DSMC SOLVER TO EXPLORE THE EFFECTS OF HEATER PLATES/WALL HEATING IN MICROTHRUSTER. MODARES MECHANICAL ENGINEERING, [online] 16(11 ), pp.123-134. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=571655.



 
 
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