Direct simulation monte carlo model of low reynolds number nozzle flows

Donna Zelesnik, Michael Matthew Micci, Lyle Norman Long

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Numerical analysis of low Reynolds number nozzle flows is performed to investigate the loss mechanisms involved and to determine the nozzle wall contour that minimizes these losses. The direct simulation Monte Carlo method is used to simulate nitrogen flows through conical, trumpet-shaped, and bell-shaped nozzles at inlet stagnation temperatures of 300 and 1000 K. The Reynolds number of the flows based on throat diameter range from 90 to 125. The trumpet-shaped nozzle has the highest efficiency with the unheated flow. With the heated flow both the trumpet and bell-shaped nozzles have a 6.5% higher efficiency than the conical nozzle. The conical nozzle has the highest discharge coefficient, which is unaffected by the change in stagnation temperature; however, the increase in stagnation temperature increases the heat-transfer and viscous losses in the boundary layer. These results suggest that the trumpet-shaped wall contour performs most efficiently except near the throat region, where it incurs large viscous losses. However, the bell-shaped nozzle may increase its overall performance with an increase in stagnation temperature.

Original languageEnglish (US)
Pages (from-to)546-553
Number of pages8
JournalJournal of Propulsion and Power
Volume10
Issue number4
DOIs
StatePublished - Jan 1 1994

Fingerprint

stagnation temperature
nozzle flow
low Reynolds number
Reynolds number
nozzles
Nozzles
conical nozzles
bells
throats
simulation
conical flow
nozzle walls
discharge coefficient
inlet temperature
temperature
numerical analysis
Monte Carlo method
boundary layers
heat transfer
nitrogen

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Space and Planetary Science

Cite this

@article{75b60bae2f704e97975b077c93225e34,
title = "Direct simulation monte carlo model of low reynolds number nozzle flows",
abstract = "Numerical analysis of low Reynolds number nozzle flows is performed to investigate the loss mechanisms involved and to determine the nozzle wall contour that minimizes these losses. The direct simulation Monte Carlo method is used to simulate nitrogen flows through conical, trumpet-shaped, and bell-shaped nozzles at inlet stagnation temperatures of 300 and 1000 K. The Reynolds number of the flows based on throat diameter range from 90 to 125. The trumpet-shaped nozzle has the highest efficiency with the unheated flow. With the heated flow both the trumpet and bell-shaped nozzles have a 6.5{\%} higher efficiency than the conical nozzle. The conical nozzle has the highest discharge coefficient, which is unaffected by the change in stagnation temperature; however, the increase in stagnation temperature increases the heat-transfer and viscous losses in the boundary layer. These results suggest that the trumpet-shaped wall contour performs most efficiently except near the throat region, where it incurs large viscous losses. However, the bell-shaped nozzle may increase its overall performance with an increase in stagnation temperature.",
author = "Donna Zelesnik and Micci, {Michael Matthew} and Long, {Lyle Norman}",
year = "1994",
month = "1",
day = "1",
doi = "10.2514/3.23807",
language = "English (US)",
volume = "10",
pages = "546--553",
journal = "Journal of Propulsion and Power",
issn = "0748-4658",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
number = "4",

}

Direct simulation monte carlo model of low reynolds number nozzle flows. / Zelesnik, Donna; Micci, Michael Matthew; Long, Lyle Norman.

In: Journal of Propulsion and Power, Vol. 10, No. 4, 01.01.1994, p. 546-553.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Direct simulation monte carlo model of low reynolds number nozzle flows

AU - Zelesnik, Donna

AU - Micci, Michael Matthew

AU - Long, Lyle Norman

PY - 1994/1/1

Y1 - 1994/1/1

N2 - Numerical analysis of low Reynolds number nozzle flows is performed to investigate the loss mechanisms involved and to determine the nozzle wall contour that minimizes these losses. The direct simulation Monte Carlo method is used to simulate nitrogen flows through conical, trumpet-shaped, and bell-shaped nozzles at inlet stagnation temperatures of 300 and 1000 K. The Reynolds number of the flows based on throat diameter range from 90 to 125. The trumpet-shaped nozzle has the highest efficiency with the unheated flow. With the heated flow both the trumpet and bell-shaped nozzles have a 6.5% higher efficiency than the conical nozzle. The conical nozzle has the highest discharge coefficient, which is unaffected by the change in stagnation temperature; however, the increase in stagnation temperature increases the heat-transfer and viscous losses in the boundary layer. These results suggest that the trumpet-shaped wall contour performs most efficiently except near the throat region, where it incurs large viscous losses. However, the bell-shaped nozzle may increase its overall performance with an increase in stagnation temperature.

AB - Numerical analysis of low Reynolds number nozzle flows is performed to investigate the loss mechanisms involved and to determine the nozzle wall contour that minimizes these losses. The direct simulation Monte Carlo method is used to simulate nitrogen flows through conical, trumpet-shaped, and bell-shaped nozzles at inlet stagnation temperatures of 300 and 1000 K. The Reynolds number of the flows based on throat diameter range from 90 to 125. The trumpet-shaped nozzle has the highest efficiency with the unheated flow. With the heated flow both the trumpet and bell-shaped nozzles have a 6.5% higher efficiency than the conical nozzle. The conical nozzle has the highest discharge coefficient, which is unaffected by the change in stagnation temperature; however, the increase in stagnation temperature increases the heat-transfer and viscous losses in the boundary layer. These results suggest that the trumpet-shaped wall contour performs most efficiently except near the throat region, where it incurs large viscous losses. However, the bell-shaped nozzle may increase its overall performance with an increase in stagnation temperature.

UR - http://www.scopus.com/inward/record.url?scp=0028464749&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028464749&partnerID=8YFLogxK

U2 - 10.2514/3.23807

DO - 10.2514/3.23807

M3 - Article

AN - SCOPUS:0028464749

VL - 10

SP - 546

EP - 553

JO - Journal of Propulsion and Power

JF - Journal of Propulsion and Power

SN - 0748-4658

IS - 4

ER -