Pressure and velocity in a developing coaxial jet

Moon, L. F.

doi:10.2514/3.7051

Cited by 5 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Champagne and Wyganski 4 showed that neglecting the total and static pressure had an effect on large errors in the velocity fields. In an effort to study the velocity distributions in the near field of the coaxial jets, Moon 5 investigated static pressure, mean velocity, and turbulent intensity in the developing region of nonreactive coaxial jets. He concluded that the effects of pressure gradients could significantly influence the mixing and combustion process and that the turbulence mixing models did not appear to be adequate to predict the flow in the developing region of the coaxial jet.…”

Section: Introductionmentioning

confidence: 99%

Atomization and Combustion Characteristics of Ethanol/Nitrous Oxide at Various Momentum Flux Ratios

2014

View full text Add to dashboard Cite

The flame structure of ethanol and nitrous oxide combustion was experimentally studied using a tricoaxial injector at various momentum flux ratios. The objects of the study were to investigate the effects of the additional supplement of nitrous oxide that gas jets inject at the outer annular gap at various injection velocities and to obtain and analyze the flame structure. The fully developed patterns due to the transfer of momentum and viscosity mixing were similar to that of the axial flow when the measurement position was increased from Z/d = 1 to Z/d = 10. The correlation equation, using the momentum flux ratio, was used along with the linear regression method to calculate the breakup length and Sauter mean diameter (SMD). The effects were clearly observed and significant. The inner gas injection caused the SMD to decrease, and the outer gas injection was able to create a boundary layer around the spray jets. As the momentum flux ratio of the inner gas jets increased, the spray angle and flame angle increased. OH radicals extended toward the rear flame region with the increase in momentum flux ratio from the inner gas jets. As the momentum flux of the outer gas jets increased, the boundary of the OH radicals developed and the intensity of the OH radicals generated in the flame region was enhanced. Also, the flame temperature increased as gas was injected from the outer-stage.

show abstract

Section: Introductionmentioning

confidence: 99%

Atomization and Combustion Characteristics of Ethanol/Nitrous Oxide at Various Momentum Flux Ratios

2014

View full text Add to dashboard Cite

show abstract

“…is the velocity a t which the gas and liquid are injected. From th e literature it was strongly shown th a t the ratio of the gas velocity to the liquid velocity plays a signif icant role in governing the atom ization of the liquid [17], [23], [38], [33] . This is due to the m om entum transfer causing the shearing action between the liquid and gas.…”

Section: Injector In Itia L Sizingmentioning

confidence: 99%

Investigation of injector system and gas generator propellant for aft-injected hybrid propulsion

Pilon¹

View full text Add to dashboard Cite

In vestigation o f Injector S y stem and G as G enerator P rop ellan t For A ft-In jected H ybrid P ro p u lsio nby B r y a n P ilo n , B . E n g . A thesis subm itted to the Faculty of G raduate Studies and Research in partial fulfillment of the requirements for the degree of M a s t e r o f A p p lie d S c ie n c e O ttaw a-C arleton In stitu te for Mechanical and Aerospace Engineering D epartm ent of Mechanical and Aerospace Engineering C arleton U n iv ersity O ttaw a, Ontario, Canada

show abstract

Mixing Process of Arced Gas With Cold Gas in the Cylinder of Gas Circuit Breaker

Sasao

Hamano

Oomori

et al. 1982

IEEE Trans. on Power Apparatus and Syst.

View full text Add to dashboard Cite

Pressure and velocity in a developing coaxial jet

Cited by 5 publications

References 8 publications

Atomization and Combustion Characteristics of Ethanol/Nitrous Oxide at Various Momentum Flux Ratios

Atomization and Combustion Characteristics of Ethanol/Nitrous Oxide at Various Momentum Flux Ratios

Investigation of injector system and gas generator propellant for aft-injected hybrid propulsion

Mixing Process of Arced Gas With Cold Gas in the Cylinder of Gas Circuit Breaker

Contact Info

Product

Resources

About