Numerical simulation of jet noise from different jet nozzle geometries

2005 ◽  
Vol 118 (3) ◽  
pp. 1873-1873
Author(s):  
Umesh Paliath ◽  
Philip J. Morris
Keyword(s):  
Numerical Simulation ◽  
Jet Noise ◽  
Jet Nozzle ◽  
Nozzle Geometries

scholarly journals Jet noise simulations for realistic jet nozzle geometries

2010 ◽  
Vol 6 ◽  
pp. 28-37 ◽  
Author(s):  
Philip J. Morris ◽  
Yongle Du ◽  
Kursat Kara
Keyword(s):  
Jet Noise ◽  
Jet Nozzle ◽  
Nozzle Geometries

scholarly journals Reprint of: Jet Noise Simulations for Realistic Jet Nozzle Geometries

2010 ◽  
Vol 1 ◽  
pp. 28-37
Author(s):  
Philip J. Morris ◽  
Yongle Du ◽  
Kursat Kara
Keyword(s):  
Jet Noise ◽  
Jet Nozzle ◽  
Nozzle Geometries

Numerical Simulation of Droplet Ejection Based on VOF Method

2014 ◽  
Vol 548-549 ◽  
pp. 1257-1264 ◽  
Author(s):  
Xiao Yong Suo
Keyword(s):  
Numerical Simulation ◽  
Surface Tension ◽  
Numerical Model ◽  
Physical Properties ◽  
Vof Method ◽  
Numerical Results ◽  
Droplet Ejection ◽  
Ejection Process ◽  
Ink Jet ◽  
Jet Nozzle

Taking ejection process of the ink droplets from ink-jet nozzle as the prototype, a similar numerical model of droplet ejection was established. The VOF method was applied to track the interface of droplet ejection process and it is shown that the numerical results simulated by the VOF method were accurate and reliable. Six kinds of liquid with different physical properties were chosen as the research object. The numerical results were analyzed and compared. Finally, the effect of the surface tension, viscosity and density on the droplet ejection process was discussed.

Nozzle Geometry Effect on Twin Jet Flow Characteristics

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Muthuram A ◽  
Thanigaiarasu S ◽  
Rakesh Divvela ◽  
Rathakrishnan Ethirajan
Keyword(s):  
Mach Number ◽  
Flow Characteristics ◽  
Nozzle Geometry ◽  
Ambient Atmosphere ◽  
Free Jets ◽  
Twin Jets ◽  
Equivalent Area ◽  
Nozzle Configuration ◽  
Jet Nozzle ◽  
Nozzle Geometries

AbstractEffect of nozzle geometries on the propagation of twin jet issuing from nozzles with circle-circle, circle-ellipse, circle-triangle, circle-square, circle-hexagon and circle-star geometrical combinations was investigated for Mach numbers 0.2, 0.4, 0.6 and 0.8. In all the cases, both jets in the twin jet had the same Mach number. All the twin jets of this study are free jets, discharged into stagnant ambient atmosphere. The result of the twin jets issuing from circle-circle nozzle is kept as the reference in this study. For all the twin jet nozzles, the inter nozzle spacing; the distance between the nozzle axes (S) was 20 mm and all the nozzles had an equivalent area of 78.5 mm2. Thus for all the cases of the present study, S/D ratio is 2. The results show that the mixing of the combined jet, after the merging point is strongly influenced by the combined effect of the nozzle geometry and jet Mach number. Among the six different twin jet nozzle configuration studied, circle-square combination is found to be the most superior mixing promoter.

Jet Noise Simulations for Complex Nozzle Geometries

2015 ◽  
Vol 14 (7) ◽  
pp. 947-975 ◽  
Author(s):  
Ravi Ramamurti ◽  
Andrew Corrigan ◽  
Junhui Liu ◽  
Kazhikathra Kailasanath ◽  
Brenda Henderson
Keyword(s):  
Jet Noise ◽  
Nozzle Geometries

scholarly journals Research on Simulation and Performance Optimization of Mach 4 Civil Aircraft Propulsion Concept

2019 ◽  
Vol 2019 ◽  
pp. 1-19
Author(s):  
Min Chen ◽  
Zihao Jia ◽  
Hailong Tang ◽  
Yi Xiao ◽  
Yonghang Yang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Prediction Model ◽  
Conceptual Design ◽  
Performance Optimization ◽  
Jet Noise ◽  
Aircraft Engine ◽  
Requirement Analysis ◽  
Task Requirement ◽  
Civil Aircraft ◽  
And Performance

Supersonic civil aircraft is of a promising area in the development of future civil transport, and aircraft propulsion system is one of the key issues which determine the success of the aircraft. To get a good conceptual design and performance investigation of the supersonic civil aircraft engine, in this article, a fast, versatile as well as trust-worthy numerical simulation platform was established to analyze the Mach 4 turbine-based combined cycle (TBCC) engine concept so as to be applied to the supersonic civil aircraft. First, a quick and accurate task requirement analysis module was newly established to analyze the mission requirement of the Mach 4 supersonic civil aircraft. Second, the TBCC engine performance simulation model was briefly presented and the number of engines on the supersonic civil aircraft was analyzed, considering single engine inoperative. Third, the Stone model and the DLR method were investigated to estimate the engine jet noise and the NOx emission of the Mach 4 supersonic civil aircraft. Finally, a multiobjective optimization tool made up of a response surface method and a genetic algorithm was developed to optimize the design parameters and the control law of the TBCC engine, in order to make the Mach 4 supersonic civil aircraft engine with better performance, lower noise, and lower emissions. The uniqueness of the developed analysis tool lies in that it affords a numerical simulation platform capable of investigating the task requirement analysis module of the supersonic civil aircraft, engine jet noise prediction model, and the NOx emission prediction model, as well as a multiobjective performance optimization tool, which is beneficial for the conceptual design and performance research of Mach 4 supersonic civil aircraft’s propulsion system.

scholarly journals Optimization of Abrasive Water Jet Nozzle Based on Numerical Simulation

2021 ◽  
Vol 1985 (1) ◽  
pp. 012014
Author(s):  
Jiangsheng Deng ◽  
Yuefeng Yuan ◽  
Deran Li ◽  
Hai Cheng ◽  
Cheng Dai ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Jet Nozzle
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