Freitag and Klein in 2005 to reflux swirl flow field simulation using DNS, and the calculated results with laser Doppler (LDV) test results and LES calculation results are compared to the DNS in a complex swirl calculation basis. MatsuZaki numerical methods such as the method used LEs clip inside the nozzle rotating rectangular channel flow rotating flow characteristics were studied , consistent with the experimental results obtained quantitative measurements. Mcllwain and Pouard application LES simulated rotating flow field near the jet . Ng from Eritrea and other limited rotation under different turbulent swirling flow made ??large eddy simulation indicates turbulent flow along the fast decay and turbulence structure greatly depends on the initial spin strong. At higher rotation , spiral flow in the region near a sudden expansion of a large burst of the bubble formed in the recirculation zone , the center of this large -scale vortices off the center axis , resulting in cutting speed and the diameter of the shaft speed is nonzero . wegner etc. and Stein and Kemp were used LES response to the presence within the swirl burner flow simulation , and rotation of the vortex breakdown phenomenon is very sensitive to do the research . All these studies indicate that LES and DNS can well simulate the rotation of the main characteristics of the stream , but their cost is very expensive computing and LES in predicting the occurrence of vortex breakdown , blunt end of the body and the center jet and the impact traces

Rotation difficult to interact with the presence of flow between areas . Nozzle Despite great progress has been made in turbulence modeling , however, the simulation of turbulent swirling standard KEM its modified form is still commonly used model. Brewster has pointed out , such as KEM enough to predict many engineering problems swirling phenomenon . Jochmann and others with RSM and ke turbulence model for the gas turbine combustion chamber spiral fracture dynamics to predict , noted that although KEM overestimate the amount of turbulence , but it can accurately predict the height of the cyclone unsteady flow state, and the two kinds of turbulence models to predict the results of comparison show that the unsteady flow structure on the exact value is not sensitive to the amount of turbulence , and therefore , the impact of fluid turbulence caused by the internal mechanism of vortex breakdown is not large . Nagendra studies have shown that to achieve k-. Turbulence model (Reallzablek-: medel) can be a good predictor of rotating jet reflux average speed . Sprinklers and compared to the standard ks turbulence model can achieve k-. Strong turbulence models for flow line bending , vortex flow and reflow phenomenon has been demonstrated superiority. Based on these , the research paper, the ks turbulence model can be achieved using swirl jet spinning nozzle to be within the simulation.

Freitag and Klein in 2005 to reflux swirl flow field simulation using DNS, and the calculated results with laser Doppler (LDV) test results and LES calculation results are compared to the DNS in a complex swirl calculation basis. MatsuZaki numerical methods such as the method used LEs clip inside the nozzle rotating rectangular channel flow rotating flow characteristics were studied , consistent with the experimental results obtained quantitative measurements. Mcllwain and Pouard application LES simulated rotating flow field near the jet . Ng from Eritrea and other limited rotation under different turbulent swirling flow made ??large eddy simulation indicates turbulent flow along the fast decay and turbulence structure greatly depends on the initial spin strong. At higher rotation , spiral flow in the region near a sudden expansion of a large burst of the bubble formed in the recirculation zone , the center of this large -scale vortices off the center axis , resulting in cutting speed and the diameter of the shaft speed is nonzero . wegner etc. and Stein and Kemp were used LES response to the presence within the swirl burner flow simulation , and rotation of the vortex breakdown phenomenon is very sensitive to do the research . All these studies indicate that LES and DNS can well simulate the rotation of the main characteristics of the stream , but their cost is very expensive computing and LES in predicting the occurrence of vortex breakdown , blunt end of the body and the center jet and the impact traces

Rotation difficult to interact with the presence of flow between areas . Nozzle Despite great progress has been made in turbulence modeling , however, the simulation of turbulent swirling standard KEM its modified form is still commonly used model. Brewster has pointed out , such as KEM enough to predict many engineering problems swirling phenomenon . Jochmann and others with RSM and ke turbulence model for the gas turbine combustion chamber spiral fracture dynamics to predict , noted that although KEM overestimate the amount of turbulence , but it can accurately predict the height of the cyclone unsteady flow state, and the two kinds of turbulence models to predict the results of comparison show that the unsteady flow structure on the exact value is not sensitive to the amount of turbulence , and therefore , the impact of fluid turbulence caused by the internal mechanism of vortex breakdown is not large . Nagendra studies have shown that to achieve k-. Turbulence model (Reallzablek-: medel) can be a good predictor of rotating jet reflux average speed . Sprinklers and compared to the standard ks turbulence model can achieve k-. Strong turbulence models for flow line bending , vortex flow and reflow phenomenon has been demonstrated superiority. Based on these , the research paper, the ks turbulence model can be achieved using swirl jet spinning nozzle to be within the simulation.