Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 214
Book Description
Turbofan Forced Mixer Lobe Flow Modeling. 1: Experimental and Analytical Assessment
Turbofan Forced Mixer Lobe Flow Modeling. 1
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723467561
Category :
Languages : en
Pages : 160
Book Description
A joint analytical and experimental investigation of three-dimensional flowfield development within the lobe region of turbofan forced mixer nozzles is described. The objective was to develop a method for predicting the lobe exit flowfield. In the analytical approach, a linearized inviscid aerodynamical theory was used for representing the axial and secondary flows within the three-dimensional convoluted mixer lobes and three-dimensional boundary layer analysis was applied thereafter to account for viscous effects. The experimental phase of the program employed three planar mixer lobe models having different waveform shapes and lobe heights for which detailed measurements were made of the three-dimensional velocity field and total pressure field at the lobe exit plane. Velocity data was obtained using Laser Doppler Velocimetry (LDV) and total pressure probing and hot wire anemometry were employed to define exit plane total pressure and boundary layer development. Comparison of data and analysis was performed to assess analytical model prediction accuracy. As a result of this study a planar mixed geometry analysis was developed. A principal conclusion is that the global mixer lobe flowfield is inviscid and can be predicted from an inviscid analysis and Kutta condition. Barber, T. and Paterson, R. W. and Skebe, S. A. Unspecified Center COMPUTATIONAL FLUID DYNAMICS; FLOW DISTRIBUTION; MATHEMATICAL MODELS; MIXING LAYERS (FLUIDS); NOZZLE FLOW; THREE DIMENSIONAL FLOW; FLOW VISUALIZATION; LASER DOPPLER VELOCIMETERS; PRESSURE DISTRIBUTION; VELOCITY DISTRIBUTION...
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723467561
Category :
Languages : en
Pages : 160
Book Description
A joint analytical and experimental investigation of three-dimensional flowfield development within the lobe region of turbofan forced mixer nozzles is described. The objective was to develop a method for predicting the lobe exit flowfield. In the analytical approach, a linearized inviscid aerodynamical theory was used for representing the axial and secondary flows within the three-dimensional convoluted mixer lobes and three-dimensional boundary layer analysis was applied thereafter to account for viscous effects. The experimental phase of the program employed three planar mixer lobe models having different waveform shapes and lobe heights for which detailed measurements were made of the three-dimensional velocity field and total pressure field at the lobe exit plane. Velocity data was obtained using Laser Doppler Velocimetry (LDV) and total pressure probing and hot wire anemometry were employed to define exit plane total pressure and boundary layer development. Comparison of data and analysis was performed to assess analytical model prediction accuracy. As a result of this study a planar mixed geometry analysis was developed. A principal conclusion is that the global mixer lobe flowfield is inviscid and can be predicted from an inviscid analysis and Kutta condition. Barber, T. and Paterson, R. W. and Skebe, S. A. Unspecified Center COMPUTATIONAL FLUID DYNAMICS; FLOW DISTRIBUTION; MATHEMATICAL MODELS; MIXING LAYERS (FLUIDS); NOZZLE FLOW; THREE DIMENSIONAL FLOW; FLOW VISUALIZATION; LASER DOPPLER VELOCIMETERS; PRESSURE DISTRIBUTION; VELOCITY DISTRIBUTION...
Turbofan Forced Mixer Lobe Flow Modeling
Scientific and Technical Aerospace Reports
Turbofan Forced Mixer Lobe Flow Modeling. 2: Three-dimensional Inviscid Mixer Analysis (FLOMIX)
2nd AIAA/CEAS Aeroacoustics Conference
34th Aerospace Sciences Meeting & Exhibit
AIAA Journal
Author: American Institute of Aeronautics and Astronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1272
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1272
Book Description