Search citation statements
Paper Sections
Citation Types
Year Published
Publication Types
Relationship
Authors
Journals
The criticality of 21 st century advantages in energy saving opportunities has led aerospace companies around the world to once again revisit the Open Fan -or more commonly Counter Rotating Open Rotor (CROR) -engine technology in the past several years. The phenomenal advancements in computational fluid dynamics (CFD) technology over the past decade led to an expanded role in the test planning of a 2010 joint Boeing/Rolls-Royce CROR wind tunnel test campaign at the RUAG Aviation LWTE (Low Speed Wind Tunnel Emmen) in Emmen, Switzerland. The success of the validation of the CFD results as a test planning tool, as well as comparing the computation results themselves against wind tunnel measurements, will be examined in this paper. A large number of propeller operating conditions were analyzed with the momentum source rotor model in a steady CFD model prior to the test, greatly assisting in the determination of the run matrix. The test results were then used to evaluate the limitation of the steady CFD method, and to further validate the state-of-art unsteady CFD methodology. The CFD off-body results also helped in the post-test understanding of the wind tunnel results. Improvements to the CFD modeling were in turn made as a result of analysis of the tunnel results. While CFD was used for both isolated and full model cases, this paper will present results using the CFD code OVERFLOW2.1 for the isolated CROR configuration alone. NomenclatureAlpha, α = angle of attack beta, β = side slip angle CFD = computational fluid dynamics CROR = counter rotating open rotor FX = X component of the force FY = Y component of the force FZ = Z component of the force GMP = geometry manipulation protocol MX = X component of the moment R fwd = radius of the front propeller RPM = revolution per minute RSB = rotary shaft balance UHB = ultra high bypass 1 Senior Engineer,
The criticality of 21 st century advantages in energy saving opportunities has led aerospace companies around the world to once again revisit the Open Fan -or more commonly Counter Rotating Open Rotor (CROR) -engine technology in the past several years. The phenomenal advancements in computational fluid dynamics (CFD) technology over the past decade led to an expanded role in the test planning of a 2010 joint Boeing/Rolls-Royce CROR wind tunnel test campaign at the RUAG Aviation LWTE (Low Speed Wind Tunnel Emmen) in Emmen, Switzerland. The success of the validation of the CFD results as a test planning tool, as well as comparing the computation results themselves against wind tunnel measurements, will be examined in this paper. A large number of propeller operating conditions were analyzed with the momentum source rotor model in a steady CFD model prior to the test, greatly assisting in the determination of the run matrix. The test results were then used to evaluate the limitation of the steady CFD method, and to further validate the state-of-art unsteady CFD methodology. The CFD off-body results also helped in the post-test understanding of the wind tunnel results. Improvements to the CFD modeling were in turn made as a result of analysis of the tunnel results. While CFD was used for both isolated and full model cases, this paper will present results using the CFD code OVERFLOW2.1 for the isolated CROR configuration alone. NomenclatureAlpha, α = angle of attack beta, β = side slip angle CFD = computational fluid dynamics CROR = counter rotating open rotor FX = X component of the force FY = Y component of the force FZ = Z component of the force GMP = geometry manipulation protocol MX = X component of the moment R fwd = radius of the front propeller RPM = revolution per minute RSB = rotary shaft balance UHB = ultra high bypass 1 Senior Engineer,
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.