Journal ArticleDOI
Commercial turbofan engine exhaust nozzle flow analyses
Reads0
Chats0
TLDR
In this paper, a three-dimensional code is developed for solving the simplified Reynolds-averaged NavierStokes equations in a 3D multiblock/mul tizone structured mesh domain.Abstract:
The recently developed three-dimensional code is able to perform a computational investigation of complex aircraft aerodynamic components. This code was developed for solving the simplified Reynolds-averaged NavierStokes equations in a three-dimensional multiblock/mul tizone structured mesh domain. The present analysis was applied to commercial turbofan exhaust flow systems. Solution sensitivity to grid density is presented. Laminar flow solutions were developed for all grids, and two-equation k-£ solutions were developed for selected grids. Static pressure distributions, mass flow, and thrust quantities were calculated for on-design engine operating conditions. Good agreement between predicted surface static pressures and experimental data was observed at different locations. Mass flow was predicted within 0.2% of experimental data. Thrust forces were typically within 0.6% of experimental data.read more
Citations
More filters
Application of Navier-Stokes Code PAB3D With k-c Turbulence Model to Attached and Separated Flows
TL;DR: The use of trademarks or names of manufacturers in this report is for accurate reporting and does not constitute an official endorsement of such products or manufacturers by the National Aeronautics andSpace Administration.
Journal ArticleDOI
Performance Prediction of Conical Nozzle Using Navier-Stokes Computation
TL;DR: In this paper, the authors describe the numerical investigation of convergent conical nozzles done in the AIAA Propulsion Aerodynamic Workshop number one Axisymmetric, three-dimensional, and unsteady computations were conducted for three main test cases.
Book
Pab3d: Its History in the Use of Turbulence Models in the Simulation of Jet and Nozzle Flows
Khaled S. Abdol-Hamid,S. Paul Pao,Craig A. Hunter,Karen A. Deere,Steven J. Massey,Alaa Elmiligui +5 more
TL;DR: In this article, the authors describe different turbulence models used in the simulation of subsonic and supersonic jet and nozzle flows, and compare their results with available experimental data.
Journal ArticleDOI
Aerodynamic Design of Separate-Jet Exhausts for Future Civil Aero-engines—Part I: Parametric Geometry Definition and Computational Fluid Dynamics Approach
Journal ArticleDOI
Drag prediction method of powered-on civil aircraft based on thrust drag bookkeeping
TL;DR: In this article, a drag prediction method based on thrust drag bookkeeping (TDB) is introduced for civil jet propulsion/airframe integration performance analysis, which is derived from the control volume theory of a powered-on nacelle.
References
More filters
Journal ArticleDOI
The calculation of low-Reynolds-number phenomena with a two-equation model of turbulence
W.P. Jones,Brian Launder +1 more
TL;DR: In this article, the authors present numerical predictions of various turbulent shear flows in which the structure of the viscous sublayer exerts appreciable influence on the flow, where the turbulence energy and its dissipation rate are calculated by way of transport equations which are solved simultaneously with the conservation equations for the mean flow.
Proceedings ArticleDOI
Implicit flux-split schemes for the Euler equations
Journal ArticleDOI
Implicit flux-split schemes for the Euler equations
TL;DR: In this article, the authors compare the relative efficiency of Gauss-Seidel relaxation and spatially split approximately factored methods on a vector processor for two-dimensional flows and transonic flows.
Journal ArticleDOI
Numerical Simulation of Multistream Nozzle Flows
K. M. Peery,C. K. Forester +1 more