국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Rotor Wake/Stator Interaction Noise Prediction Code Technical Documentation and User''s Manual
저자	Topol, David A.;; Mathews, Douglas C.
Keyword	AERODYNAMIC NOISE;; FLOW CHARACTERISTICS;; FREQUENCIES;; HARMONICS;; INTERACTIONAL AERODYNAMICS;; LEADING EDGES;; NASA PROGRAMS;; NOISE PREDICTION;; ROTOR AERODYNAMICS;; STATORS;; WAKES
URL	http://hdl.handle.net/2060/20110000525
보고서번호	NASA/CR-2010-216818
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	This report documents the improvements and enhancements made by Pratt & Whitney to two NASA programs which together will calculate noise from a rotor wake/stator interaction. The code is a combination of subroutines from two NASA programs with many new features added by Pratt & Whitney. To do a calculation V072 first uses a semi-empirical wake prediction to calculate the rotor wake characteristics at the stator leading edge. Results from the wake model are then automatically input into a rotor wake/stator interaction analytical noise prediction routine which calculates inlet aft sound power levels for the blade-passage-frequency tones and their harmonics, along with the complex radial mode amplitudes. The code allows for a noise calculation to be performed for a compressor rotor wake/stator interaction, a fan wake/FEGV interaction, or a fan wake/core stator interaction. This report is split into two parts, the first part discusses the technical documentation of the program as improved by Pratt & Whitney. The second part is a user''s manual which describes how input files are created and how the code is run.