Analysis of Radial Baffle Effects on Acoustic Characteristics of a Combustion Chamber

H. Mehrjou; Mohammad Farshchi

Volume 6, Issue 1 , March 2009, Pages 1-12

  An efficient finite volume approach has been used to develop a three dimensional Helmholtz acoustic solver for complex geometries. This acoustic solver was utilized to obtain characteristic mode shapes and frequencies of a baffled combustion chamber. An experimental setup, including stationary and moving ...  Read More


S. Forouzan-sepehr; Soheil Dr. Mohammadi

Volume 6, Issue 1 , March 2009, Pages 13-23

  The element-free Galerkin method is employed for two-dimensional analysis of steady-state heat transfer. The unknown response of the system, i.e. temperature is approximated using the moving least squares technique. Numerical integration of governing simultaneous system of equations is performed by Gauss ...  Read More

Impact of Body on the Tail Surface Flowfield at High Incidences

A. Davari; M. Hadi Dulabi; Mohammad Reza Dr. Soltani; F. asakari

Volume 6, Issue 1 , March 2009, Pages 25-35

  An experimental study was performed to investigate the effects of the body angle of attack on the tail surface pressure distribution for a half body-tail combination in subsonic flow. The results show, in small deflection angle regions, that the tail deflection has the same effect on the surface pressure ...  Read More

Gyroscope Random Drift Modeling, using Neural Networks, Fuzzy Neural and Traditional Time- series Methods

P. Heydari; H. Khaloozadeh; A.P. Heydari

Volume 6, Issue 1 , March 2009, Pages 35-44

  In this paper statistical and time series models are used for determining the random drift of a dynamically Tuned Gyroscope (DTG). This drift is compensated with optimal predictive transfer function. Also nonlinear neural-network and fuzzy-neural models are investigated for prediction and compensation ...  Read More

Improved Turbine Engine Hierarchical Modeling and Simulation Based on Engine Fuel Control System

Mehrdad bazazzadeh; Hamed Badihi; Ali Shahriari

Volume 6, Issue 1 , March 2009, Pages 45-53

  Aircraft engines constitute a comp‌lex system, requiring adequate mon-itoring to ensure flight safety and timely maintenance. The best way to achieve this, is modeling the engine. Therefore, in this paper, a suitable mathematical model from engine controller design point of view, for a specific aero ...  Read More