Nondimensional gradually varied flow functions for obtaining gradually varied flow profiles in uniform trapezoidal channels.

Date

1972

Author

Gürsel, Erol

Metadata

Show full item record

Item Usage Stats

44
views

0
downloads

URI

https://hdl.handle.net/11511/5527

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Nonsinusoidal path optimization of a flapping airfoil Kaya, Mustafa; Tuncer, İsmail Hakkı (American Institute of Aeronautics and Astronautics (AIAA), 2007-08-01) The path of a flapping airfoil undergoing a combined, nonsinusoidal pitching and plunging motion is optimized for maximum thrust and/or propulsive efficiency. The nonsinusoidal, periodic flapping motion is described using nonuniform rational B splines. A gradient based algorithm is then employed for the optimization of the nonuniform rational B-spline parameters. Unsteady, low speed laminar flows are computed using a Navier-Stokes solver in a parallel computing environment. The numerical evaluation of the g...
Noncoherent differential demodulation of CPM signals with joint frequency offset and symbol timing estimation Çulha, Onur; Tanık, Yalçın; Department of Electrical and Electronics Engineering (2011) In this thesis, noncoherent differential demodulation of CPM signals with joint carrier frequency offset and symbol timing estimation is investigated. CPM is very attractive for wireless communications owing to major properties: good spectral efficiency and a constant envelope property. In order to demodulate the received CPM signal differentially, the symbol timing and the carrier frequency offset have to be estimated accurately. There are numerous methods developed for the purpose. However, we have not en...
Nonlocal hydrodynamic type of equations Gürses, Metin; Pekcan, Asli; Zheltukhın, Kostyantyn (Elsevier BV, 2020-06-01) We show that the integrable equations of hydrodynamic type admit nonlocal reductions. We first construct such reductions for a general Lax equation and then give several examples. The reduced nonlocal equations are of hydrodynamic type and integrable. They admit Lax representations and hence possess infinitely many conserved quantities.
Nontraditional Attitude Filtering with Simultaneous Process and Measurement Covariance Adaptation Hacızade, Cengiz; Söken, Halil Ersin; Cilden-Guler, Demet (American Society of Civil Engineers (ASCE), 2019-09-01) This study discusses simultaneous adaptation of the process and measurement noise covariance matrixes for a nontraditional attitude filtering algorithm. The nontraditional attitude filtering algorithm integrates the singular value decomposition (SVD) method with the unscented Kalman filter (UKF) to estimate the attitude of a nanosatellite. The SVD method uses magnetometer and Sun sensor measurements as the first stage of the algorithm and estimates the attitude of the nanosatellite, giving one estimate at a...
Nonuform pulse repetition interval optimization for pulse doppler radars Mercan, Hasan; Tanık, Yalçın; Department of Electrical and Electronics Engineering (2004) In this thesis, a method of optimization of nonuniform pulse repetition interval for pulse Doppler radars is investigated. PRI jittering technique is used for the selection of inter-pulse intervals. An environment with white Gaussian noise and clutter interference is defined and applying generalized likelihood ratio test, a sufficient statistic function for the detection of the target is derived. The effect of jitter set selection on range and Doppler ambiguity resolution and clutter rejection is investigat...

Citation Formats

E. Gürsel, “Nondimensional gradually varied flow functions for obtaining gradually varied flow profiles in uniform trapezoidal channels.,” Middle East Technical University, 1972.