Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Dmytro M. Voytovych"'
Publikováno v:
Journal of Propulsion and Power. 33:522-530
A computational fluid dynamics-based analysis has been performed to assess propulsive efficiency benefits of a boundary layer ingesting propulsion system. This analysis is based on a full-scale con...
Autor:
Waruna D. Kulatilaka, Charles L. Merkle, A. H. Bhuiyan, Robert P. Lucht, Charles C. Tseng, Dmytro M. Voytovych, J. R. Hulka, Gregg W. Jones
Publikováno v:
Experiments in Fluids. 46:559-575
The transient injection and mixing between nitrogen and helium in a confined chamber at atmospheric pressure is studied experimentally. The 2D injector and mixing chamber contained a middle injection slot for nitrogen flanked by a pair of outer slots
Publikováno v:
51st AIAA/SAE/ASEE Joint Propulsion Conference.
A Computational Fluid Dynamics (CFD) based analysis has been performed to assess propulsive efficiency benefits of a Boundary Layer Ingesting (BLI) propulsion system. This analysis is based on a full-scale configuration at relevant flight conditions
Autor:
Charles L. Merkle, Dmytro M. Voytovych
Publikováno v:
46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
Simulations of a coupled supersonic inlet and fan were carried out for to analyze the effects of developed radial distortion on fan performance and stability. The coupling at the interface between the inlet and fan was accomplished using a mixing pla
Publikováno v:
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition.
κ turbulence model. A choked nozzle with adjustable throttle area was used for the outlet boundary to allow natural flow development and to control mass flow rate along a speed line. The results demonstrated that including the nozzle helped to compu
Publikováno v:
ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C.
The flow analysis around blades of a transonic fan is presented for both clean and radially distorted inlets. Computations are shown for four-blade passages that are accomplished with a second order accurate code using a k-ω turbulence model. The ma
Publikováno v:
47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition.
Autor:
Charles L. Merkle, Dmytro M. Voytovych
Publikováno v:
47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition.
The aerodynamic instability known as rotating stall of an isolated fan is considered. Steady and unsteady 3-D simulations were carried out for flows around a high-speed transonic aero-engine fan. Several speed characteristic lines of the performance
Publikováno v:
44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
Numerical simulations of a start-up helium flow injected into an established background flow of nitrogen are carried out to identify the dominant features of the transient mixing process between these two dissimilar gases. Simulations were accomplish
Publikováno v:
43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit.
The transient mixing between gases of dissimilar molecular weight is simulated numerically with a goal of identifying which type of initial condition most closely matches companion experimental observations. Nitrogen and helium are chosen as the work