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Monday, July 27, 2020 | History

3 edition of Advanced 3-D viscous SSME turbine rotor stator CFD algorithms 6 September 85 - 5 September 86 found in the catalog.

Advanced 3-D viscous SSME turbine rotor stator CFD algorithms 6 September 85 - 5 September 86

Advanced 3-D viscous SSME turbine rotor stator CFD algorithms 6 September 85 - 5 September 86

final report

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English


Edition Notes

StatementJ. Mark Janus, David L. Whitfield
SeriesNASA contractor report -- NASA CR-178997
ContributionsWhitfield, David L, United States. National Aeronautics and Space Administration
The Physical Object
FormatMicroform
Pagination1 v
ID Numbers
Open LibraryOL14985538M

A numerical study of the real flow through a Francis turbine having a specific speed n qopt = 80,3 min−1 was carried out to predict the pressure pulsations induced by the interaction between rotor and stator, as well as by the draft tube vortex rope and by the . The three-dimensional (3D) computational fluid dynamics (CFD) study on Tri-O-Gen radial turbine for ORC system with toluene as working fluid with power output of 5 kWe was performed in [8]. The 1D.

The turbine that drives the gas generator is located directly behind the combustion chamber outlet. This turbine consists of two basic elements: the stator or nozzle and the rotor. Part of a stator Figure —Stator element of turbine assembly. element is shown in figure A rotor element is shown in figure 6 . 5 Diffuser torsion 6 Case rocking + bending, Z 7 Rotor translation, Y 8 a Rotor translation, Z 9 Rotor rocking, Z 10 a Rotor rocking, Y 11 Rotor axial, X 12 Case + rotor rocking, Z 13 Rotor bending, Y 14 a Rotor bending, Z 15 Turbine .

surfaces 2 and 3 is the rotor. Mesh The flow volume was structurally discretised by means of hexahedral elements. The total number of elements for start and optimal case was about million elements. Details are listed in table 1. Figure 4 shows rotor mesh and figure 5 stator mesh for start case δr = , δs = 2. Unsteady Viscous Flow Causing Rotor-Stator Interaction in Turbines, Part 1: Data, Code Pressure. 3-D Navier-Stokes Simulation of Rotor-Stator Interactions in a 1 1/2-Stage Compressor. Journal of Propulsion and Power Vol. 16, No. 5 September


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Advanced 3-D viscous SSME turbine rotor stator CFD algorithms 6 September 85 - 5 September 86 Download PDF EPUB FB2

Get this from a library. Advanced 3-D viscous SSME turbine rotor stator CFD algorithms 6 September September final report. [J Mark Janus; David L Whitfield; United States. National Aeronautics and Space Administration.].

Advanced 3-D Viscous SSME Turbine Rotor Stator CFD Algorithms. The development of a scalable parallel 3-D CFD algorithm for turbomachinery.

September. Mississippi State University Department of Aerospace Engineering David L. Whitf ield Drawer A Mississippi State, MS ; Advanced D Viscous SSME Turbine Rotor Stator CFD Algorithms 5 85 9 5 September 86 September Final Report NAS J.

Mark Janus David L. Whitf ield Prepared for. Experimental and CFD Analysis for Rotor-Stator Interaction of a Waterjet Pump H. Chun, W. Park, and J. Jun (Pusan National University, Korea) ABSTRACT The numerical analysis of a waterjet propulsion system was performed to provide a detail understanding of complicated three-dimensional viscous flow phenomena including the interactions.

Computational Fluid Dynamics (CFD) simulations of the flow field around the National Renewable Energy Laboratory (NREL) Phase VI horizontal axis wind turbine rotor. The 3-D, unsteady, parallel, finite volume flow solver, PUMA2, is used for the simulations. The solutions are obtained using unstructured moving grids rotating with the turbine.

It has the following characteristics: d Stator ¼ m h Stator ¼ m Number of slots on the stator ¼ 72 Width of slots ¼ 2mm Height of slots ¼ 22 mm Number of circular orifices on the upper part of the stator ¼ 8; d Rotor ¼ D ¼ m Height of rotor blades ¼ m; Rotor-stator gap ¼ d Gap ¼ mm.

Viscous Newtonian and. Here there is few things to consider why this happend, As we had a previous discussion, the rotor interface is extended upto the surface of internal wall of a casing (which is the stator part), So when I did this and subtracted the rotor part from the stator to get the meshing domain of the stator, that circular surface was deleted from the stator casing wall, but since the stator casing is.

The stator-rotor interaction is an important issue in turbomachinery design when the highest performances are targeted. Different characters mark the interaction process in high-pressure or low-pressure turbines depending both on the blade height and on the Reynolds number.

For small blade heights, being the stator secondary flows more important, a more complex interaction is found with. A turbine (/ ˈ t ɜːr b aɪ n / or / ˈ t ɜːr b ɪ n /) (from the Latin turbo, a vortex, related to the Greek τύρβη, tyrbē, meaning "turbulence") is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work produced by a turbine can be used for generating electrical power when combined with a generator.

A turbine is a turbomachine. In Water Turbine CFD our engineers made good use of many years experience with using and developing OpenFOAM®. Especially for this methodology we have developed special OpenFOAM® boundary conditions e.g. to handle the rotor - stator interface or boundary conditions for the inlet and the outlet of the computational domain.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. CFD Study of the Rotor-Stator Interaction in a Francis Turbine v PREFACE PROJECT ORIGIN The CDIF researches the area of Fluid Mechanics and Turbomachinery.

It investigates the fluid-structure interaction phenomena in simple structures such as blades and more complex as the rotors. Use of computational fluid dynamics (CFD) to model the complex, 3D disk cavity flow and heat transfer in conjunction with an industrial finite element analysis (FEA) of turbine disk thermomechanical response during a full transient cycle is demonstrated.

The FEA and CFD solutions were coupled using a previously proposed efficient coupling. ASME PVP Conference, CFD Symposium, Boston, The stator and rotor part of the turbine is shown in fig-ure 2. The stator consists of 12 guide vanes and the rotor of 15 blades.

Therefore periodicity can be assumed for 4 stator and 5 rotor channels. Figure 1: AXENT, axial pressure recovery turbine Figure 2: Geometry of stator and rotor. McFarland, Vernon E., and Tiederman, William G. "Viscous Interaction Upstream and Downstream of a Turbine Stator Cascade With a Periodic Wake Field." Proceedings of the ASME International Gas Turbine and Aeroengine Congress and Exposition.

Volume 1: Turbomachinery. Cologne, Germany. June 1–4, VT01A ASME. numerical study was conducted using computational fluid dynamics (CFD) on a one-stage test turbine in order to investigate the flow structure and pressure distribution in the turbine disc cavity.

The test turbine consists of a newly designed blisk which is soon to be installed at Energy department, Royal Institute of Technology (KTH).

[1,2]. However, the previous computational studies [] were mainly considering two-dimensional axis-symmetrical arrangements, where a rotor-stator interaction problem, as such, does not arise. A three-dimensional simulation of a cover-plate receiver flow was presented in [6] and recently in [].

However, in those studies [], a quasi-steady. Fig. 3, Fig. 4 illustrate the flow field and strain rate distribution for a Newtonian fluid (k=, n=1) and a shear-thinning power-law fluid (k=, n=) at a rotational speed of 10 rad s −1 (N5 in Table 1).The higher velocity appears around the rotational parts with the highest velocity at the tip.

The flow in the mixer is primarily circumferential, and some vortex occurs around the. The first one simulates the stator exit shape and consists of straight walls without thickness. The second one which simulates the rotor inlet shape is realistic compared to the real turbine leading edges.

The computation is carried out on a domain which includes one blade-to-blade passage of the stator and four blade-to-blade passages of the.

The flow structure in a stator rotor cavity with superposed flow is characterized by means the combination of the previous two: t = C. Re − 4 / 5. ϕ (3) For example, the minimum value of mass flow necessary to prevent ingress in a unshrouded stator rotor cavity can be calculated using this parameter (the solution of the boundary layer.

RVCQ3D (Rotor Viscous Code QuasiD) is a computer code for analyzing inviscid and viscous blade-to-blade flows in turbomachinery. It includes the quasiD effects of rotation, radius change, and variable stream surface thickness.

Simple flat plate and duct geometries can also be analyzed. Applications.Numerical analysis of 3-D unsteady flow in a vaneless counter-rotating turbine Frontiers of Energy and Power Engineering in China, Vol.

1, No. 3 Innovative procedure to minimize multi-row compressor blade dynamic loading using rotor-stator interaction optimization.Transonic Flow ASME Paper Rotor Wheel Turbine Stage Stator Blade Journal of Computational Fluid Dynamics.

3, zbMATH Google Scholar. He L. and Ning W. (). 14–18 September, – Google Scholar. Moyroud F., Jacquet-Richardet G., and Fransson T. H. (). A modal coupling for fluid and structure analysis of turbomachine.