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2 edition of Analysis of dynamic inlet distortion applied to a parallel compressor model found in the catalog.

Analysis of dynamic inlet distortion applied to a parallel compressor model

Leon M Wenzel

Analysis of dynamic inlet distortion applied to a parallel compressor model

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  • 39 Currently reading

Published by National Aeronautics and Space Administration, for sale by the National Technical Information Service in Washington, Springfield, Va .
Written in English

    Subjects:
  • Compressors

  • Edition Notes

    StatementLeon M. Wenzel and Ronald J. Blaha ; Lewis Research Center
    SeriesNASA technical memorandum ; NASA TM X-3522, NASA technical memorandum -- NASA TM X-3522
    ContributionsBlaha, Ronald J , joint author, United States. National Aeronautics and Space Administration
    The Physical Object
    Pagination22 p. :
    Number of Pages22
    ID Numbers
    Open LibraryOL14927256M

    Fluid mechanics, water hammer, dynamic stresses, and piping design Leishear, Robert Allan For some, the use of the term "water hammer" evokes images of broken and bent piping, multi-million dollar damages, the loss of water supplies to cities, and the deaths of . SIAM Journal on Scientific Computing > Volume 16, Issue 5 > / A framework for model analysis across multiple experiment regimes: Investigating effects of zinc on Xylella fastidiosa as a case study. Numerical simulation of transonic compressor under circumferential inlet distortion and rotor/stator interference using Cited by: FY Annual Progress Report v Advanced Power Electronics and Electric Motors Figure II The clusters obtained from the torque–speed curve of the Nissan LEAF electric motor simulated over. However, the new analytical dynamic model for the void fraction (Equations (5 ) to (4 5)) was obtained based on the slug and semi -slug flow assumptions in which the void fraction dynamically changes in the transitional area due to the difference in acceleration or deceleration of each phase.

    Distribution of the inlet flow Flow between each parallel plate surface Collection oif clarified water ecause these units are essentially open, the “standard” design does not fit into a closed process system without adding some enclosures, and certainly is not suitable for a pressurized condition.


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Analysis of dynamic inlet distortion applied to a parallel compressor model by Leon M Wenzel Download PDF EPUB FB2

Get this from a library. Analysis of dynamic inlet distortion applied to a parallel compressor model. [Leon M Wenzel; Blaha, Ronald J,; United States.

National Aeronautics and Space Administration.]. Parallel compressor models have been traditionally designed and used for the analysis of circumferential distortion effects as a means to evaluate the impact of various Cited by: The computer model, constructed using the parallel compressor theory with extensions, has been exercised and compared with test results from several gas turbine engines to demonstrate the usefulness of this simulation technique.

Distortion patterns used in the tests were created using distortion-generator devices such as distortion software-comparativo.com by: 7. Consider a gas with a MW of 25, inlet temperature of 85°F, and suction velocity of fps.

The piping configuration is a radial inlet multistage compressor with two elbows in different planes upstream of the compressor. The elbow nearest the compressor is in a plane parallel to the rotor. Upstream of the two elbows is a butterfly valve. (source: Nielsen Book Data) Analysis of dynamic inlet distortion applied to a parallel compressor model [] Wenzel, Leon M.

Washington: National Aeronautics and Space Administration ; Springfield, Va.: for sale by the National Technical Information Service, Analysis of dynamic inlet distortion applied to a parallel compressor. The purpose of this paper is to enhance the understanding of the interaction between compressor performance and inlet distortion flow, especially the compressor stall process.

In this paper, three novel distortion coefficients which can both take the inlet distortion flow and the compressor characteristic into account to analyze the software-comparativo.com: Youtian Zhou, Jun Li, Guoxing Song.

Experimental and numerical analysis on the effect of inlet distortion on the performance of a centrifugal fan with a mixing chamber This model uses multiple parallel compressor segments and.

Analysis of dynamic inlet distortion applied to a parallel compressor model / (Washington: National Aeronautics and Space Administration ; Springfield, Va.: For sale by the National Technical Information Service, ), by Leon M.

Wenzel, United States National Aeronautics and Space Administration, and Ronald J Blaha (page images at HathiTrust). Study on the propagation of inlet flow distortion in axial compressor using an integral method Article in Computational Mechanics 30(1) · January with 23 Reads How we measure 'reads'.

The two-dimensional compressor software can fully define the characteristics of any compressor at several operating conditions and is subsequently used in the zero-dimensional cycle analysis to provide a more accurate, physics-based estimate of compressor performance under clean and distorted inlet conditions, replacing the default compressor software-comparativo.com by: 9.

Aug 19,  · ISABE 1. 1 ISABE Inlet Distortion Testing and Analysis of a High-Bypass Ratio Turbofan Engine William T. Cousins, Ph.D. Martin J. Georges Hooman Rezaei, Ph.D. Pratt & Whitney East Hartford, Connecticut USA Abstract Inlet distortion testing of a high-bypass ratio PW engine and modeling predictions of the fan response are presented.

@article{osti_, title = {Aerodynamic optimization of supersonic compressor cascade using differential evolution on GPU}, author = {Aissa, Mohamed Hasanine and Verstraete, Tom and Vuik, Cornelis}, abstractNote = {Differential Evolution (DE) is a powerful stochastic optimization method.

Compared to gradient-based algorithms, DE is able to avoid local minima but requires at the same. An axial compressor is a gas compressor that can continuously pressurize software-comparativo.com is a rotating, airfoil-based compressor in which the gas or working fluid principally flows parallel to the axis of rotation, or software-comparativo.com differs from other rotating compressors such as centrifugal compressor, axi-centrifugal compressors and mixed-flow compressors where the fluid flow will include a "radial.

Prediction of Flutter and Inlet Distortion Driven Response of a Transonic Fan Rotor Using Phase-Lagged Boundary Conditions. D Reduced Order Modeling Techniques for Dynamic Analysis of Mistuned Multi-Stage Turbomachinery Rotors.

Ronnie Bladh, Matthew P Model Identification of a Rotor With Magnetic Bearings. José A. Vázquez, Eric H. The Campbell diagram is an overall or bird's-eye view of regional vibration excitation that can occur on an operating system. The Campbell diagram can be generated from machine design criteria or from machine operating data.

A typical Campbell diagram plot is shown in Figure Engine rotational speed is along the X axis. The system frequency is along the Y axis. Application of the Surge Model to Radial Compressor System Cycle Optimization. Viktor Kilchyk, Ahmed Abdelwahab, Stator Wake Research in Axial-Radial Combined Compressor With Inlet Distortion.

Du Li, Dazhong Lao, Unsteady Analysis on the Effects of Tip Clearance Height on Hot Streak Migration Across Rotor Blade Tip Clearance. Viswanath, K., and Govardhan, M., “Investigations on an Axial Flow Fan Stage Subjected to Circumferential Inlet Flow Distortion and Swirl”, Journal of Thermal Science W.

I, “CFD Analysis on Passenger Car Model for Drag Reduction "Flow Studies in Centrifugal Compressor with Inlet Flow Radially Distorted", Proc. A Methodology for Quantifying Distortion Impacts Using a Modified Parallel Compressor Theory. Manish Pokhrel A Meta-Model for Aerodynamic Properties of a Reversible Profile in Cascade With Variable Stagger and Solidity Development and Testing of a Gas Turbine Engine Combustion Air Inlet Protection Shroud for the USMC Amphibious Combat.

Studies on Wake-Disturbed Boundary Layers Under the Influences of Favorable Pressure Gradient and Free-Stream Turbulence: Part I — Experimetal Setup and Discussions on Transitio. Topics: Creep, High temperature, Stress, Finite element analysis, Finite element methods, Elastic analysis, Density, Fatigue analysis Vibration Measurement Techniques on an.

In this paper, a CFD model is used to simulate the effect of spray atomization at the compressor inlet on a multistage axial subsonic compressor. Special attention is paid to the change of compressor characteristics with wet compression under different rotating speeds to gain the compressor characteristic lines of wet software-comparativo.com: Chunlei Liu, Qun Zheng, Qi Wang, Aqiang Lin, Yuting Jiang, Mingcong Luo.

The aeroelastic stability of helicopter rotors in hovering flight has been investigated by a set of generalized dynamic wake equations and hybrid equations of motion for an elastic blade cantilevered in bending and having a torsional root spring to model pitch-link software-comparativo.com by: 3.

Numerical simulations based on the large eddy simulation approach were conducted with the aim to explore vaneless diffuser rotating stall instability in a centrifugal compressor.

The effect of the impeller blade passage was included as an inlet boundary condition with sufficiently low flow angle relative to the tangent to provoke the instability and cause circulation in the diffuser core flow Cited by: 5.

The parallel compressor concept was studied using a compressor model based on the overall clean-inlet performance map obtained from experimental tests in an altitude chamber using a General Electric J turbojet engine.

J engine. No Access An investigation of boundary-layer transition on the wall of a Mach 5 nozzle. I - Disturbance measurements in a Mach 5 wind tunnel. II - Measurements and calculations of laminar, transitional, and turbulentboundary layers on the wall of a Mach 5 nozzle.

Forced Response Analysis of Compressor Blades under Unsteady Inlet Distortion. Zhang Zhang, Anping Hou, Wei Tuo, Aiguo Xia and; Computational Study of the Stability Derivatives for the Standard Dynamic Model.

Hyungro Lee, Beom-Soo Kim and; Analysis of Dynamic Stall using Dynamic Mode Decomposition Technique. Sathesh Mariappan, Anthony. This book collects peer-reviewed papers from the Asia-Pacific International Symposium on Aerospace Technology (APISAT ) co-organized by four societies in China, Australia, Korea, and Japan and provides insights on the current and future advanced topics in aerospace engineering.

Aug 24,  · AbstractFuzzy and probability-box (p-box) variables exit widely in aerospace engineering. To evaluate the reliability of turbine discs under the mixture of these two types of variables and guarantee safety, the critical point lies in how to deal with the fuzzy variables. In this paper, a novel method based on equivalent transformation of entropy and saddlepoint approximation (SPA) is proposed Cited by: 1.

EVALUATING COMPLEX INLET DISTORTION WITH A PARALLEL. COMPRESSOR MODEL: PART 1 CONCEPTS, THEORY, EXTENSIONS, AND LIMITATIONS ABSTRACT Modeling compression systems using parallel compressor theory has been used for the analysis of.

Full text of "Jet Engine Fundamental Of Theory Design Operations" See other formats. Nov 24,  · An axial compressor is a gas compressor that can continuously pressurize gases. It is a rotating, airfoil-based compressor in which the gas or working fluid principally flows parallel to the axis of rotation, or axially.

This differs from other rotating compressors such as centrifugal compressor, ax. You can write a book review and share your experiences.

Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.

• The main focus of the modeling element is the inclusion of non-constant speed in existing dynamic models of unstable compression systems, and the study of surge and rotating stall in connection with this.

• The focus of the control element is the use of a close coupled valve as a. In the last 20 years, within the area of compressor flow instability, Chen has made many findings in measured internal pressure patterns, wavelet analysis, unsteadiness of tip leakage flow, rotating inlet distortion, micro-tip-injection and flow structures in the tip region.

He has authored over journal and conference papers. EEP - Electrical engineering portal is leading education provider in many fields of electrical engineering, specialized in high- medium- and low voltage applications, power substations and energy generation, transmission and distribution.

This volume contains the contributions to the 17 th Symposium of STAB (German Aerospace Aerodynamics Association). STAB includes German scientists and engineers from universities, research establishments and industry doing research and project work in numerical and experimental fluid mechanics and aerodynamics, mainly for aerospace but also for other applications.

T he second reason may be the model used, here a 2 D model was applied. In fluent, 2 D model is actually computed in a 3 D model with third direction length of 1 m, while the actual model has only 1 in ch in the third direction and from the isolator entrance total pressure profile in F ig ure 3 4 the third direction has much thicke r boundary.

Summary This chapter contains sections titled: A Class Items A priori analyses A Programmable Logic Controller (PLC, or Programmable Controller) A to D or A/D Converter A.C. Electrical Variable Spe.

Ground Resonance Analysis of Bearingless Rotor Dynamic Stability Based on Simplified Model (English A Rigidity and Flexibility Coupling Dynamic Analysis Method Applied in the Stewart Parallel Mechanism. Han, X. / Li, C Finite Element Dynamic Analysis of the Shafting of Transmission-Laser-Scanning-Emitter.

International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research.

Page, JH and Hield, P and Tucker, PG () Effect of Inlet Distortion Features on Transonic Fan Rotor Stall. JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME, ISSN X. Cui, J and Watson, R and Tucker, P and Wilson, M () Low Order Modelling for Fan and Outlet Guide Vanes in Aero-Engines.

Volume 2C.Dynamic Response Analysis of FPSO Based on SESAM Author / Creator: Chen, J.M A Rigidity and Flexibility Coupling Dynamic Analysis Method Applied in the Stewart Parallel Mechanism. Han, X. / Li, C. / Ma, X.G The Design and Simulation Analysis of Virtual Prototype Model for One Kind of Breech Mechanism.

Yang, S.M. / Shao, X.J. / Tian.The analysis techniques herein were successfully applied to the dynamic analysis of an offshore reciprocating compressor package in an engineering project. Automotive engine induction systems may be characterized by significant flow angularity and total pressure distortion at the compressor inlet.

The impact of the swirl on compressor.