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3 edition of Probabilistic modeling for simulation of aerodynamic uncertainties in propulsion systems found in the catalog.

Probabilistic modeling for simulation of aerodynamic uncertainties in propulsion systems

A. Hamed

Probabilistic modeling for simulation of aerodynamic uncertainties in propulsion systems

by A. Hamed

  • 345 Want to read
  • 35 Currently reading

Published by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, D.C.], Springfield, Va .
Written in English

    Subjects:
  • Turbine pumps.,
  • Aerothermodynamics.,
  • Panel method (Fluid dynamics),
  • Probability theory.,
  • Propulsion system configurations.,
  • Propulsion system performance.,
  • Reusable rocket engines.,
  • Systems simulation.,
  • Turbine pumps.

  • Edition Notes

    StatementAwatef Hamed and Institute for Computational Mechanics in Propulsion.
    SeriesNASA technical memorandum -- 102472.
    ContributionsLewis Research Center. Institute for Computational Mechanics in Propulsion., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination26 p.
    Number of Pages26
    ID Numbers
    Open LibraryOL16128074M

      [47] Morelli E. A., Cunningham K. and Hill M. A., “ Global Aerodynamic Modeling for Stall/Upset Recovery Training Using Efficient Piloted Flight Test Techniques,” AIAA Modeling and Simulation Technologies Conference, AIAA Paper , Aug. Link Google Scholar [48] Grauer J. A. and Morelli E. A. Industrial applications frequently pose a notorious challenge for state-of-the-art methods in the contexts of optimization, designing experiments and modeling unknown physical res.

    Probabilistic Modeling / Uncertainty Analysis Complex questions in environmental science are not usually answered by a single model simulation generated by one set of idealized input parameters. Rather, the best solution may be a collection or ensemble of model results that characterize the range of environmental conditions observed in the real. Probabilistic modeling and Monte Carlo simulation Probabilistic modeling is any form of modeling that utilizes presumed probability distributions of certain input assumptions to calculate the implied probability distribution for chosen output metrics. This differs from a standard deterministic model, say a typical Excel spreadsheet.

      Let's define a model, a deterministic model and a probabilistic model. Model: it is very tricky to define the exact definition of a model but let’s pick one from Wikipedia. > A mathematical model is a description of a system using mathematical con. nonlinear, unsteady aerodynamics. simulation of flow fields for complex configurations. modeling tools for propulsion-airframe integration. stiff, lightweight structures for highly-loaded propulsion systems. fluid seals. high-load, long-life bearings. probabilistic structural design methods for .


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Probabilistic modeling for simulation of aerodynamic uncertainties in propulsion systems by A. Hamed Download PDF EPUB FB2

Computing Systems in Engineering Vol. 1, Nospp. 19tX) /90 $3.(XI+0.(X) Printed in Great Britain. Pergamon Press pie PROBABILISTIC MODELING FOR SIMULATION OF AERODYNAMIC UNCERTAINTIES IN PROPULSION SYSTEMS A. HAMED~ and C. CHAMIS~ tDepartment of Aerospace Engineering and Engineering Mechanics, University of Cited by: 3.

PROBABILISTIC MODELING FOR SIMULATION OF AERODYNAMIC UNCERTAINTIES IN PROPULSION SYSTEMS Awatef Hamed* Department of Aerospace Engineering & Engineering Mechanics University of Cincinnati Cincinnati, OH and Institute for Computational Mechanics in Propulsion Lewis Research Center Cleveland, OH ABSTRACT.

Get this from a library. Probabilistic modeling for simulation of aerodynamic uncertainties in propulsion systems. [A Hamed; Lewis Research Center. Institute for Computational Mechanics in Propulsion.; United States. National Aeronautics and Space Administration.].

Probabilistic modeling for simulation of aerodynamic uncertainties in propulsion systems Article (PDF Available) in Computing Systems in Engineering 1() February with 23 Reads.

Probabilistic modeling for simulation of aerodynamic uncertainties in propulsion systems. By C. Chamis and A. Hamed. Abstract. The numerical simulation of the probabilistic aerothermodynamic response of propulsion system components to randomness in their environment was explored.

The reusable rocket engine turbopumps were selected as an Author: C. Chamis and A. Hamed. Probabilistic modeling for simulation of aerodynamic uncertainties in propulsion systems By A. (Awatef) Hamed, United States.

National Aeronautics and. Four probabilistic models of occupant adaptive behavior selected from recently published literature, with respect to (1) window opening (Haldi and Robinson, ), usage of (2) shade (Haldi and Robinson, ), (3) heaters and fans (Nicol, ), and (4) artificial lighting systems (Nicol, ), have been implemented into the building energy.

Abstract. Development of reliability and risk methods for structural components and structures is a major activity at Lewis Research Center. It consists of six program elements: (1) probabilistic loads, (2) probabilistic finite element analysis, (3) probabilistic material behavior, (4) assessment of reliability and risk, (5) probabilistic structural performance evaluation, and (6) extension to.

To expedite the use of numerical propulsion system simulation in aircraft design, this research proposes a methodology for the reduced-order modeling of numerical propulsion system simulation.

Motivation Why probabilistic modeling. I Inferences from data are intrinsicallyuncertain. I Probability theory: model uncertainty instead of ignoring it.

I Applications: Machine learning, Data Mining, Pattern Recognition, etc. I Goal of this part of the course I Overview on probabilistic modeling I Key concepts I Focus on Applications in Bioinformatics O. Stegle & K. Borgwardt An introduction. Structural Aerodynamics and Ocean System Modeling Laboratory, Cullen College of Engineering, University of Houston, Houston, TX (U.S.A.) (Received J ; accepted in revised form May 5, ) ABSTRACT Uncertainties associated with the load effects and dynamic characteristics of wind-excited struc.

Recently, a novel nonparametric probabilistic method for modeling and quantifying model‐form uncertainties in nonlinear computational mechanics was proposed. Its potential was demonstrated through several uncertainty quantification (UQ) applications in vibration analysis and nonlinear computational structural dynamics.

The last portion of the course is on applied probability modeling (Markov Chains) and queueing theory. We will use this book to supplement the material on Markov chains and queueing theory Sheldon Ross.

Introduction to Probability Models, 9th Edition (Academic Press, ). A great book on an introduction to serious probabilistic modeling. ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering ASME Letters in Dynamic Systems and Control Journal of Applied Mechanics.

Read "Uncertainties and dispersion assessment: some challenges associated with missile aerodynamics, International Journal of Engineering Systems Modelling and Simulation" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

given system model (in this case, the X flight control system) and introduces statistical uncertainties on as many of the individual mathematical models (for example, aerodynamics, propulsion, actuators, propellants, winds) as practical.

These uncertainties were categorized for this analysis using a Gaussian. Probabilistic Modeling of Financial Uncertainties: /IJOCI Since the global financial crash, one of the main trends in the financial engineering discipline has been to enhance the efficiency and flexibility of.

Combining simulation experiments and analytical models with area-based accuracy for performance evaluation of manufacturing systems 22 February | IISE Transactions, Vol.

51, No. 3 Efficient multi-response adaptive sampling algorithm for construction of variable-fidelity aerodynamic tables. The optimal reactive power dispatch (ORPD) problem is an important issue to assign the most efficient and secure operating point of the electrical system. The ORPD became a strenuous task, especially with the high penetration of renewable energy resources due to the intermittent and stochastic nature of wind speed and solar irradiance.

In this paper, the ORPD is solved using a new natural. Probabilistic model identification of uncertainties in computational models for dynamical systems and experimental validation C.

Soize ∗,a, E. Capiez-Lernouta, J.-F. Duranda,b, C. Fernandeza,b, L. Gagliardinib aUniversit´e Paris-Est, Laboratoire Mod´elisation et Simulation Multi Echelle, MSME FRE CNRS, 5 bd Descartes, Marne la Vallee Cedex 2, France. In this internship one has proposed a probabilistic approach based on an experimental dataset of inflow parameters to account for the uncertainties of the flow prediction.

In this framework, from the CFD point of view, these varying data can be seen as uncertain inputs and one has proposed to develope methods to simulate realizations of these Title: Mechanical/Aeronautical Engineering.The aerial platform is characterized by the aerodynamic model and the propulsive system model.

The former one is based on an experimentally derived dataset of stability and control derivatives. The aerodynamic forces (FA) and moments (MA) are obtained by modeling the dependencies on flight condition (dynamic pressure), aerodynamic.given system model (in this case, the X flight control system) and introduces statistical uncertainties on as many of the individual mathematical models (for example, aerodynamics, propulsion, actuators, propellants, winds) as practical.

These uncertainties were categorized for this analysis using a Ganssian.