This virtual wind tunnel, depicted in figure 1, will permit rapid, affordable computation of stability, cost, lifetime, and certification requirements. How is numerical propulsion system simulator abbreviated. Interested parties can download a temporary trial version or purchase an annual license, either academic or commercial. The propulsion system behaviour is a key aspect for the overall dynamics of a ship.
Introduction to numerical propulsion system simulation npss. The objective of the numerical propulsion system simulation npss is to provide insight into these complex interactions through computational simulations. Interested parties can download a trial version or purchase an annual license either as a university. Numerical propulsion system simulation how is numerical propulsion system simulation abbreviated. Development of a prototype simulation executive with zooming. Numerical propulsion system simulation npss is an objectoriented, multiphysics, engineering design and simulation environment that enables development, collaboration and seamless integration of system models. Pumpjet is one of these new systems, mainly employed for the underwater applications. Download citation the numerical propulsion system simulation. A modelling approach for the overall ship propulsion plant. High fidelity, nonlinear, integrated nozzle installation. The program aids in unifying the nozzle, chamber and injector portions of a rocket propulsion system design effort quickly and efficiently using a streamlined graphical user interface gui.
The modular aeropropulsion system simulation mapss is a flexible turbofan engine simulation environment that provides easy access to health, control, and engine parameters through a. Theotokatos shipbuilding department, school of technological applications tei of athens st. Numerical propulsion system simulation ora research. The nasa glenn research center, in partnership with the aerospace industry, other government agencies, and academia, is leading the effort to develop an advanced multidisciplinary analysis environment for aerospace propulsion systems called the numerical propulsion system simulation npss. Modular aeropropulsion system simulations mapss, cmapss. Eai is the official distributor after prior approval from esa and the primary developer of the libraries. In proceedings of 5th symposium on high speed marine vehicles, capri, 2526 march, 1999, paper no. Numerical study on the unsteady hydrodynamic performance. An objectoriented framework for distributed computational.
Npss is defined as numerical propulsion system simulator somewhat frequently. An overview advances in computational technology and in physicsbased modeling are making largescale, detailed simulations of. Pergamon press plc numerical propulsion system simulation r. Numerical propulsion system simulation sciencedirect. Numerical simulation of ship propulsion transients and full. Numerical propulsion system simulation consortium npss tm user guide software release. The integral team has been working for two years to support glenns numerical propulsion system simulation npss, an effort that has received nasas prestigious turning goals into reality tgir award last april. Npss is an objectoriented, multiphysics, engineering design, and simulation environment that enable the development, collaboration, and seamless integration of system models. Numerical propulsion system simulation an interdisciplinary. Modular aeropropulsion system simulations mapss, cmapss, cmapss40k. Npss single academic license agreement, numerical propulsion system simulation npss is an objectoriented, multiphysics, engineering design and simulation environment that enables development, collaboration and seamless integration of system models.
This analysis tool set is intended to enable fast, accurate estimation of losses in an engine cycle model with minimal effort on the part of the user. The npss project, being developed at the interdisciplinary technology office at the nasa lewis research center is a numerical test cell designed to provide for comprehensive computational design and analysis of aerospace propulsion systems. As an important overcurrent component of the waterjet propulsion system, the main function of a nozzle is to transform the mechanical energy of the propulsion pump into the kinetic energy of the water and eject the water flow to obtain thrust. However, despite its great importance, numerical methodologies for detailed investigations on marine propulsion dynamics are not yet widely covered in. In this work, the coupling of a ship manoeuvrability model in 6dofs with the complete propulsion system simulator, resulting in a multiphysic simulation platform, is presented.
Lytle national aeronautics and space administration glenn research center cleveland, ohio 445 summary advances in computational technology and in physicsbased modeling are making largescale, detailed simulations of complex systems possible within the design environment. A modelling approach for the overall ship propulsion plant simulation g. However, despite its great importance, numerical methodologies for detailed investigations on marine propulsion dynamics are not yet widely covered in scientific literature. Development of a prototype simulation executive with. Generic engine cycle model for analysis in npss including inlet, compressor, burner, turbine, duct and nozzle. This will allow for comprehensive evaluation of new concepts early in the design phase before a commitment to hardware is made. The model, developed in a matlabsimulink software environment, is structured in modular form. Mar 01, 2017 a numerical simulation of the coupled rotatingoscillating motion of a fourpropeller propulsion system was conducted on the basis of the oversetgrid technique considering gravity. Npss stands for numerical propulsion system simulator. Numerical propulsion system simulation southwest research institute, mechanical engineering division machinery department 7 how to get npss for commercial and individual academic users, npss may be obtained from the consortium website. Marine propulsion simulation download ebook pdf, epub. The model accurately predicts the global behavior of the spacecraft propulsion system in the priming and shutdown process, and also correctly describes the transient behavior of the subsystems.
The numerical propulsion system simulation npss code was created through a joint united states industry and national aeronautics and space administration nasa effort to develop a stateoftheart aircraft engine cycle analysis simulation tool. This paper describes the development of the numerical propulsion system simulation npss, a modular and extensible framework for the integration of multicomponent and multidisciplinary analysis tools using geographically distributed resources such as computing platforms, data bases, and people. Numerical investigations of the engine cooling system in a small power vessel pod propulsion system. Introduction to numerical propulsion system simulation. This book presents the main steps for the development of a multiphysic simulation platform, able to represent the motions of a twin screw. Design, analysis, and simulation of rocket propulsion system. In conceptual and preliminary design, many aspects of mechanical products are most efficiently modeled for simulation using 0d1drigid entities. In the present paper, a modelling approach for the simulation of the overall ship propulsion plant is presented. The advantage of pumpjet over other propulsion systems can be defined by two factors including high efficiency and very low acoustic effects. The simulation uses validated models for fluid mechanics, heat transfer. Translation find a translation for numerical propulsion system simulation in other languages.
This paper describes the implementation and application of a new set of thermodynamic loss analysis tools in the numerical propulsion system simulation. Numerical study on the unsteady hydrodynamic performance of a. This will provide the product developer with avirtual wind tunnel that will reduce the number of hardware builds and tests required during the development of. System dynamic characteristic simulation of spacecraft. Numerical analysis of ducted propeller and pumpjet. Numerical propulsion system simulation npss, a multidisciplinary system of analysis tools that is focussed on extending the simulation capability from components to the lull system. Physical and numerical modeling for advanced propulsion. Numerical propulsion system simulations npss for space. Physical and numerical modeling for advanced propulsion systems. To address these issues, we have developed onyx, a javabased objectoriented application framework for aerospace propulsion system simulation. Implementation of engine loss analysis methods in the. Npss numerical propulsion system simulator acronymattic. The modular aeropropulsion system simulation mapss is a flexible turbofan engine simulation environment that provides easy access to health, control, and engine parameters through a graphical user interface gui.
Numerical simulation of ship propulsion transients and. Modular aeropropulsion system simulations mapss, c. The hydrodynamic performance of the multipropeller system was calculated and analyzed under four working conditions. In this study, the nozzle with different geometry and parameters was simulated based on computational fluid dynamics simulation and experiment. Jan 02, 2015 american institute of aeronautics and astronautics 12700 sunrise valley drive, suite 200 reston, va 201915807 703. In order to investigate the dynamic characteristic of the spacecraft propulsion system, numerical simulation was carried out based on the modular and extensible simulation model upssim. Received 21 may 1991 atraetthe cost of implementing new technology. Nowadays surface and underwater vessels with modern propulsion systems and proper hydroacoustic performance have been emerged.
One such system is being developed by the numerical propulsion system simulation npss project. The development of electronics and electrotechnology enabled to put electric motors of the alternating current in the pod and to use them for the main drive of ships. The paper describes a mathematical model for the dynamics simulation of ship propulsion systems. Steadystate modeling of gas turbine engines using the. Physical and numerical modeling for advanced propulsion systems 3 ep. Nichols nasa lewis research center, interdisciplinary technology office, cleveland, oh 445, u. Npss software, numerical propulsion system simulation npss y ou can purchase npss commercially through the npss consortium website. Benvenuto, g, figari, m, ruggiero, v waterjet propulsion system performance prediction by dynamic numerical simulation.
Received 21 may 1991 atraetthe cost of implementing new. Numerical propulsion system simulation how is numerical. European space propulsion system simulation espss is an european space agency esa toolkit for modelling rocket and satellite propulsion systems. An application was developed to allow users to run and view the numerical propulsion system simulation npss engine simulations from web browsers. This concept is called the numerical propulsion system simulation npss. American institute of aeronautics and astronautics 12700 sunrise valley drive, suite 200 reston, va 201915807 703. Realtime simulation of a cogag naval ship propulsion system. What is numerical propulsion system simulation npss. Jun 21, 2018 modular aeropropulsion system simulations mapss, cmapss, cmapss40k. The nasa glenn research center, in partnership with the aerospace industry, other government agencies, and academia, is leading the effort to develop an advanced multidisciplinary analysis environment for aerospace propulsion systems called the. This paper presents the progress in developing the numerical propulsion system simulation, a multifidelity simulation of a complete propulsion system. Numerical investigations of the engine cooling system in a.
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