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Software synthesis for trade-off design
Proceedings of the 11th Knowledge-Based Software Engineering Conference, 2002This paper details a case study of trade-off design in software synthesis. Domain-oriented software synthesis technology enables software designers to encode their own specific knowledge of software design into transformation rules. Thus, generated software is optimal and actually usable for the domain.
Akiyoshi Sato +3 more
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Off-Design Transition and Separation Behavior of a CDA Cascade
Journal of Turbomachinery, 1996The design of modern axial flow compressor blade sections as well as the code validation require experimental information about the transition and separation behavior of blade surface boundary layers. The experience has shown in the past that such information has to be obtained on the whole surface and not only by point measurements because both ...
Steinert, W., Starken, H.
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2020
It is both surprising but logical that, except for a pure liquefier, a plant is almost never operated at its design conditions due to the safety margin that the client takes. Operation in turn-down regimes, when the final user load decreases, must cope with keeping the highest possible efficiency.
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It is both surprising but logical that, except for a pure liquefier, a plant is almost never operated at its design conditions due to the safety margin that the client takes. Operation in turn-down regimes, when the final user load decreases, must cope with keeping the highest possible efficiency.
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Understanding Off-Design Behavior
2018In this chapter we describe the principles of gas turbine off-design behavior. Understanding the interactions between individual components is a prerequisite of the effective and professional use of any gas turbine performance program. We start with the simplest configuration of a single spool turbojet and study the operating lines in the compressor ...
Joachim Kurzke, Ian Halliwell
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The role of CFD in aerodynamics, off-design
The Aeronautical Journal, 2003AbstractWe discuss the status, trends and long-term ambitions of Computational Fluid Dynamics (CFD) when applied away from the design point or concept, and therefore in the historically weak areas of CFD. This includes both undesirable flight conditions, such as stall, and undesirable products of the flow, such as noise. All pose the great challenge of
P. R. Spalart, D. R. Bogue
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Computational analysis of off-design waveriders
Journal of Aircraft, 1993Comprehensive inviscid and viscous numerical simulations of hypersonic flow past nonconical rounded-nose waveriders are presented. The flow fields and aerodynamic forces at off-design conditions are determined inviscidly by a space-marching CFD code with the initial-data plane provided by a time-marching Navier-Stokes CFD code.
X. HE, M. RASMUSSEN
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Off-Design Performance of Multistage Turbines
Journal of Engineering for Power, 1971Nondimensional equations are developed for the performance of a multistage axial flow turbine operating at conditions which differ from those for which the turbine is designed. The effect of variations in inlet temperature, inlet pressure, exit pressure, and turbine speed is explored. Typical cases are evaluated.
R. P. Kroon, H. J. Tobiasz
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Turbine Aerodynamic Design and Off-Design Performance
2005The turbine component is the power generator in a gas turbine system. As briefly discussed in Chapter 12, within a turbine component, an exchange of mechanical energy (shaft work) with the surroundings takes place. In contrast to compressors, the total energy of the working medium is partially converted into shaft work, thus supplying necessary power ...
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