... generation. Because of this, a fundamental understanding of the physical characteristics such as the laminar flame speed is necessary. Most importantly, this information is needed at elevated pressures to have the most relevance to the gas turbine industry for engine design. This study includes experiments...

...Alexander Grahn; Eckhard Krepper; Frank-Peter Weiß; Sören Alt; Wolfgang Kästner; Alexander Kratzsch; Rainer Hampel The present study aims at modeling the pressure drop of flows through growing cakes of compressible fibrous materials, which may form on the upstream side of containment sump strainers...

...-dimensional iteration can be significant in process modeling. Therefore, the International Association for the Properties of Water and Steam (IAPWS) adopted backward equations for pressure as a function of enthalpy and entropy p ( h , s ) as a supplement to the IAPWS Industrial Formulation 1997...

... modulus of contacting materials (N/m 2 ) F asp = force due to asperity contact pressures at ring-liner interface (N) F frc = friction force at the ring-groove interface (N) F gas = force from land gas pressures at ring-liner interface (N...

... performance. Areas looked at were, steam turbine fouling, steam turbine erosion, heat recovery steam generator degradation (scaling and/or ashes deposition), and condenser degradation. The effect of gas turbine back-pressure on plant performance due to HRSG degradation is also discussed. A general simulation...

...D. Taraza The goal of this two-part paper is to develop a methodology using the variation of the measured crankshaft speed to calculate the mean indicated pressure (MIP) of a multicylinder engine and to detect cylinders that are lower contributors to the total engine output. The statistical model...

...D. Taraza The goal of this two-part paper is to develop a methodology using the variation of the measured crankshaft speed to calculate the mean indicated pressure (MIP) of a multicylinder engine and to detect cylinders that are lower contributors to the total engine output. Both the gas pressure...

... evaluated in a CFR engine using n-butane as a fuel. The minimum and maximum loads for HCCI operation were determined using criteria of coefficient of variation of the indicated mean effective pressure and the derivative of in-cylinder pressure, respectively. Exhaust emissions, particularly hydrocarbons...

... the influences of the start of injection, the air/fuel equivalence ratio, injection pressure, and ignition timing on the power output and efficiency of the engine are analyzed. A comparison and discussion is given for all results. It is clearly shown that the start of injection for a certain engine speed...

...K. Kozuka,; T. Ozasa,; T. Fujikawa, and; A. Saito 29 04 2003 internal combustion engines schlieren systems combustion ignition flames fuel pressure In the Subscripts section of the Nomenclature (pg. 341), the second item should have appeared as c , d = ends...

... used for a gas turbine, was designed and constructed, and its performance was evaluated under pressurized conditions of actual operations using a simulated gasified coal fuel. From the combustion test results, the thermal- NO x emission decreased under 11 ppm (corrected at 16% O 2 ), combustion...

... ratio, cell current density, compressor pressure ratio, etc. Diagrams proposed by the author for cost versus efficiency, cost versus specific work, and cost versus system pressure are also presented and discussed. The results of the exergy analysis carried out on the FCGTI system (atmospheric fuel...

... is a typical design for 300/600 MW steam turbines currently in operation. Static pressure at the diffuser tip and hub endwalls and at the hood outer casing is measured and nonuniform circumferential distributions of static pressure are noticed. The velocity field at the model exit is measured and compared...

... with a pressure analysis. The schlieren photographs of the spark, the initial flame and the unburned gas ejection from the piston crevice, which is unable to be observed by direct photography, were clearly taken. It shows that the small difference in the initial combustion process among cycles is intensified...

... offers an explanation and mathematical model of this observation. The analysis rests on the assumption that changes in the mode of flame stabilization are accompanied by a significant variation of the pressure drop across burner and flame, such that the pressure drop-flow rate characteristic locally...

...N. Kim, Graduate Assistant,; S.-Y. Park, Graduate Assistant; D. L. Rhode, Professor A recent CFD perturbation model for turbomachinery seal rotordynamics was extended for labyrinth shunt injection with an arbitrarily high pressure gas. A large number of measured cases with labyrinth injection...

... flow gas turbines performance evaluation pressure In the series arrangement, the compressors are designed to compress the full station flow of 391 * 10 3 Nm 3 / h (350 mmscfd) at approximately half of the total required head. The low pressure (LP) compressor...

... characteristics of a six-cylinder engine passing the EURO III legislation. Some representative points of the 13-mode engine test cycle have been considered modifying the nominal values of injection pressure, injection load, intake pressure, engine speed, and injection timing. The study combines performance...

... introduces the enthalpy-pressure version of the tabular Taylor series (TTSE) method, which has the accuracy and computing speed required for application in power industries. The IAPWS formulation for scientific use, IAPWS-95, was used as the basic Helmholtz equation. The speed and accuracy of the TTSE have...

...U. Yucel; J. Y. Kazakia Labyrinth seals are commonly found in turbines and compressors. Their objective is to control gas leakage from high pressure regions to low pressure regions. The correct prediction and control of this leakage is crucial for the efficient and economic operation...