Download or read book Influence of Geometry and Flow Variation on Jet Mixing and NO Formation in a Model Staged Combustor Mixer written by Massumeh H. Samii and published by . This book was released on 1991 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Geometry and Flow Variation on Jet Mixing and NO Formation in a Model Staged Combustor Mixer with Eight Orifices written by and published by . This book was released on 1996 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Geometry and Flow Variation on Jet Mixing and No Formation in a Model Staged Combustor Mixer with Eight Orifices written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-11-22 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of non-reacting parametric experiments was conducted to investigate the effect of geometric and flow variations on mixing of cold jets in an axis-symmetric, heated cross flow. The confined, cylindrical geometries tested represent the quick mix region of a Rich-Burn/Quick-Mix/Lean-Burn (RQL) combustor. The experiments show that orifice geometry and jet to mainstream momentum-flux ratio significantly impact the mixing characteristic of jets in a cylindrical cross stream. A computational code was used to extrapolate the results of the non-reacting experiments to reacting conditions in order to examine the nitric oxide (NO) formation potential of the configurations examined. The results show that the rate of NO formation is highest immediately downstream of the injection plane. For a given momentum-flux ratio, the orifice geometry that mixes effectively in both the immediate vicinity of the injection plane, and in the wall regions at downstream locations, has the potential to produce the lowest NO emissions. The results suggest that further study may not necessarily lead to a universal guideline for designing a low NO mixer. Instead, an assessment of each application may be required to determine the optimum combination of momentum-flux ratio and orifice geometry to minimize NO formation. Experiments at reacting conditions are needed to verify the present results. Samuelsen, G. S. and Sowa, W. A. and Hatch, M. S. Glenn Research Center JET MIXING FLOW; NITRIC OXIDE; GAS TURBINE ENGINES; FLOW GEOMETRY; CROSS FLOW; SUPERSONIC COMBUSTION; ORIFICES; FLOW DISTRIBUTION; MOMENTUM; COLD GAS; OZONE DEPLETION; FLOW VISUALIZATION; TEMPERATURE MEASUREMENT; ASPECT RATIO; MASS RATIOS; TRANSPORT AIRCRAFT; FLUID JETS; SLOTS; CIVIL AVIATION; COMBUSTION CHAMBERS; HOLE DISTRIBUTION (MECHANICS)...

Download or read book Influence of Geometry and Flow Variations on NO Formation in the Quick Mixer of a Staged Combustor written by and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Study of Cross Flow Mixing in Cylindrical and Rectangular Ducts written by D. S. Liscinsky and published by . This book was released on 1993 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ASME Technical Papers written by and published by . This book was released on 1996 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quick Mixing Studies Under Reacting Conditions written by and published by . This book was released on 1996 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mixing of Multiple Jets With a Confined Subsonic Crossflow in a Cylindrical Duct written by James D. Holdeman and published by . This book was released on 1996 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine and Aeroengine Congress & Exhibition, Birmingham, UK, Jun 10-13, 1996.

Download or read book 30th Aerospace Sciences Meeting and Exhibit 92 0760 92 0809 written by and published by . This book was released on 1992 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Two dimensional Non reacting Jet gas Mixing in an MHD magnetohydrodynamic Second Stage Combustor written by and published by . This book was released on 1990 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer simulation is used to aid in the design of a magnetohydrodynamic (MHD) second stage combustor. A two-dimensional steady state computer model, based on mass and momentum conservation laws for multiple gas species, is used to simulate the hydrodynamics of the combustor in which a jet of oxidizer is injected into a confined cross-stream gas flow. The model predicts jet-gas mixing patterns by computing the velocity and species concentration distributions in the combustor. In this paper the effects of parametric variation of jet angle and flow symmetry on the mixing patterns were evaluated. The modeling helps to determine better mixing patterns for the combustor design because improved mixing can increase combustion efficiency and enhance MHD generator performance. A parametric study reveals that (1) non-reacting jet-gas mixing strongly depends on jet angle for coflow injection (jet angle

Download or read book Jet Mixing in a Reacting Cylindrical Crossflow written by M. Y. Leong and published by . This book was released on 1995 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Jet Mixing and Emission Characteristics of Transverse Jets in Annular and Cylindrical Confined Crossflow written by D. B. Bain and published by . This book was released on 1995 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Initial Conditions on a Single Jet in Crossflow written by D. S. Liscinsky and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Study of the Effects of Elevated Pressure and Temperature on Jet Mixing and Emissions in an RQL Combustor for Stable Efficient and Low Emissions Gas Turbine Applications written by and published by . This book was released on 2012 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crossflow Mixing of Noncircular Jets written by D. S. Liscinsky and published by . This book was released on 1995 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A New Unsteady Mixing Model to Predict No x Production During Rapid Mixing in a Dual Stage Combustor written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: An advanced gas turbine engine to power supersonic transport aircraft is currently under study. In addition to high combustion efficiency requirements, environmental concerns have placed stringent restrictions on the pollutant emissions from these engines. A combustor design with the potential for minimizing pollutants such as NO(x) emissions is undergoing experimental evaluation. A major technical issue in the design of this combustor is how to rapidly mix the hot, fuel-rich primary zone product with the secondary diluent air to obtain a fuel-lean mixture for combustion in the second stage. Numerical predictions using steady-state methods cannot account for the unsteady phenomena in the mixing region. Therefore, to evaluate the effect of unsteady mixing and combustion processes, a novel unsteady mixing model is demonstrated here. This model has been used to study multispecies mixing as well as propane-air and hydrogen-air jet nonpremixed flames, and has been used to predict NO(x) production in the mixing region. Comparison with available experimental data show good agreement, thereby providing validation of the mixing model. With this demonstration, this mixing model is ready to be implemented in conjunction with steady-state prediction methods and provide an improved engineering design analysis tool. Menon, Suresh Unspecified Center...