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2002/01/01 · Forced mixer lobes in ejector designs Article Jul 1986 J PROPUL POWER Presz Bruce L. Morin ROBERT G. GOUSY Forced mixer lobes in augmentor primary ejectors obtain a 100-percent increase in pumping ...
Apr 08, 2010 · 11. The method of claim 10, wherein the ejector shroud has a ring of mixer lobes around an ejector shroud outlet. 12. The method of claim 1, wherein the means for defining a primary fluid stream directs the reduced-energy fluid stream away from a central axis and directs the secondary fluid stream towards the central axis. 13.
Scaled Mixer-ejector high temp alloy prototyping including manufacturability evaluation and changes to comply with design for manufacture: Internal and External Mixer, Ejector Mounting Struts, Ejector (long and short), Ejector Closure, Liners Integration, Inner Mixer Lobes, Foreplug, Foreplug Struts, Plug Waved, Closure Skin.
EJECTORS & VACUUM SYSTEMS Chem Process has been designing Steam Jet Thermocompressors since decades and each unit is designed specifically to suit a customer's process and
2004/05/01 · The co-located grid, SIMPLEC and Chen-Kim modified k - ε turbulence model are applied to investigate numerically the multi-stream flow and temperature fields in the complex channel with a forced mixer lobe at room temperature and at elevated temperature. The body-fitted coordinate grids are generated respectively in …
The ejector nozzle in the HSCT program turned out to be quite large and heavy. This is a limitation with the ejector design. Even though much work has been done to improve mixer-ejector nozzle performance (Refs.
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----- FIGURES (Continued) Number Page 16 Forced oxidation in single-stage scrubber using air ejector to aerate the EHT at pH 6, h = 1.1 m 48 17 Air feed pressure as a function of air injection rate for air-sparged tower and Penberthy ejector 49 18 Forced oxidation in single-stage scrubber, using ejector to aerate the EHT: slurry recycle from EHT 51 19 High limestone utilization test 52 20 ...
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FGD Forced Oxidation Mechanism A Pilot Plant Case Study Philip W. Disney, PE and Larry Vinson ¹Synthetic Materials, 101 E. 2nd Street, Owensboro, KY 42303, ²Western Kentucky
result serves as a base of knowledge useful to the design of a micro-gas turbine engine ejector-mixer. 4 Technical Background 4.1 Ejector-Mixer Theory As the name suggests, an ejector-mixer is composed of two parts: the ejector, and the mixer. The ejector is the shroud in which the engine exhaust primary ﬂow and the ambient conditioned
 W. Presz et al.: Forced Mixer Lobes in Ejector Designs. Journal of Propulsion, 4, pp 350-355, August 1988.  W. Presz et al.: Thrust Augmentation with Mixer/ Ejector Systems. Paper AIAA 2002-0230, 40th AIAA Aerospace
May 23, 2012 · Mechanisms of lobed jet mixing: About circularly alternating-lobe mixers Aerospace Science and Technology, Vol. 98 Research on Nonlinear Oscillation Suppression and Mixing Characteristics of RVABI Base on Bypass Pressure Fluctuation
Oct 15, 2001 · In a continuing effort to study the mixing enhancement by large-scale streamwise vortices generated by a lobed nozzle, a high-resolution stereoscopic particle image velocimetry (PIV) system was used in the present study to conduct three-dimensional measurements of air jet flows exhausted from a lobed nozzle and a conventional circular nozzle. The three-dimensional instantaneous and ensemble ...
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An experiment was set up to investigate the mixing processes downstream of a mixer. Air flow was independently supplied to each side of the forced mixer by separate centrifugal blowers. Pressures were measured at the entrance to the lobes with a pitot-static probe to document the characteristics of the approaching boundary layer.
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Sep 11, 2017 · Also, a comparison of gross thrust (FG) was made at the off-design condition of Sea Level Take-Off (SLTO) when both models were run to the same fuel flow. Again the mixed exhaust design showed a higher gross thrust up to a design BPR of 7, and a loss in thrust for a design BPR of 8.
The mixer-ejector engine consists of a low-bypass ratio mixed flow turbofan coupled to an exhaust mixer ejector configuration (ejector doors and forced mixer) followed by a condi-nozzle (Fig. 1). NLR’s Flight Physics Department (AVFP, Laban) did exploratory CFD design calculations with an Euler code to capture the main flow physics of the ...
Presz Jr WM, Reynolds Jr G, McCormick D (1994) Thrust augmentation using mixer-ejector-diffuser systems. AIAA-94-0020. Proceedings of the 32nd Aerospace Sciences Meeting and Exhibit; Reno, USA. [ Links ] Shan Y, Zhang JZ (2005) Numerical investigation on the effects of lobe nozzles geometric parameters on mixer-ejector performance.
II. COMPONENT OF NEW ERA WIND TURBINE DESIGN In order to extract energy from a larger area of the approaching wind, smaller, sturdier, and faster blades can be used. We try to design a new idea about the shape of fin, cowl, lobed mixer, rotor and stator. There are some of important parts in this new design of wind turbine jet.
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Forced mixer lobes generate large scale axial vorticity which results in rapid mixing and improved diffuser performance. Ejector testing was conducted using both an ejector wind tunnel.
( in C hin ese) [ 4] Presz W M, Gousy R G, Morin B L. Forced mixer lobes in ejector designs[R] . AIAA Paper 86 1614, 1986. [ 5] DeBonis J R. Full navier stokes analysis of a two dimensional mixer/ ejector nozzle for noise
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In the current study three 12-lobe mixers and two 20-lobe mixers are evaluated. A typical internal lobed mixer configuration is shown in Figure 1. The geometries of all five forced mixers evaluated in this study are shown in Figure 2. The 12-lobe mixers all have similar designs, with the primary difference being the lobe penetration height
Forced mixer lobes in augmentor primary ejectors obtain a 100-percent increase in pumping over conventional design, together with nearly complete mixing in very short mixing ducts, through the ...
across both stages for a two-stage ejector also used shorter mixer length-to-diameter ratios (0.5-1) than conventional ejectors due to the presence of three-dimensional lobes in the mixer. The lobes generate streamwise vorticity, promoting momentum exchange between the higher velocity motive stream and the