2 edition of numerical study of the effects of curvature and convergence on dilution jet mixing found in the catalog.
numerical study of the effects of curvature and convergence on dilution jet mixing
J. D. Holdeman
1987 by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, D.C.], [Springfield, Va.? .
Written in English
|Statement||J.D. Holdeman, R. Reynolds and C. White.|
|Series||NASA technical memorandum -- 89878.|
|Contributions||Reynolds, R., White, C., United States. National Aeronautics and Space Administration.|
|The Physical Object|
To study the rheology of such systems, a mixture viscosity is computed from the numerical simulations where a shear flow is applied to a field of spherical particles. Due to the presence of attracting and repelling forces that depend on the geometrical configurations, one expects intensive and complex motion of the particles when they are. under a thermal recovery process, numerical simulators will be needed. In these simulators, the reservoir is divided into a number of blocks arranged in one, two, or three dimensions. A detailed study is made of the reservoir by applying fundamental equations for flow in porous me- dia to each one of the blocks. Studyhelp support students in colleges and universities to get better grades. Our services includes essay writing, assignment help, dissertation and thesis writing.
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Get this from a library. A numerical study of the effects of curvature and convergence on dilution jet mixing. [J D Holdeman; R Reynolds; Numerical study of the effects of curvature and convergence on dilution jet mixing book White; Lewis Research Center.].
An advanced method for dilution zone mixing in a reverse flow gas turbine combustor was numerically investigated. For long mixing lengths associated with reverse flow combustors (X/H > ), pattern factor was found to be mainly driven by nozzle-to-nozzle fuel flow and/or circumferential airflow variations; conventional radially injected dilution jets could not Cited by: 7.
An analytical study of dilution jet mixing in a cylindrical duct to model the effects of curvature and convergence. The principal conclusions from this study were that the orifice spacing and. Numerical study of the effects of curvature and convergence on dilution jet mixing book multidomain and multidimensional numerical analysis of flow in fuelside preburner, high pressure turbine, hot gas manifold and main injector assembly of the Space Shuttle main engine T.
MUKERJEE, L. TAM. In the experimental study of the effects of the nozzle diameter on the flame liftoff characteristics, six nozzles with i.d. of mm, mm, mm, mm, mm and mm were used. Engineering Turbulence Modelling and Experiments rectangular jet of aspect ra the mixing in an interrupted jet is enhanced.
The enhanced mixing is evidenced by a faster decay of the mean streamwise velocity along the jet centerline and higher centerline streamwise turbulence intensities. To study the effects of large-scale eddies.
A Oklahoma State University, Stillwater, OK, NASA numerical study of the effects of curvature and conver- CR (). gence on dilution jet mixing, A IA A Pap.
FERRELL, G. and LILLEY, D. G., Turbulence measure- (Also NASA TM) ments of lateral jet injection into confined turbulent Cited by: By forcefully mixing, rubbing and grinding of gastric contents, the retropulsive jet-like motion and eddy structures have been largely regarded as the main causes driving the gastric digestion of the food (Pallotta and others ; Pal and others ; Schulze ).
However, the numerical results suggested that the characteristics, as well as Cited by: An empirical model for the mixing of a row of dilution jets with a confined crossflow. A numerical study of supersonic viscous cone flow at numerical study of the effects of curvature and convergence on dilution jet mixing book angle of attack.
Curvature effects on stagnation radiative transfer in shock wave around blunt axisymmetric bodies. () Effects of Burned Gas Dilution on the Ignition Delay Time of High Temperature Air Combustion with a Parallel Jet Burner.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series BCited by: Chen B, Yang D, Meneveau C, Chamecki M (). Numerical study of the effects of chemical dispersant on oil transport from an idealized underwater blowout. Physical Review Fluids.
3(8). Bretheim JU, Meneveau C, Gayme DF (). The restricted nonlinear large eddy simulation approach to reduced-order wind farm modeling.
Seminar at NASA LaRC, “Parametric Study of Counterflowing Jet Effects on Slender Bodies,” Sep. 26, 3. Seminar at Environmental Health Sciences Department, UAB, “Interdisciplinary Research on Physics-Based Numerical Simulations of Bio and Environment Related Problems,” Nov.
28, 4. () Numerical and Galerkin’s methods for thermal performance analysis of circular porous fins with various profiles when the surface temperature is higher/lower than the air temperature. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 7, Cited by: Full text of "Studying Turbulence Using Numerical Simulation Databases, 8.
Proceedings of the Summer Program" See other formats. The criteria used to judge the convergence of the numerical solution required a decrease in the value of the scaled residual to 10 −4 for the velocities and to 10 −3 for continuity (Anonymous ).
An adaptive time stepping method was used to Cited by: This study isolated the influence of mixing related to bed morphology and presented a means of calculating a predictive longitudinal mixing equation that directly accounted for pool-riffle sequences.
As an example, a predictive equation was developed by means of a three-dimensional numerical model based on synthetically generated pool-riffle. Full text of "NASA Technical Reports Server (NTRS) Aeronautical engineering: A cumulative index to a continuing bibliography (supplement )" See other formats.
PG Courses of Study only if that is the only requirement for completion of the degree and is recommended by DRC/CRC. For projects, in case X or I grade is awarded in the second semester, the student would be expected to register during summer for completion of the project. Fluid instabilities, particularly interfacial instabilities, have proven to be a powerful mechanism in driving and sustaining combustion processes in several devices of practical interest.
Modern combustors are in fact designed to exploit the mixing and combustion characteristics associated with a broad class of canonical, interfacial : Praveen Ramaprabhu, Nitesh Attal, Hilda Varshochi.
A novel finite difference formulation for differential expressions involving both first and second derivatives Numerical study of natural and mixed convection in a square cavity filled by a Cu–water Dong-Xue Zhao and Kwok-wing Chau, Numerical simulation of the effects of building dimensional variation on wind pressure distribution.
AbstractThe blade deformation caused by aerodynamic and centrifugal loads during operating makes blade configurations different from their stationary shape. Based on the load incremental approach, a novel pre-deformation method for cold blade shape is provided in order to compensate blade deformation under running.
Effect of nonlinear blade stiffness is Author: Kang Da, Wang Yongliang, Zhong Jingjun, Liu Zihao. Full text of "NASA Technical Reports Server (NTRS) Aeronautical engineering: A continuing bibliography with indexes (supplement )" See other formats.
Numerical differentiation using forward and backward differences – Numerical integration – Newton – Cote’s formula – trapezoidal rule – Simpson’s 1/3rd and 3/8th rule – simple problems. effects of curvature – spherical excess – convergence of disposal by dilution – self purification of streams – oxygen sag curve.
AbstractThis paper presents a robust fault identification scheme based on fractional-order integral sliding mode observer (FOISMO) for turbofan engine sensors with uncertainties. The equilibrium manifold expansion (EME) model is introduced due to its simplicity and accuracy for nonlinear system.
A fractional-order integral sliding mode observer is Author: Xiaocong He, Lingfei Xiao. Based on above, a numerical study on the dedusting technology of industrial environment was conducted. The dynamic models of multicomponent particles collision and coagulation, breakage and deposition are developed, and the interaction of water droplet and aerosol particle in 2-Dimension flow field was researched by Eulerian-Lagrangian method.
The present study investigated the relationship between personality characteristics of drivers and the number and amount of fines they have in a study was carried out on male taxi drivers that worked at least seven hours in a day in Lamerd - a city in the south of IRAN.
Opposing jets under conditions typical of industrial furnace air systems are studied using isothermal numerical and physical modelling. The prime motivation for the study comes from an interest in the development of modelling capabilities for the recovery furnaces used in the wood pulping process.
The instability of the jet interaction and nature of the resulting flow states are. Numerical study of the flame structure and swirling motion of small-scale fire whirls resolved and direct measurement of curvature not only on the liquid jet but also potentially on the fragments that issue accounting for all the effects of turbulence on the mixing of chemical species.
These effects are extensive and, inFile Size: 26MB. The study went further to devise a method of determining the optimum position of the jet fan that is responsible for mine-gas dilution at different stages of mining.
Issues in Chemical Engineering and other Chemistry Specialties: Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Chemical Engineering and other Chemistry Specialties.
The editors have built Issues in Chemical Engineering and other Chemistry Specialties: Edition on the vast information Reviews: 1. The problem of multiple turbulent jet interactions is investigated with special attention to applications in kraft recovery boilers. The phenomena due to turbulence are simulated with the k-ε turbulence model, and a multigrid numerical technique is applied to solve the time-averaged Navier-Stokes equations governing the flows.
Investigations carried out include a study on the Cited by: 1. You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read.
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Microfluidic devices have attracted increasing attention in the fields of biomedical diagnostics, food safety control, environmental protection, and animal epidemic prevention.
Micromixing has a considerable impact on the efficiency and sensitivity of microfluidic devices. This work reviews recent advances on the passive and active micromixers for the development of various Cited by: This study focuses on the evaporation and mixing process in turbulent two-phase flows with a direct res- olution of the flow near the interface.
A first approach, using a passive scalar to represent the evaporation and mixing process in a two-phase dense turbulent flow, has been developed and applied in a homoge- neous isotropic turbulence over. This book is the third volume of the LNME book series “Design and Modelling of Mechanical Systems”.
It contains papers presented during the CMSM’ congress. More than participants discussed during the 3 days of the congress, latest advances in the ﬁeld of design and modeling of mechanical systems. Geodesy – shape of earth – effects of curvature – spherical excess – convergence of meridians.
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Lyu, B and Dowling, AP () An experimental study of the effects of lobed nozzles on installed jet noise. Experiments in Fluids, ISSN Ma, Y and Cui, J and Vadlamani, NR and Tucker, P () Hierarchical geometry modelling using the immersed boundary method.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, pp. This book provides a snapshot of the state-of-the art in the study of mammalian cell nuclear architecture, and features a diverse range of chapters written by top researchers.
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Estimation of the Score Vector and Observed Information Matrix in Intractable Models—F Pierre Liu, The University of North Carolina. Download this file. lines ( with data), MB.handle stratified flows with temperature and density stratification effects, with turbulent mixing effects, and possibly using LES for the liquid, would be useful for some two-phase situations.
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