A Numerical Investigation Of Three Dimensional Impinging Jets

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A Numerical Investigation Of Three Dimensional Impinging Jets

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Author : Magdi H. Rizk
language : en
Publisher:
Release Date : 1985

A Numerical Investigation Of Three Dimensional Impinging Jets written by Magdi H. Rizk and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.

Progress is reported on the direct numerical simulation complex VTOL flows using the full three-dimensional, time-dependent Navier-Strokes equations. The objective of this numerical simulation is to compute accurately the details of the flow, including the role of initial turbulence in the jet, the influence of forward motion on hover aerodynamics, the collision zone and fountain characteristics, and the jet structure and entrainment process in the transitional flight regime. The unsteady behavior of the jet flow due to forcing at a specific frequency has been investigated. Preliminary results on unsteady single-frequency forcing are presented and a discussion of work in the turbulence aspect of the problem is included. Keywords: Upwash fountain.

An Experimental And Numerical Investigation Of Three Dimensional Jet Flows From Sharp Edged Orifices Microform

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Author : Rainer Rudolf Schwab
language : en
Publisher: National Library of Canada
Release Date : 1986

An Experimental And Numerical Investigation Of Three Dimensional Jet Flows From Sharp Edged Orifices Microform written by Rainer Rudolf Schwab and has been published by National Library of Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.

Numerical Investigation Of Three Dimensionallly Evolving Jets

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Author : James E. Martin
language : en
Publisher:
Release Date : 1991

Numerical Investigation Of Three Dimensionallly Evolving Jets written by James E. Martin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.

Large Eddy Numerical Simulation Of An Array Of Three Dimensional Impinging Jets

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Author : M. H. Rizk
language : en
Publisher:
Release Date : 1987

Large Eddy Numerical Simulation Of An Array Of Three Dimensional Impinging Jets written by M. H. Rizk and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.

Numerical simulations of a row of impinging jets are performed. Both the impinging jets and the fountains caused by the collision of the wall jets are modeled in the simulations. The problem considered contains the essential features of twin jets impinging on the ground, simulating the hovering configuration of a VTOL aircraft. The flow is assumed to be governed by the time-dependent, incompressible Navier-Stokes equations. The large-eddy simulation approach is followed in which all scales resolvable by the grid resolution are computed explicitly, while the small-scale turbulence structures, which are nearly universal in character, are modeled by an eddy viscosity formulation that simulates the energy cascade into the small scales. The Navier-Stokes equations are solved using a staggered computational mesh. Central finite differencing is used to discretize all terms except the convective terms, which are discretized using the QUICK scheme. The Adams-Bashforth scheme is used to advance the solution in time. The pressure Poisson equation is used in place of the continuity equation. Efficient direct solutions are obtained for the pressure field, which allows the continuity equation to be satisfied at each time step. This study focuses on the motion and dynamics of large-scale structures that have been experimentally observed in jet flows. The behavior of the jets and the fountain due to introducing axisymmetric, azimuthal and random disturbances at the jet exists is investigated.

Numerical Investigation Of Hot Gas Ingestion By Stovl Aircraft

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Author : S. P. Vanka
language : en
Publisher:
Release Date : 1998

Numerical Investigation Of Hot Gas Ingestion By Stovl Aircraft written by S. P. Vanka and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Algorithms categories.

Numerical Investigation Of A Single Elliptic Impinging Jet

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Author : Pradeep Sivakumar
language : en
Publisher:
Release Date : 2001

Numerical Investigation Of A Single Elliptic Impinging Jet written by Pradeep Sivakumar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Heat categories.

Numerical Investigation Of Three Dimensionally Evolving Jets

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Author : James E. Martin
language : en
Publisher:
Release Date : 1991

Numerical Investigation Of Three Dimensionally Evolving Jets written by James E. Martin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.

Impingement Jet Cooling In Gas Turbines

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Author : R.S. Amano
language : en
Publisher: WIT Press
Release Date : 2014-05-28

Impingement Jet Cooling In Gas Turbines written by R.S. Amano and has been published by WIT Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-28 with Science categories.

Due to the requirement for enhanced cooling technologies on modern gas turbine engines, advanced research and development has had to take place in field of thermal engineering. Among the gas turbine cooling technologies, impingement jet cooling is one of the most effective in terms of cooling effectiveness, manufacturability and cost. The chapters contained in this book describe research on state-of-the-art and advanced cooling technologies that have been developed, or that are being researched, with a variety of approaches from theoretical, experimental, and CFD studies. The authors of the chapters have been selected from some of the most active researchers and scientists on the subject. This is the first to book published on the topics of gas turbines and heat transfer to focus on impingement cooling alone.

A Numerical Investigation Of An Impinging Jet In A Crossflow

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Author : Cesar Diaz
language : en
Publisher:
Release Date : 1997

A Numerical Investigation Of An Impinging Jet In A Crossflow written by Cesar Diaz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Jets categories.

A numerical investigation of a jet impinging perpendicularly to a ground plane in the presence of crossflow was concluded using INCA, a finite-volume Navier-Stokes equations code.

Three Dimensional Numerical Analysis Of Gas Focused Micro Jets

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Author : Krištof Kovačič
language : en
Publisher:
Release Date : 2023

Three Dimensional Numerical Analysis Of Gas Focused Micro Jets written by Krištof Kovačič and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.