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Saturday, May 9, 2020 | History

2 edition of Numerical computation of gas flow through an exhaust duct found in the catalog.

Numerical computation of gas flow through an exhaust duct

Manases Menang TitahMboh

Numerical computation of gas flow through an exhaust duct

an investigation of the exit boundary conditions

by Manases Menang TitahMboh

  • 311 Want to read
  • 19 Currently reading

Published .
Written in English


Edition Notes

Thesis (Ph.D.) - Loughborough University, 1997.

Statementby Manases Menang TitahMboh.
ID Numbers
Open LibraryOL23129015M

On numerical simulations of flow and heat transfer of the bend part of a U-duct T. Salameh & B. Sundén Department of Energy Sciences, Division of Heat Transfer, Lund University, Sweden Abstract Two dimensional numerical simulations of the flow and temperature fields inside the bend (turn) part of a U duct have been performed. This paper is concerned with the numerical simulation of unsteady turbulent flows behind sudden expansions without inlet swirl. Time dependent simulations have been carried out using the VLES approach with the standard k-ε model. The expansion ratio investigated is in the range from –Cited by:

Numerical Analysis of Heat Transfer and Flow of Stator Duct Models Maximilian Schrittwieser, Andreas Marn, Ernst Farnleitner, and Gebhard Kastner Abstract This paper describes the analysis of the •uid •ow in the stator ducts of a hydrogenerator using computational •uid dynamics. 6 MW = molecular weight of the gas. T 1 = upstream absolute temperature in the pipe, oR. Y = Expansion Factor of the gas – see equation for Y below. Gas Expansion Factor: The expansion factor, Y, is needed for gas flow through a differential pressure flow meter in order to account for the decrease in .

Keywords—Numerical method, unstructured grid, heat transfer, fully developed flow, complex geometry. I. INTRODUCTION Study of thermal hydraulic characteristics for laminar fullydeveloped flow through ducts of different cross section assumes importance in design of heat exchangers of existing geometric configuration, as well as, for. the fluid flow inside an automotive air duct • To model two different configurations: frontal air exhaust (defrost) and air flow directed to the user (face) • To study the velocity and mass-flow at the exits of both configurations. Goals.


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Numerical computation of gas flow through an exhaust duct by Manases Menang TitahMboh Download PDF EPUB FB2

A gas flow in the exhaust duct of the gas turbine setup GPA-C, produced on the basis of the gas turbine engine NKST (JSC “KUZNETSOV”) (), has been engine exhaust duct includes the volute with the exhaust axial-radial diffuser and the exhaust stack that represents a rectangular diffusor by: 2.

The paper describes the application of a recently developed numerical scheme to the computation of the flow in a curved duct. The flow situation is partially-parabolic in nature as there are significant elliptic effects, which are transmitted through the pressure field.

Numerical Computation of Flow in Rotating Ducts. Book chapter Full text. investigate the effect of a flow correction device (FCD) on the gas flow pattern, a perforated plate with 50% open area is placed at the inlet duct.

The different HRSG Inlet duct geometry taken for Numerical analysis for case 1, case 2 and case 3 are shown as Figure 1, Figure 2 and Figure 3 respectively. Table Inlet conditions of the exhaust gas. Numerical Analysis of the Exhaust Gas Flow and Heat Transfer in a Close-Coupled Catalytic Converter System During Warm-Up A new multidimensional calculation method has been developed to simulate the warm-up characteristics of close-coupled catalytic converter by: 5.

Based on Bernoulli law, a average flow meter for short duct is usually designed with a rectifying grille, a series of sectional distributed pressure points and a large pressure-averaging vessel. As rectification is one of the key characteristics of this method, the effect of grille on rectifying is numerically simulated.

The predicted results show that the grille in the mm×mm section is Author: Yong Gang Zhao, Bao Min Sun, Zhi Qiang Liu, Ding Hua Yang, Qing Liang Guan, Rui Qing Zhang.

Numerical studies of gas-hydrodynamic processes in a perforated exhaust duct are carried out. The distributions of velocity and temperature fields are obtained for different design of exhaust duct.

The thermal effect of hot gas on the exhaust duct walls is by: 3. The Secondary flow in a curved duct of square cross-section, is investigated numerically using the spectral method. The walls of the duct except the outer wall rotate around the centre of curvature and an azimuthal pressure gradient is imposed.

Multiple solutions are obtained at the same flow condition. It is also found that the secondary flow in a cross-section consists of two-vortex, four Cited by: 1.

numerical solution of compressible flow in a converging-diverging nozzle with friction Fanno and Rayleigh tables available in any standard text book [4].

Cases 1 through 3 are for constant area ducts and cases 4 and 5 are for variable area ducts (nozzle flow). Cited by: 2. A Numerical Analysis of Flow Development Through a Constant Area S-Duct A. Biswas1, Ashoke K. Raman1 A. Mullick1+ and B. Majumdar2 1National Institute of Technology, DurgapurWest Bengal, India 2Jadavpur University, Kolkata, West Bengal, India Abstract.

This paper presents the results of an experimental work with measurement of mean velocity. Computation of Fan Noise Radiation through A Realistic Engine Exhaust Geometry with Flow Conference Paper May with 6 Reads How we measure 'reads'.

6th BETA CAE International Conference. NUMERICAL SIMULATIONS OF FLOW THROUGH. S-DUCT. 1Pravin Peddiraju, 1Arthur Papadopoulos, 2Vangelis Skaperdas, 3Linda Hedges.

1BETA CAE Systems USA, Inc., USA, 2BETA CAE Systems SA, Greece, 3CFD Consultant, USA. KEYWORDS – S-Duct, CFD, Propulsion, Aerodynamics. ABSTRACT – Diffusing S-Ducts are critical components in. Steady Isentropic Flow – Control Volume Analysis Applications where the assumptions of steady, uniform, isentropic flow are reasonable: 1.

Exhaust gasses passing through the blades of a turbine. Diffuser near the front of a jet engine 3. Nozzles on a rocket engine 4. A broken natural gas lineFile Size: 84KB. Numerical Investigation of flow through Annular Diffusing Duct P.

Sinha1, 2, B. Majumdar3 Abstract-- In the present investigation the distribution of mean velocity, static pressure and total pressure are experimentally studied on an annular curved diffuser of ° angle of turn with an area ratio of at Reynolds number.

Download Citation | Computation of conduction and duct flow heat transfer | The primary purpose of this book is to introduce the science and the art of numerical computation of physical phenomena. Numerical simulation of gas-solid flow in ducts by CFD techniques R.

Decker1, D. Noriler2, H. Meier2 & M. Mori1 1Chemical Process Department, State University of Campinas, Brazil 2Chemical Engineering Department, Regional University of Blumenau, Brazil Abstract Numerical models are nowadays used on a large scale for the simulation of.

Modern computers can now study the dynamics in great detail and these simulations yield unprecedented insight. This book provides a comprehensive introduction to direct numerical simulations of multiphase flows for researchers and graduate students.

After a brief overview of the context and history the authors review the governing by: EVALUATION OF AN EXHAUST GAS MIXING DUCT FOR OFF-ROAD DIESEL AFTER-TREATMENT SYSTEMS USING NUMERICAL METHODS Henry Pong Master of Applied Science Department of Mechanical & Industrial Engineering University of Toronto Due to strong motivation to reduce costs and increase performances of stationaryAuthor: Henry Pong.

constant frequency that is transported through the duct system. Besides this, flow induced noise is caused by obstacles within the ducts. Despite the relatively low noise level of HVAC systems, it is annoying and due to the growing customers demand as well as legal requirement it should be considered by the designers.

Numerical Investigation of flow through Annular diffusing duct International Journal of Mechanical & Industrial Engineering, Volume-1 Issue-1, 61 the inlet boundary layer. Reichert and Wendt [5] experimentally studied the effect of vortex on the flow field of a.

Natural Gas as combustion fuel is injected out through the active runner gas pipe and this pipe inlet is selected as ‘Mass flow Inlet’. The fuel injection hole in the gas pipe is selected as ‘Interior’. The Gas turbine Exhaust flowing around the natural gas burners is selected as ‘Velocity Inlet’ at.

The turbulent fluid flow through sudden expansion duct studies raise the knowledge of scientific and contribute many practical applications.

The sudden change in the surface geometry of the duct cause the severe pressure gradient, the boundary layer separates at the step edge and forms a recirculation zone.Numerical Studies of Flow and Associated Losses in the Exhaust Port of a Diesel Engine Yue WangKTHMechanics SEStockholm,Sweden Abstract In the last decades, the focus of internal combustion engine development has moved towards more.

This work is devoted to the numerical analysis of small flow disturbances, i.e. velocity and pressure deviations from the steady state, in ducts of constant cross sections.

The main emphasis is put on the disturbances causing the most kinetic energy density growth, the so-called optimal disturbances, whose knowledge is important in laminar-turbulent transition and robust flow control Cited by: 7.