The Calculation of Two-Dimensional Turbulent Recirculating Flows

Gosman, A. D.; Khalil, Essam E.; Whitelaw, J. H.

doi:10.1007/978-3-642-46395-2_18

Cited by 78 publications

(52 citation statements)

References 13 publications

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“…In order to obtain the finite difference forms of the gas field governing equations which are based on the Eulerian approach, the TEACH code [23], which had been used to model the spray combustion by Choi and Baek [24], is modified. Also, the well-known SIMPLE (semi-implicit method for pressure-linked equations) algorithm [25] is applied to solve these equations.…”

Section: Methodsmentioning

confidence: 99%

Numerical modelling of unsteady spray behaviour in moderately high-pressure regime

Wang

Baek

2007

Combustion Theory and Modelling

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The present study is mainly motivated to develop an unsteady computational code that simulates a transient behaviour of the spray injected into a moderately high-pressure environment. The moderately high-pressure regime is introduced to minimize some of the complexities that arise from considering the high pressure. In order to represent the spray development, the DDM (discrete droplet model), which is often identified as the PSIC (particle-source-in-cell) model, is employed among the SF (separate flow) models. Here, the Eulerian-Lagrangian formulation is used to analyse the two-phase interactions. For an accurate prediction of droplet evaporation rate in a high-pressure environment, a proper highpressure evaporation model is applied using thermodynamic and phase equilibrium conditions. Also, the effects of high pressure as well as high temperature are considered in the calculation of liquid and gas properties. Throughout the numerical simulation, a transient thermo-fluid mechanical behaviour of spray in a high-pressure environment is traced and visualized while its physical meaning is discussed in comparison with the case for normal pressure. Regarding the evaporation of spray, the effect of interactions between droplets is examined in comparison with the case for single droplet.

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Section: Methodsmentioning

confidence: 99%

Numerical modelling of unsteady spray behaviour in moderately high-pressure regime

Wang

Baek

2007

Combustion Theory and Modelling

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“…Consequently, the resultant velocity parallel to the wall in question and at a distance y 1 (where y + ≤30) from it corresponding to the first grid node was assumed to be represented by the law of the wall equations [14], i.e. :…”

Section: Mathematical Modelingmentioning

confidence: 99%

Entropy Analysis in Pipe Flow Subjected to External Heating

Al-Zaharnah

2003

Entropy

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In the present study, heat transfer and entropy analysis for flow through a pipe system is considered. The Reynolds number and the pipe wall temperature effects on entropy distribution and total entropy generation in the pipe are investigated. Numerical scheme employing a control volume approach is introduced when solving the governing equations. Steel is selected as pipe material, while water is used as fluid. It is found that increasing pipe wall temperature and Reynolds number increases the entropy production rate, in which case, entropy generation due to heat transfer dominates over that corresponding to fluid friction.

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“…The set of governing equations for the parabolic method are conservation of mass, the axial Navier-Stokes equation ( 1 (.L ( r pu ) + _L ( r pv) ) = 0 r ax ar ( 1) Axial Momentum: terms appearing in these equations will be defined once the finite difference form of these equations has been developed.…”

Section: Differential Equationsmentioning

confidence: 99%

“…The source term necessary to modify the near wall turbulent kinetic energy equation follows (9) The calculations of this expression may be broken into and T is calculated from Equation 17 and u+ is calculated from …”

Section: Finite Difference Equationsmentioning

confidence: 99%