Influencing Engine Design Using Computational Fluid Dynamics

Shaw, Charles; Graysmith, J. L.; Richardson, Stephen H.

doi:10.4271/930877

Cited by 8 publications

(6 citation statements)

References 5 publications

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“…The finite volume method was used to discretise the governing partial differential equations. The discretisation was carried out with second order upwind scheme by which the unknown quantities at the cell faces are computed through a Taylor series expansion [35]. As a way of incorporating the effects of pressure into the solution for the momentum equation, the SIMPLE (Semi Implicit Pressure Linked Equations) algorithm [36] was used to couple the calculations of pressure and velocity [28], and Fluent [29] was used to obtain iterative solution of the equations.…”

Section: Numerical Techniquesmentioning

confidence: 99%

Numerical investigation of heat transfer and fluid flow of water through a circular tube induced with divers' tape inserts

Oni

Paul

2016

Applied Thermal Engineering

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An investigation was carried out to analyse numerically heat transfer and flow characteristics of water through a circular tube induced with different twisted tapes. The aim is to know which of the tube designs gives the best performance when compared with a plain tube. Turbulent flow was considered, the walls of the tubes were under uniform wall heat flux, Reynolds number was between 5000 and 20000, and RNG κ-ε model was selected for the simulations. The shape of cuts on the tapes has effects on the performance of the induced tubes. The tube fitted with alternate-axis triangular cut twisted tape has the best performance as its Nusselt number and friction factor are 1.63 -2.18 and 2.60 -3.15 times respectively that of the tube fitted with plain twisted tape while its thermal performance factor is 1.35 -1.43 times that of the tube with plain twisted tape. New correlations were developed for the Nusselt number and friction factors, and reveal that the Nusselt number obtained from the new correlation agrees well with the correlation proposed by Thianpong et al. with a discrepancy of 2.21%. For the friction factor, the discrepancy is 3.01%.

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Section: Numerical Techniquesmentioning

confidence: 99%

Numerical investigation of heat transfer and fluid flow of water through a circular tube induced with divers' tape inserts

Oni

Paul

2016

Applied Thermal Engineering

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“…The strategy of CFD is to replace the continuous problem domain with a discrete domain using a grid [30]. When the boundary and initial conditions that are specific to the flow problem being simulated have been applied, they can be solved using a variety of direct or iterative solution techniques producing a numerical simulation of the given flow problem [31].…”

Section: Numerical Model Descriptionmentioning

confidence: 99%

Improving the efficiency of ‘Clean-In-Place’ procedures using a four-lobed swirl pipe: A numerical investigation

Hall

Miles

et al. 2015

Computers & Fluids

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“…The work uses a surface roughness index to simulate the vegetation cover and does not model sediment transportation in this instance. Details on the form of the equations, turbulence model and associated wall function can be found in Shaw [10].…”

Section: Scope Of the Workmentioning

confidence: 99%

Three-dimensional flow simulation over a complex sand dune system

Wakes

Maegli

Dickinson

et al. 2008

WIT Transactions on the Built Environment

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Invasive, non-indigenous plants such as marram grass (Ammophila arenaria) have been used extensively in New Zealand to stabilise dune systems but this activity has resulted in a loss of indigenous biodiversity as well as significant changes in dune morphology. The restoration of natural dune systems has become a focus for some of the least modified coastal regions with associated concerns as to what effect marram grass eradication or other such interventions may have on dune stability.An ongoing project at Mason Bay, Stewart Island, New Zealand has examined all aspects of marram grass invasion and eradication. This paper concentrates on the initial three-dimensional CFD model that simulates the wind flow over this complex dune system compared with field data with detailed LIDAR data used to recreate the complex topography of the dune system. Various modelling options are assessed for their accuracy in emulating the field data. The topography was found to greatly affect the results, making it difficult to determine the actual wind flow pattern over such a complex system. The effectiveness of three-versus two-dimensional CFD modelling is therefore discussed in terms of accuracy, practicality and complexity and the feasibility for practical planning purposes is also explored.

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Influencing Engine Design Using Computational Fluid Dynamics

Cited by 8 publications

References 5 publications

Numerical investigation of heat transfer and fluid flow of water through a circular tube induced with divers' tape inserts

Numerical investigation of heat transfer and fluid flow of water through a circular tube induced with divers' tape inserts

Improving the efficiency of ‘Clean-In-Place’ procedures using a four-lobed swirl pipe: A numerical investigation

Three-dimensional flow simulation over a complex sand dune system

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