A Pressure-Correction Method for Incompressible Flows Using Unstructured Meshes

Tsui, Yeng-Yung; Pan, Yeng Feng

doi:10.1080/10407790500344084

Cited by 53 publications

(40 citation statements)

References 27 publications

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“…Calculate quantities related to physical boundaries I, K + , K À and f given in Eqs. (14), (15), (17), and (38).…”

Section: Solution Proceduresmentioning

confidence: 99%

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A distance-function-based Cartesian (DIFCA) grid method for irregular geometries

Chai

Yap

2008

International Journal of Heat and Mass Transfer

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“…Calculate quantities related to physical boundaries I, K + , K À and f given in Eqs. (14), (15), (17), and (38).…”

Section: Solution Proceduresmentioning

confidence: 99%

“…Unstructured mesh procedures have been used to model irregular geometries [11][12][13][14][15][16][17][18]. Significant advances have been made over the past decades on the development of accurate and efficient solution procedures for the abovementioned mesh systems.…”

Section: Introductionmentioning

confidence: 99%

A distance-function-based Cartesian (DIFCA) grid method for irregular geometries

Chai

Yap

2008

International Journal of Heat and Mass Transfer

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“…In the above study, the in-cylinder flow results using the collocated version are compared with those using the staggered version. The collocation of pressure and velocity can cause unphysical pressure oscillations [42], but this problem is eliminated by using a pressure correction method [43].…”

Section: Base Cfd Code With Amr Algorithmmentioning

confidence: 99%

“…This difference can be explained using the in-cylinder flow field. The air intake through the intake valves 43 and the motion of the piston creates swirl and tumble inside the cylinder. The swirl creates circulating currents perpendicular to the piston surface and the tumble creates circulating currents perpendicular to swirl.…”

Section: Casementioning

confidence: 99%

Numerical study on mixture formation characteristics in a direct-injection hydrogen engine

Sukumaran

Kong

2010

International Journal of Hydrogen Energy

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“…In such studies, commercial codes are most often utilized. A computational method, based on the fully conservative finite volume method and the unstructured grid technology, had been developed by the group of the authors (Tsui and Pan, 2006). It is efficient and robust in dealing with flows with complex domain geometry.…”

Section: Introductionmentioning

confidence: 99%

Flow Characteristics in Mixers Agitated by Helical Ribbon Blade Impeller

Tsui¹,

2011

Engineering Applications of Computational Fluid Mechanics

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ABSTRACT:The main concern of this study is to investigate the flow mixing generated by helical ribbon blade impellers and to show that with the help of CFD the performance of the mixing system can be significantly improved by optimizing the geometric configuration of the impeller. To fulfill this objective, a numerical model is developed to solve the Navier-Stokes equations for the flow field. However, difficulties arise due to the rotation of the impeller in the vessel. In order to ease the problem, the velocity field is assumed to be in a quasi-steady state and the multiframe of reference is adopted to tackle the rotation of the impeller. For discretization the fully conservative finite volume method, together with unstructured grid technology, is incorporated. It is shown that the flow in the mixer can be regarded as a flow in an open channel with a wall moving at an angle with respect to the channel. The influences of the blade pitch, the blade width, and the clearance gap between the blade and the surrounding wall are examined. The mechanism to cause these effects is delineated in detail. It is demonstrated that after optimization of the blade geometry, the circulating flow rate induced by the impeller is largely increased, leading to significant reduction in mixing time. In addition, the power demand is reduced. It is also evidenced that by enlarging the clearance, it is difficult for the fluid in this region to be mixed.

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A Pressure-Correction Method for Incompressible Flows Using Unstructured Meshes

Cited by 53 publications

References 27 publications

A distance-function-based Cartesian (DIFCA) grid method for irregular geometries

A distance-function-based Cartesian (DIFCA) grid method for irregular geometries

Numerical study on mixture formation characteristics in a direct-injection hydrogen engine

Flow Characteristics in Mixers Agitated by Helical Ribbon Blade Impeller

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