Turbulence modeling for flows around convex features giving rapid eddy distortion

Tucker, Paul G.; Liu, Y.

doi:10.1016/j.ijheatfluidflow.2007.04.020

Cited by 15 publications

(2 citation statements)

References 35 publications

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“…However, the validation of the CFD models could be case dependent in the engineering applications [12][13][14][15][16][17]. Moreover, the experimental studies were always carried out to validate the jet models or the CFD simulation results in the jet flow investigations.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation and modelling of a buoyant attached plane jet in a room

Cao¹,

Kurnitski²,

Ruponen³

et al. 2009

Applied Thermal Engineering

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Buoyant attached jets are widely used in various types of supply air devices especially in office buildings. This study focuses on a two-dimensional cooled attached jet characteristic, including mean flow field structure, specification of the jet regions and maximum velocity decay. A new superimposing model is derived to predict the maximum velocity decay and validated by measurement results. The measurement results demonstrate that the intermediate region of a buoyant jet does exist when an inner layer extends downstream of the jet slot. In addition, by assuming that the buoyant force is the main extra force on the jet flow in the acceleration process, the superimposing model predicted the maximum velocity decay with precise accuracy in a Reynolds number range of 667-4000, based on slot heights of 20 and 30 mm and slot velocities of 0.50, 1.00 and 2.00 m/s. At a distance of 1000 mm from the slot, the velocity profile displays a self similarity character like an isothermal turbulent jet. In the final region, where the buoyancy flux completely dominates the jet, the jet behaved like a plume with an unstable flow field.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation and modelling of a buoyant attached plane jet in a room

Cao¹,

Kurnitski²,

Ruponen³

et al. 2009

Applied Thermal Engineering

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“…Similar to many engineering flows around complex geometries, flow in turbomachinery exhibits complex physical and inherently unstable characteristics, including flow separation and turbulence [4]. As noted by Meneveau and Katz [5] and Rhie and Gleixner [6] the unsteady stresses resulting from the movement of the wakes will be typically of a similar or higher magnitude to the turbulent stresses. Suryavamshi et al [7] observe the root-mean-square of total pressure unsteadiness to be as high as 9.75% downstream of a compressor stator.…”

Section: Introductionmentioning

confidence: 98%

Development and Application of the Sliding Plane Method for Turbomachinery

Zhou,

Fu,

et al. 2024

J. Phys.: Conf. Ser.

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This study focuses on the development and application of the sliding plane method for turbomachinery. The implementation of sliding plane consists of two parts: (1) grid manipulation in pre-processor and (2) sliding mesh interpolation in solver. In pre-processor phase, mesh extrusion, donor-receptor search pairing, and geometric array updates algorithms are implemented. Based on the updated grid information in pre-processor phase, flux interpolation between pairwise sliding planes is developed for unsteady Raynolds-averaged simulation (RANS). To validate the performance of our sliding plane method, the comparative simulation with the mixing plane method on Transonic Compressor Darmstadt (TCD) at Technical University of Darmstadt (TUDa) case is conducted using both sliding boundary and hybrid boundary methods. Special concern is placed on the stall phenomena near the leading edge of the compressor under near-stall conditions. Numerical results show superior agreement with experimental data compared to the mixing plane results, affirming its effectiveness in simulating unsteady conditions.

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Introduction

Tucker

2014

Unsteady Computational Fluid Dynamics in Aeronautics

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Turbulence modeling for flows around convex features giving rapid eddy distortion

Cited by 15 publications

References 35 publications

Experimental investigation and modelling of a buoyant attached plane jet in a room

Experimental investigation and modelling of a buoyant attached plane jet in a room

Development and Application of the Sliding Plane Method for Turbomachinery

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