Experimental and Computational Investigation of the Hydrodynamics and Heat Transfer in a Flat Channel of Variable Width for Smooth and Intensified Surfaces

Banker, Rajiv D.; Belen'kii, M. Ya.; Gotovskii, M. A.; Исаев, С. А.; Fokin, B. S.

doi:10.1615/heattransres.v35.i12.50

Cited by 9 publications

(3 citation statements)

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“…A good agreement of the results of the numerical and physical modeling of convective heat transfer in a narrow channel with single spherical dimples of moderate [86] and average [87] depths (V.I. Terekhov's experiment, S.S. Kutateladze Institute of Thermophysics SB RAS) and in a channel with an in-line spherical dimple bundle [42] (M.A. Gotovsky's experiment, I. Polzunov Central Boiler and Turbine Institute) should also be mentioned.…”

Section: Introductionmentioning

confidence: 82%

“…Sapozhnikov et al, St. Petersburg Polytechnic University, as well as of G.I. Kiknadze et al), convective heat transfer in the plane-parallel and divergent channels with a set of spherical [51] and conical [42] dimples placed on a wall (the experiments of Chyu et al, as well as of Banker et al), and a supersonic axisymmetric flow around a tear-shaped body with a conical tapered flare [43] (A.N. Mikhalev's experiments, A.F.…”

Section: Introductionmentioning

confidence: 99%

“…The Menter 1993 SST model was tested in detail in references [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45], dealing with the calculations of 2D and 3D separated incompressible liquid and compressed gas flows. It was successfully tested for modeling turbulent recirculating flow in a square cavity with a movable cover (in comparison to other semi-empirical models) [31], a separated flow in a circular cavity on the walls of plane-parallel [32] and divergent [33] channels (S.V.…”

Section: Introductionmentioning

confidence: 99%

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Standard and Modified SST Models with the Consideration of the Streamline Curvature for Separated Flow Calculation in a Narrow Channel with a Conical Dimple on the Heated Wall

et al. 2021

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The testing of the standard and modified SST models of the transfer of shear stresses was carried out on an example of calculating the heat transfer with an intense detached flow around a conical dimple with a slope angle of 45° on the heated wall of a narrow channel. It was shown that the standard turbulence model by Menter SST (MSST) of 2003, widely used in the packages Fluent, CFX, StarCCM+, etc., significantly underestimated the intensity of the return flow. A correction of this model was presented that took into account the influence of the curvature of streamlines within the framework of the Rodi-Leshziner-Isaev (RLI) approach for spatial separated flows. It was found that the predictions for the RLI MSST 2003 were close to the predictions for the original standard MSST 1993, in which the eddy viscosity was calculated using the vorticity modulus. At the same time, the predictions based on the modified one, following Smirnov-Menter (SM) MSST 2003, included in the ANSYS model catalog did not differ too much from the standard MSST 2003. The preference of the MSST modified within the RLI 2003 for calculating the heat transfer in intense separated flows was substantiated.

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Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Standard and Modified SST Models with the Consideration of the Streamline Curvature for Separated Flow Calculation in a Narrow Channel with a Conical Dimple on the Heated Wall

et al. 2021

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Correction of the Shear-Stress-Transfer Model with Account of the Curvature of Streamlines in Calculating Separated Flows of an Incompressible Viscous Fluid

Исаев

Baranov²,

Zhukova

et al. 2014

J Eng Phys Thermophy

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The necessity of correcting differential semiempirical turbulence models to calculate circulating fl ows of an incompressible viscous fl uid is discussed. Approaches to taking account of the infl uence of the curvature of streamlines on turbulence characteristics arereviewed. Experience gained in modeling numerically twodimensional separated fl ows in a square and a cylindrical cavity on the wall of a plane-parallel channel is analyzed; an additional semiempirical constant in the expression for vortex viscosity of a modifi ed shear-stress-transfer model is substantiated.Introduction. The signifi cant difference in results of numerical modeling of circulating fl ow in the circular cavity on the wall of a rotating channel [1] from the corresponding data obtained with the Doppler laser velocimeter on the experimental setup in Southampton [2] increasingly draws attention to the idea of correction of semiempirical turbulence models used to close Reynolds-averaged Navier-Stokes equations [3] with account of the infl uence of the streamline curvature.In this connection, the present work seeks to analyze experience gained in modeling numerically separated fl ows with turbulence models, in particular, with the frequently used semiempirical turbulence model, i.e., the Mentershear-stresstransfer k-ω model (MSST) in the versions of the year 1993 (MSST1993) and of the year 2003 (MSST2003) [4, 5]. Also, the present work seeks to substantiate the semiempirical constant in the expression for vortex viscosity in the MSST 2003 version [5] using, as examples, the calculations of experimental analogs of separated fl ows of an incompressible viscous medium in a square and a cylindrical cavity on the wall of a plane-parallel channel.Historical Review of Investigations into the Correction of Semiempirical Turbulence Models with Account of the Infl uence of the Streamline Curvature. It is common knowledge that semiempirical models of closure of Reynoldsaveraged Navier-Stokes equations [3, 6] have been constructed for calculation of wall fl ows. In any event, calibration of the constants for them is based on measurements that have been performed on special test beds for model fl ows [7]. Turbulence models are not universal. Thus, the turbulent Prandtl number for the boundary layer is equal to 0.9, and for the jet fl ow, to 0.6 [8]. At the same time, in intricate wall fl ow, one cannot, in practice, single out jet fl ows and, in modeling them using package technologies, takes the turbulent Prandtl number as constant and equal to 0.9 [9]. Also, it should be noted that algebraic turbulent models for calculation of fl ows in curvilinear channels include curvature corrections in expressions for a turbulence scale [3]. Rotation corrections seem even more signifi cant as far as their infl uence, primarily, on velocity profi les is concerned [10].

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Energy saving in thermal energy systems using dimpled surface technology – A review on mechanisms and applications

et al. 2019

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Experimental and Computational Investigation of the Hydrodynamics and Heat Transfer in a Flat Channel of Variable Width for Smooth and Intensified Surfaces

Cited by 9 publications

References 0 publications

Standard and Modified SST Models with the Consideration of the Streamline Curvature for Separated Flow Calculation in a Narrow Channel with a Conical Dimple on the Heated Wall

Standard and Modified SST Models with the Consideration of the Streamline Curvature for Separated Flow Calculation in a Narrow Channel with a Conical Dimple on the Heated Wall

Correction of the Shear-Stress-Transfer Model with Account of the Curvature of Streamlines in Calculating Separated Flows of an Incompressible Viscous Fluid

Energy saving in thermal energy systems using dimpled surface technology – A review on mechanisms and applications

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