Log in

Relevant bibliographies by topics / Turbulence. Vortex-motion. Heat

Contents

Journal articles
Dissertations / Theses
Books
Conference papers

Academic literature on the topic 'Turbulence. Vortex-motion. Heat'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Turbulence. Vortex-motion. Heat.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Turbulence. Vortex-motion. Heat"

1

Donnelly, Russell J., and Charles E. Swanson. "Quantum turbulence." Journal of Fluid Mechanics 173 (December 1986): 387–429. http://dx.doi.org/10.1017/s0022112086001210.

Full text

Abstract:

We present a review of quantum turbulence, that is, the turbulent motion of quantized vortex lines in superfluid helium. Our discussion concentrates on the turbulence produced by steady, uniform heat flow in a pipe, but touches on other turbulent flows as well. We have attempted to motivate the study of quantum turbulence and discuss briefly its connection with classical turbulence. We include background on the two-fluid model and mutual friction theory, examples of modern experimental techniques, and a brief survey of the phenomenology. We discuss the important recent insights that vortex dyn

APA, Harvard, Vancouver, ISO, and other styles

2

Akcayoglu, Azize, and Celal Nazli. "Thermal enhancement of triangular fins based on spanwise distance of vortex generators." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 13 (2016): 2554–66. http://dx.doi.org/10.1177/0954406216636917.

Full text

Abstract:

In this study, the influence of spanwise positions of vortex generators on the fin performance is determined numerically by considering global and local flow and heat transfer fields. The vortex generators are located on the inclined surfaces of equilateral triangular fins and the spanwise distances between them are altered as much as possible depending on the extents of the triangular duct. “RNG k-ɛ” turbulence model with “Enhanced wall treatment” option is determined as the best turbulence model to predict the flow fields inside the triangular fins with built-in vortex generators, for Reynol

APA, Harvard, Vancouver, ISO, and other styles

3

Kondaraju, S., and J. S. Lee. "Hybrid turbulence simulation of spray impingement cooling: The effect of vortex motion on turbulent heat flux." International Journal for Numerical Methods in Fluids 59, no. 6 (2009): 657–76. http://dx.doi.org/10.1002/fld.1828.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Yariz, V., V. Nikolsky, E. Gnatko, et al. "Study of the motion of incompressible gas in a vortex heat generator." Computer Modeling: Analysis, Control, Optimization 8, no. 2 (2020): 75–81. http://dx.doi.org/10.32434/2521-6406-2020-8-2-75-81.

Full text

Abstract:

The article presents the results of the performed analytical and experimental studies of the hydrodynamics of the translationalrotational motion of a viscous incompressible gas flow in the working space of a vortex heat generator of variable geometry, analytically determined the dependences of the effect of device performance, confuser opening angles, confuser channel width on the hydrodynamic parameters of the device and, as a consequence, its energy efficiency. The degree of energy efficiency of the swirler screw for the operation of a vortex heat generator at various loads on the working pa

APA, Harvard, Vancouver, ISO, and other styles

5

Wang, Ting, and Matthew C. Rice. "Effect of Elevated Free-Stream Turbulence on Transitional Flow Heat Transfer Over Dual-Scaled Rough Surfaces." Journal of Heat Transfer 127, no. 4 (2005): 393–403. http://dx.doi.org/10.1115/1.1861920.

Full text

Abstract:

The surface roughness over a serviced turbine airfoil is usually multiscaled with varying features that are difficult to be universally characterized. However, it was previously discovered in low free-stream turbulence conditions that the height of larger roughness produces separation and vortex shedding, which trigger early transition and exert a dominant effect on flow pattern and heat transfer. The geometry of the roughness and smaller roughness scales played secondary roles. This paper extends the previous study to elevated turbulence conditions with free-stream turbulence intensity rangin

APA, Harvard, Vancouver, ISO, and other styles

6

Aw Lin, Chou, Fatimah Al-Zahrah Mohd Sa’at, Fadhilah Shikh Anuar, Mohamad Firdaus Sukri, Mohd Zaid Akop, and Zainuddin Abdul Manan. "Heat Transfer Across Tube Banks With a Passive Control Vortex Generator in Steady One-Directional and Oscillatory Flows." CFD Letters 13, no. 1 (2021): 1–18. http://dx.doi.org/10.37934/cfdl.13.1.118.

Full text

Abstract:

Fluid can flow in one-directional (normal flow) or oscillatory conditions. Fluid flow in some energy system involved oscillatory flow condition. The use of vortex generator has been proven to improve heat transfer in the case of one-directional flow but the impact of vortex generator in oscillatory flow condition is yet unknown. This study focusses on the heat transfer performance across a heated tube banks using a Computational Fluid Dynamics (CFD) model. Two flow conditions were modelled: steady one-directional and oscillatory flow conditions. Two-dimensional CFD models of steady flow and os

APA, Harvard, Vancouver, ISO, and other styles

7

Lin, W. L., and T. F. Lin. "Observation and Computation of Vortex and/or Reverse Flow Development in Mixed Convection of Air in a Slightly Inclined Rectangular Duct." Journal of Heat Transfer 119, no. 4 (1997): 691–99. http://dx.doi.org/10.1115/1.2824173.

Full text

Abstract:

Combined flow visualization and conjugated numerical heat transfer analysis were carried out to study the axial evolution of the buoyancy induced secondary vortex and reverse flow in a mixed convective air flow through a bottom heated, slightly inclined rectangular duct. Results were obtained for the Grashof number Gr ranging from 1.6 × 103 to 2.8 × 105, inclined angle φ from −20 deg to 26 deg and the Reynolds number Re below 102 covering the steady and time dependent flows. For the buoyancy-opposing case, at a certain critical buoyancy-to-inertia ratio depending on the Re and φ both the exper

APA, Harvard, Vancouver, ISO, and other styles

8

Antonia, R. A., L. W. B. Browne, D. K. Bisset, and L. Fulachier. "A description of the organized motion in the turbulent far wake of a cylinder at low Reynolds number." Journal of Fluid Mechanics 184 (November 1987): 423–44. http://dx.doi.org/10.1017/s0022112087002957.

Full text

Abstract:

The topology of the organized motion has been obtained in the slightly heated self-preserving far wake of a circular cylinder at a Reynolds number, based on the cylinder diameter, of about 1200. In a frame of reference moving with the organized motion, the toplogy in the plane of main shear reduces to a succession of centres and saddles, located at about the wake half-width. Centres are identifiable by large values of spanwise vorticity associated with the coherent large-scale motion. Saddles occur at the intersection of converging and diverging separatrices, the latter being identifiable with

APA, Harvard, Vancouver, ISO, and other styles

9

Kim, Youngwoo, Chanhee Moon, Omid Nematollahi, Hyun Dong Kim, and Kyung Chun Kim. "Time-Resolved PIV Measurements and Turbulence Characteristics of Flow Inside an Open-Cell Metal Foam." Materials 14, no. 13 (2021): 3566. http://dx.doi.org/10.3390/ma14133566.

Full text

Abstract:

Open-cell metal foams are porous medium for thermo-fluidic systems. However, their complex geometry makes it difficult to perform time-resolved (TR) measurements inside them. In this study, a TR particle image velocimetry (PIV) method is introduced for use inside open-cell metal foam structures. Stereolithography 3D printing methods and conventional post-processing methods cannot be applied to metal foam structures; therefore, PolyJet 3D printing and post-processing methods were employed to fabricate a transparent metal foam replica. The key to obtaining acceptable transparency in this method

APA, Harvard, Vancouver, ISO, and other styles

10

Houze, Robert A., Wen-Chau Lee, and Michael M. Bell. "Convective Contribution to the Genesis of Hurricane Ophelia (2005)." Monthly Weather Review 137, no. 9 (2009): 2778–800. http://dx.doi.org/10.1175/2009mwr2727.1.

Full text

Abstract:

Abstract The convection occurring in the tropical depression that became Hurricane Ophelia (2005) was investigated just prior to tropical storm formation. Doppler radar showed a deep, wide, intense convective cell of a type that has been previously thought to occur in intensifying tropical depressions but has not heretofore been documented in detail. The updraft of the cell was 10 km wide, 17 km deep, had updrafts of 10–20 m s−1 throughout its mid- to upper levels, and contained a cyclonic vorticity maximum. The massive convective updraft was maintained by strong positive buoyancy, which was m

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Turbulence. Vortex-motion. Heat"

1

Swisher, Stacey Elaine. "Time-resolved heat flux measurements of the turbulent junction vortex system." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-10312009-020052/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Praisner, Thomas J. "Investigation of turbulent juncture flow endwall heat transfer and flow field /." Diss., 1998. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:9831809.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Turbulence. Vortex-motion. Heat"

1

1932-, Fiebig Martin, Mitra Nimai K, and Deutsche Forschungsgemeinschaft, eds. Vortices and heat transfer: Results of a DFG-supported research group. Vieweg, 1998.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Turbulence. Vortex-motion. Heat"

1

Wang, Ting, and Matthew C. Rice. "Effect of Elevated Free-Stream Turbulence on Transitional Heat Transfer Over Dual-Scaled Rough Surfaces." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38835.

Full text

Abstract:

The surface roughness over a serviced turbine airfoil is usually multi-scaled with varying features that are difficult to be universally characterized. However, it was previously discovered in low freestream turbulence conditions that the height of larger roughness produces separation and vortex shedding, which trigger early transition and exert a dominant effect on flow pattern and heat transfer. The geometry of the roughness and smaller roughness scales played secondary roles. This paper extends the previous study to elevated turbulence conditions with free-stream turbulence intensity rangin

APA, Harvard, Vancouver, ISO, and other styles

2

Sugioka, Hideaki, Zaiguo Fu, Takahiro Tsukahara, and Yasuo Kawaguchi. "PIV-PLIF Experiment on Modification of Turbulent Scalar Diffusion Near the Wall by Uniform Blowing." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-25431.

Full text

Abstract:

The transfer phenomena of wall turbulence are associated with the quasi ordered vortex structures, which are developed from small scale vortices near the wall. How to change the turbulent motion and turbulent transfer by modifying the condition of near wall is important for academic and industrial applications in the control of mass and heat transfers. In this study, we examined experimentally the effect on changing mass transfer in channel turbulence by uniform blowing from a porous wall. We used PIV/PLIF simultaneous measurement by mixing fluorescent dye into blown fluids to observe the spat

APA, Harvard, Vancouver, ISO, and other styles

3

Ghosh, Kalyanjit, and R. J. Goldstein. "Effect of Inlet Skew on Heat/Mass Transfer From a Simulated Turbine Blade." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46543.

Full text

Abstract:

Heat (mass) transfer experiments are conducted to study the effect of an inlet skew on a simulated gas-turbine blade placed in a linear cascade. The inlet skew simulates the relative motion between rotor and stator endwalls in a single turbine stage. The transverse motion of a belt, placed parallel to and upstream of the turbine cascade, generates the inlet skew. With the freestream velocity constant at approximately 16 m/sec, which results in a Reynolds number (based on the blade chord length of 0.184 m) of 1.8 × 105, a parametric study was conducted for three belt-to-freestream velocity rati

APA, Harvard, Vancouver, ISO, and other styles

4

Gallegos, Ralph Kristoffer B., and Rajnish N. Sharma. "Flow Characteristics of a Narrow Rectangular Channel Equipped With a Flapping Flag." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70291.

Full text

Abstract:

Recently, the use of flapping plates or ‘flags’ as vortex generators has gained attention for its potential application in heat transfer enhancement in channels. The motion of the flag generates additional turbulence which leads to enhanced heat transfer. However, very few reports deal with the turbulence characteristics inside a channel with flag vortex generators. This paper presents some flow turbulence properties experimentally measured behind a flapping flag. Using multi-hole pressure (cobra) probes, the flow properties behind a flag (M* = 0.42) were measured in a rectangular channel (asp

APA, Harvard, Vancouver, ISO, and other styles

5

Godfrey, Aaron H., Robert E. Spall, and Byard D. Wood. "Computational Fluid Dynamics Analysis of Vertical Mixing in Algae Biofuel Raceways Through the Addition of Delta Wings at Angle-of-Incidence." In ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/fedsm2012-72126.

Full text

Abstract:

CFD calculations of experimental algae raceways under consideration for biofuel production studies were performed in an effort to assess the effectiveness of delta wing vortex formation as a means of enhancing vertical mixing. The impact of delta wings on the level of turbulence dissipation rate in these raceways was also investigated. All simulations were completed at a constant level of power input into the raceway. Velocity profiles as well as characteristic mixing times were used to analyze and quantify the vertical mixing both with and without delta wings. The velocity profiles and turbul

APA, Harvard, Vancouver, ISO, and other styles

6

Elfert, M., M. P. Jarius, and B. Weigand. "Detailed Flow Investigation Using PIV in a Typical Turbine Cooling Geometry With Ribbed Walls." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53566.

Full text

Abstract:

In a stationary two-pass coolant channel system the fluid flow is investigated experimentally using the PIV (Particle Image Velocimetry). The cooling system consists of a trapezoidal leading edge channel, a 180 deg. bend and an almost rectangular second channel. The cross sections of the channels were adapted to the shape of a typical turbine blade. It has ribbed walls in both channels to enhance heat transfer performance. Ribs are placed at the top and bottom walls of the channels. The system was analyzed at the German Aerospace Center (DLR) with a small scaled model and at the Institute of A

APA, Harvard, Vancouver, ISO, and other styles

7

Ye, Lin, Cun-liang Liu, Hai-yong Liu, Hui-ren Zhu, and Jian-xia Luo. "Investigations on the Influence of Rib Orientation Angle on Film Cooling Performance of Compound Holes." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75794.

Full text

Abstract:

To investigate the effects of the inclined ribs on internal flow structure in film hole and the film cooling performance on outer surface, experimental and numerical studies are conducted on the effects of rib orientation angle on film cooling of compound cylindrical holes. Three coolant channel cases, including two ribbed cross-flow channels (135° and 45° angled ribs) and the plenum case, are studied under three blowing ratios (0.5, 1.0 and 2.0). 2D contours of film cooling effectiveness as well as heat transfer coefficient were measured by transient liquid crystal measurement technique (TLC)

APA, Harvard, Vancouver, ISO, and other styles

8

Elfert, M., M. Voges, and J. Klinner. "Detailed Flow Investigation Using PIV in a Rotating Square-Sectioned Two-Pass Cooling System With Ribbed Walls." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-51183.

Full text

Abstract:

In a 2-pass cooling system the pressure driven air flow distribution is investigated experimentally using the non-intrusive PIV Technique. The generic model as part of a complex and sophisticated cooling system consists of two square-sectioned ducts with a length of 20 diameters and an inherent 180 degree bend. The system has been investigated basically with smooth walls (case 0) and, later on, with two different kinds of ribbed walls in both legs. Ribs are applied to enhance the cooling performance; they are placed on two opposite walls of both legs in a symmetric (case A) and an asymmetric m

APA, Harvard, Vancouver, ISO, and other styles

9

Sabatino, D. R., and C. R. Smith. "Boundary Layer Influence on the Unsteady Horseshoe Vortex Flow and Surface Heat Transfer." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27633.

Full text

Abstract:

The spatial-temporal flow-field and associated surface heat transfer within the leading edge, end-wall region of a bluff body were examined using both particle image velocimetry and thermochromic liquid crystal temperature measurements. The horseshoe vortex system in the end-wall region is mechanistically linked to the upstream boundary layer unsteadiness. Hairpin vortex packets, associated with turbulent boundary layer bursting behavior, amalgamate with the horseshoe vortex resulting in unsteady strengthening and streamwise motion. The horseshoe vortex unsteadiness exhibits two different natu

APA, Harvard, Vancouver, ISO, and other styles

10

Sugisaki, Daisuke, Masahiro Motosuke, and Shinji Honami. "Heat Transfer and Flow Characteristics Due to Interaction of Longitudinal Vortices by Vortex Generator Array." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-28189.

Full text

Abstract:

This paper describes the turbulent heat transfer and the flow characteristics of the longitudinal vortices downstream of vortex generator array on the flat surface. Understanding on the heat transfer and flow characteristics is strongly required from the viewpoint of the heat transfer enhancement in an actual turbine blade design. The experiment was conducted in the test section of the wind tunnel which had a rectangular cross section and length of 2000mm. The reference velocity at the test section was 16 m/s and Reynolds number based on the momentum thickness was 1670. An array of the vortex

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!