Results 1 to 10 of about 914,603 (402)

A stability condition for turbulence model: From EMMS model to EMMS-based turbulence model [PDF]

, 2013
The closure problem of turbulence is still a challenging issue in turbulence modeling. In this work, a stability condition is used to close turbulence. Specifically, we regard single-phase flow as a mixture of turbulent and non-turbulent fluids, separating the structure of turbulence. Subsequently, according to the picture of the turbulent eddy cascade,
Li, Jinghai, Qiu, Xiaoping, Wang, Limin, Zhang, Lin   +3 more
arxiv   +3 more sources

Kolmogorov Spectrum of Quantum Turbulence [PDF]

J. Phys. Soc. Jpn 74, 3248 (2005), 2005
There is a growing interest in the relation between classical turbulence and quantum turbulence. Classical turbulence arises from complicated dynamics of eddies in a classical fluid. In contrast, quantum turbulence consists of a tangle of stable topological defects called quantized vortices, and thus quantum turbulence provides a simpler prototype of ...
Araki T., Batchelor G. K., Berloff N. G., Berloff N. G., Donnelly R. J., Frisch U., Gross E. P., Kida S., Kobayashi M., Kolmogorov A. N., Kolmogorov A. N., Koplik J., Leadbeater M., Maurer J., Nore C., Ogawa S., Pitaevskii L. P., Press W. H., Schwarz K. W., Stalp S. R., Tanaka M., Taylor G. I., Vinen W. F., Vinen W. F.   +23 more
arxiv   +3 more sources

Active Turbulence [PDF]

Annual Review of Condensed Matter Physics, 2021
Active fluids exhibit spontaneous flows with complex spatiotemporal structure, which have been observed in bacterial suspensions, sperm cells, cytoskeletal suspensions, self-propelled colloids, and cell tissues.
Ricard Alert, J. Casademunt, J. Joanny
semanticscholar   +5 more sources

Recent Developments in Understanding Two-dimensional Turbulence and the Nastrom-Gage Spectrum [PDF]

J. Low Temp. Phys. 145, 25-57, 2006
Two-dimensional turbulence appears to be a more formidable problem than three-dimensional turbulence despite the numerical advantage of working with one less dimension. In the present paper we review recent numerical investigations of the phenomenology of two-dimensional turbulence as well as recent theoretical breakthroughs by various leading ...
A. Polyakov, A. Polyakov, A. Wiin-Nielsen, C. Leith, C. Pasquero, C. Tran, C. Tran, C. Tran, D. Bernard, D. Lilly, D. Muraki, E. Dewan, E. Eady, E. Gkioulekas, E. Gkioulekas, E. Lindborg, E. Lindborg, E. Lindborg, E. Siggia, Eleftherios Gkioulekas, F. Waleffe, G. Batchelor, G. Batchelor, G. Boffetta, G. Eyink, G. Eyink, G. Eyink, G. Eyink, G. Falkovich, G. Falkovich, G. Falkovich, G. Falkovich, G. Falkovich, G. Falkovich, G. Falkovich, G. Nastrom, G. Nastrom, I. Arad, I. Held, I.M. Held, J. Bowman, J. Bowman, J. Bowman, J. Charney, J. Charney, J. Cho, J. Cho, J. Herring, J. Koshyk, J. Paret, J. Paret, J. Pedlosky, J. Yano, J.R. Holton, K. Gage, K. KoshykJ. Hamilton, K. Nam, K. Smith, K. Tung, K. Tung, K. Tung, K. Tung, Ka-Kit Tung, L. Biferale, L. Biferale, L. Smith, M. Chertkov, M. Lesieur, M. Rivera, P. Laval, P. Merilees, P. Rhines, P. Rhines, P. Saffman, P. Tabeling, Q. Chen, R. DiPerna, R. Fjørtøft, R. Kraichnan, R. Kraichnan, R. Kraichnan, R. Kraichnan, R. Salmon, R. Scott, R.T. Pierrehumbert, S. Danilov, S. Danilov, S. Danilov, S. Moiseev, S. Nazarenko, S. Sukoriansky, T. Bohr, T. Chen, T. Ishihira, T. VanZadt, U. Frisch, V. Borue, V. Borue, V. Lvov, V. L’vov, V. L’vov, V. L’vov, V. L’vov, V. L’vov, V. Yakhot, W. Blumen, W. Blumen, W. Skamarock, W. Welch, Y. Kaneda   +109 more
arxiv   +5 more sources

Numerical Simulation on the Scalar Transport in Rotating Channel Turbulence

气体物理, 2023
Passive scalar transport in channel turbulence with spanwise rotation is of relevance to many engineering applications. A systematical study on this problem was conducted based on direct numerical simulations. The Reynolds number defined by wall-friction
Yi-ning ZHANG, Yang CHEN, Qing-dong CAI, Yan-tao YANG   +3 more
doaj   +1 more source

Urban water supply systems’ resilience under earthquake scenario

Scientific Reports, 2022
Threats to water supply systems have increased in number and intensity. Natural disasters such as earthquakes have caused different types of damage to water distribution networks (WDN), particularly for those with aged infrastructure.
Mo’Tamad H. Bata, Rupp Carriveau, David S.-K. Ting   +2 more
doaj   +1 more source

Large-scale structures of wall-bounded turbulence in single- and two-phase flows: advancing understanding of the atmospheric surface layer during sandstorms

Flow, 2021
In recent years, observations of the atmospheric surface layer have greatly promoted research on high-Reynolds-number wall-bounded turbulence, especially observations of wind-blown sand flows/sandstorms, which are typical sand-laden two-phase flows ...
Hongyou Liu, Xiaojing Zheng
doaj   +1 more source

Hybrid Computation of the Aerodynamic Noise Radiated by the Wake of a Subsonic Cylinder

Fluids, 2023
The noise radiated by the flow around a cylinder in the subcritical regime at ReD=1×104 and at a subsonic Mach number of M=0.5 is here studied. The aerodynamic sound radiated by a cylinder has been studied with a wide range of Reynolds numbers, but there
Benet Eiximeno, Carlos Tur-Mongé, Oriol Lehmkuhl, Ivette Rodríguez   +3 more
doaj   +1 more source

Intercomparison of In Situ Sensors for Ground-Based Land Surface Temperature Measurements

Sensors, 2020
Land surface temperature (LST) is a key variable in the determination of land surface energy exchange processes from local to global scales. Accurate ground measurements of LST are necessary for a number of applications including validation of satellite ...
Praveena Krishnan, Tilden P. Meyers, Simon J. Hook, Mark Heuer, David Senn, Edward J. Dumas   +5 more
doaj   +1 more source

The energy- and flux budget theory for surface layers in atmospheric convective and stably stratified turbulence [PDF]

Physics of Fluids 34, 116602 (2022), 2021
The energy- and flux budget (EFB) turbulence closure theory for the atmospheric surface layers in convective and stably stratified turbulence has been developed using budget equations for turbulent energies and fluxes in the Boussinesq approximation. In the lower part of the surface layer in the atmospheric convective boundary layer (CBL), the rate of ...
arxiv   +1 more source