[图书][B] Physics of buoyant flows: from instabilities to turbulence

MK Verma - 2018 - World Scientific
Hydrodynamic flows exhibit turbulent behaviour which is not well understood till date. When
a fluid is in a gravitational field, the flow becomes even more complex due to the gravity …

Bifurcation analysis of the flow patterns in two-dimensional Rayleigh–Bénard convection

S Paul, MK Verma, P Wahi, SK Reddy… - International Journal of …, 2012 - World Scientific
We investigate the origin of various convective patterns for Prandtl number P= 6.8 (for water
at room temperature) using bifurcation diagrams that are constructed using direct numerical …

On the emergence of secondary tones in airfoil noise

A Sano, AVG Cavalieri, AFC da Silva… - Journal of Fluid …, 2023 - cambridge.org
We present the results of direct numerical simulations of a NACA 0012 airfoil, with Mach
number 0.3 and angle of attack of, indicating a route to chaos of the Ruelle–Takens …

[HTML][HTML] Multicellular states of viscoelastic thermovibrational convection in a square cavity

A Boaro, M Lappa - Physics of Fluids, 2021 - pubs.aip.org
The problem of pure thermovibrational flow in a two-dimensional square cavity containing a
viscoelastic liquid is investigated in the framework of a numerical approach based on the …

Numerical investigation of the nonlinear flow characteristics in an ultra-supercritical utility boiler furnace

M Yang, YY Shen, HT Xu, M Zhao, SW Shen… - Applied Thermal …, 2015 - Elsevier
The temperature deviation is an inherent issue in large-scale tangentially fired pulverized-
coal boilers. This article investigates numerically the forming mechanism of gas velocity and …

Coherent solutions and transition to turbulence in two-dimensional Rayleigh-Bénard convection

P Kooloth, D Sondak, LM Smith - Physical Review Fluids, 2021 - APS
For two-dimensional (2D) Rayleigh-Bénard convection, classes of unstable, steady solutions
were previously computed using numerical continuation [F. Waleffe, Phys. Fluids 27, 051702 …

Influence of Prandtl number on the chaos transition for pure natural and Rayleigh–Bénard convections inside a rectangular cavity

JH Oh, DG Kim, DH Kim, SA Aodu, IS Park - … Communications in Heat and …, 2024 - Elsevier
A peculiar flow instability known as multiple chaos transitions was recently reported for the
free convection in an enclosure where the direction of the temperature gradient changes …

Experimental, analytical, and computational study of natural convection in asymmetrically-heated vertical shafts

CS Ahn, BH Bang, C Park, DY Kim, AL Yarin… - International Journal of …, 2021 - Elsevier
During building fires, buoyant smoke is rapidly transported through elevator and ventilation
shafts, posing a threat to the safety of occupants on higher floors. Therefore, smoke …

Route to hyperchaos in Rayleigh-Bénard convection

R Chertovskih, EV Chimanski, EL Rempel - Europhysics Letters, 2015 - iopscience.iop.org
Transition to hyperchaotic regimes in Rayleigh-Bénard convection in a square periodicity
cell is studied by three-dimensional numerical simulations. By fixing the Prandtl number at …

Multiple solutions, oscillons, and strange attractors in thermoviscoelastic Marangoni convection

M Lappa, H Ferialdi - Physics of Fluids, 2018 - pubs.aip.org
Through numerical solution of the governing time-dependent and non-linear Navier-Stokes
equations cast in the framework of the Oldroyd-B model, the supercritical states of thermal …