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- Sabcho Dimitrov, Lawrence K Low, +7 authors Ovanes G. Mekenyan
- International journal of toxicology
- 2005

A quantitative structure-activity relationship (QSAR) system for estimating skin sensitization potency has been developed that incorporates skin metabolism and considers the potential of parent… (More)

We report measurements of the Nusselt number, Nu, in turbulent thermal convection in a cylindrical container of aspect ratio 4. The highest Rayleigh number achieved was Ra=2× 10. Except for the last… (More)

Fluid turbulence is a paradigm for non-linear systems with many degrees of freedom and important in numerous applications. Because the analytical understanding of the equations of motion is poor,… (More)

– At least up to Rayleigh numbers of the order 10, a feature of turbulent convection in confined containers is a self-organized and coherent large-scale motion (“mean wind”). For aspect ratio unity,… (More)

- Katepalli R. Sreenivasan, A. D. Bershadskii, Jay Niemela
- Physical review. E, Statistical, nonlinear, and…
- 2002

Properties of the mean wind in thermal convection, especially the abrupt reversal of its direction at high Rayleigh numbers, are studied. Measurements made in a closed cylindrical container of aspect… (More)

- Sabcho Dimitrov, Gergana Dimitrova, +4 authors Ovanes Mekenyan
- Journal of Chemical Information and Modeling
- 2005

A stepwise approach for determining the model applicability domain is proposed. Four stages are applied to account for the diversity and complexity of the current SAR/QSAR models, reflecting their… (More)

- Rudolph C. Hwa, C. B. Yang, S Bershadskii, Jay Niemela, Katepalli R. Sreenivasan
- Physical review. E, Statistical, nonlinear, and…
- 2005

The irregular reversals of wind direction in convective turbulence are found to have fluctuating intervals that can be related, under certain circumstances, to critical behavior. In particular, by… (More)

- A. D. Bershadskii, Jay Niemela, Alexander Praskovsky, Katepalli R. Sreenivasan
- Physical review. E, Statistical, nonlinear, and…
- 2004

Temperature time traces are obtained in turbulent thermal convection at high Rayleigh numbers. Measurements are made in the midplane of the apparatus, near the sidewall but outside the boundary… (More)

- Ladislav Skrbek, Jay Niemela, Robert J. Donnelly
- Physical review letters
- 2000

Attenuation of second sound in helium II has been used to observe up to 6 orders of magnitude of decaying vorticity displaying four distinctly different regimes of decaying grid turbulence in a… (More)

- Neda Foroozani, Jay Niemela, Vincent A. Armenio, Katepalli R. Sreenivasan
- Physical review. E
- 2017

Large-eddy simulations of turbulent Rayleigh-Bénard convection were conducted for a fluid of Prandtl number Pr=0.7 confined in a cube, for Rayleigh numbers of 10^{6} and 10^{8}. The model solves the… (More)