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17 results on '"R. T. Lahey"'

4. An application of fractal and chaos theory in the field of two-phase flow & heat transfer

Author

R. T. Lahey

Subjects
Fluid Flow and Transfer Processes, Physics, Field (physics), General Engineering, Thermodynamics, Condensed Matter Physics, Chaos theory, Physics::Fluid Dynamics, Nonlinear system, Fractal, Boiling, Heat transfer, Attractor, Statistical physics, Poincaré map
Abstract

The essentials of the theory of fractals and chaos are reviewed and then applied to the problem of density-wave oscillations in a boiling channel. It is shown that these mathematical techniques give valuable new insight into nonlinear thermal-hydraulic oscillations.

Published
1991
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5. An analysis of onlinear instabilities in boiling systems

Author

R. T. Lahey, P. DiMarco, and A. Clausse

Subjects
Physics::Fluid Dynamics, Nonlinear system, Materials science, Mathematics::Probability, Boiling, General Engineering, Thermodynamics, Nonlinear Sciences::Pattern Formation and Solitons, Instability, Supercritical fluid, Communication channel
Abstract

This paper presents a nonlinear lumped-parameter analysis of density-wave and excursive instability phenomena in a boiling channel. The dynamics of the heated wall is also included. Both subcritical and supercritical bifurcations are detected, and the dynamics of the heated wall are found to be significant

Published
1991
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9. Low-Energy Nuclear Reactions and New Energy Technologies Sourcebook Volume 2

Author

Jan Marwan, Steven B. Krivit, Jean-Paul Biberian, Mahadeva Srinivasan, J. Dash, Q. Wang, D. S. Silver, Dennis Letts, Dennis Cravens, Peter L. Hagelstein, Andrei Lipson, Ivan Chernov, Alexei Roussetski, Yuri Cherdantsev, Aslan Tsivadze, Boris Lyakhov, Eugeny Saunin, Michael Melich, Pamela A. Mosier-Boss, Frank E. Gordon, Lawrence P.G. Forsley, R. P. Taleyarkhan, C. D. West, R. T. Lahey, R. I. Nigmatulin, R. C. Block, J. S. Cho, Y. Xu, Roger S. Stringham, Scott R. Chubb, Akito Takahashi, H. Hora, N. Ghahramani, G. H. Miley, M. Ghanaatian, M. Hooshmand, K. Philberth, F. Osman, George H. Miley, Heinrich Hora, Karl Philberth, A. Lipson, P.J. Shrestha, Y.N. Srivastava, A. Widom, L. Larsen, Jan Marwan, Steven B. Krivit, Jean-Paul Biberian, Mahadeva Srinivasan, J. Dash, Q. Wang, D. S. Silver, Dennis Letts, Dennis Cravens, Peter L. Hagelstein, Andrei Lipson, Ivan Chernov, Alexei Roussetski, Yuri Cherdantsev, Aslan Tsivadze, Boris Lyakhov, Eugeny Saunin, Michael Melich, Pamela A. Mosier-Boss, Frank E. Gordon, Lawrence P.G. Forsley, R. P. Taleyarkhan, C. D. West, R. T. Lahey, R. I. Nigmatulin, R. C. Block, J. S. Cho, Y. Xu, Roger S. Stringham, Scott R. Chubb, Akito Takahashi, H. Hora, N. Ghahramani, G. H. Miley, M. Ghanaatian, M. Hooshmand, K. Philberth, F. Osman, George H. Miley, Heinrich Hora, Karl Philberth, A. Lipson, P.J. Shrestha, Y.N. Srivastava, A. Widom, and L. Larsen

Subjects
Nuclear reactions, Cold fusion
Published
2009

11. The Prediction of Pressure Drop and CCFL Breakdown in Countercurrent Two-Phase Flow

Author

A. G. Ostrogorsky, R. R. Gay, and R. T. Lahey

Subjects
Pressure drop, Steady state, Materials science, Countercurrent exchange, Mechanical Engineering, Flow (psychology), Thermodynamics, Condensed Matter Physics, Physics::Fluid Dynamics, Heat flux, Mechanics of Materials, Flow coefficient, General Materials Science, Two-phase flow, Adiabatic process
Abstract

A steady-state analytical model has been developed to predict channel pressure drop as a function of inlet vapor flow rate and applied heat flux during conditions of countercurrent two-phase flow. The interfacial constitutive relations utilized are flow structure dependent and allow for the existence of either smooth or wavy liquid films. A computer code was developed to solve the analytical model. Predictions of Δp versus vapor flow rate were found to agree favorably with experimental data from adiabatic, air/water systems. In addition, the model was used to predict countercurrent flow conditions in heated channels characteristic of a BWR/4 nuclear reactor fuel assembly.

Published
1983
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12. Authors

Author

Leon C. Walters, B. R. Seidel, J. Howard Kittel, Anton Bayer, Joachim Ehrhardt, Mohammad R. Fakory, R. T. Lahey, Daniel Cubicciotti, Bal Raj Sehgal, Yi-Chiang Chang, Alexander Sesonske, George A. Jensen, A. M. Platt, George B. Mellinger, William J. Bjorklund, Habib Amin, K. C. Chiu, David W. James, Fumio Kawamura, Kiyomi Funabashi, Makoto Kikuchi, Katsumi Ohsumi, Yasushi Nomura, Takanori Shimooke, Tung-Tse Tseng, and William A. Jester

Subjects
Nuclear and High Energy Physics, Nuclear Energy and Engineering, Condensed Matter Physics
Published
1984
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13. Authors

Author

G. L. Cano, R. W. Ostensen, M. F. Young, A. M. Sokolovsky, M. Livolant, J. Gauvain, A. Hoffmann, M. Baines, S. J. Board, N. E. Buttery, R. W. Hall, S. R. Bierman, B. M. Durst, E. D. Clayton, B. W. Howes, Marilyn M. Osterhout, R. T. Lahey, P. S. Kamat, S. R. Speidel, W. H. Plettenberg, H. J. Sutherland, J. E. Smaardyk, L. A. Kent, Dong H. Nguyen, G. W. Hollenberg, J. L. Jackson, J. A. Basmajian, David W. Varela, William E. Kastenberg, Vijay K. Dhir, P. Wydler, W. Heer, P. Stiller, H. U. Wenger, M. V. Ramaniah, H. C. Jain, S. K. Aggarwal, S. A. Chitambar, V. D. Kavimandan, A. I. Almaula, P. M. Shah, A. R. Parab, V. L. Sant, A. Delbrassine, L. Smith, J. M. Beeston, R. R. Hobbins, G. W. Gibson, W. C. Francis, H. C. Burkholder, E. L. J. Rosinger, T. V. Krishan, R. J. Gehrke, J. I. Anderson, and D. H. Meikrantz

Subjects
Nuclear and High Energy Physics, Nuclear Energy and Engineering, Condensed Matter Physics
Published
1980
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14. Authors

Author

N. Saba, R. T. Lahey, J. C. Corelli, Magdi M. H. Ragheb, Gregory A. Moses, Charles W. Maynard, P. Silvennoinen, T. Vieno, J. Vira, M. Coquerelle, C. T. Walker, J. E. Till, H. R. Meyer, L. E. Morse, W. D. Bond, E. S. Bomar, V. J. Tennery, Bernard L. Cohen, R. Kohli, F. Holub, Leonard A. Jonas, Victor R. Deitz, and J. B. Romans

Subjects
Nuclear and High Energy Physics, Nuclear Energy and Engineering, Condensed Matter Physics
Published
1980
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16. The Three-Dimensional Time and Volume Averaged Conservation Equations of Two-Phase Flow

Author

D. A. Drew and R. T. Lahey

Subjects
Conservation law, Conservation equations, Flow (mathematics), Mathematical analysis, Two-phase flow, Two fluid, Control volume, Volume (compression), Mathematics
Abstract

The purpose of this paper is to present a concise derivation of the time and volume-averaged conservation equations of two-phase flow. These equations are in a form compatible with numerical evaluations using advanced generation, two fluid computer codes.

Published
1988
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