13:58, 6 July 2024Sunlitskytalkcontribs created page
Landau–Peierls instability(
←Created page with ''''Landau–Peirels instability''' refers to the phenomenon in which the mean square displacements due to thermal fluctuatuions diverge in the
thermodynamic limit and is named after
Lev Landau (1937) and
Rudolf Peierls (1934).<ref>Peierls, R. E. (1935). Annales de l’institut Henri Poincare. Quelques proprietes typiques des corpses solides, 5(177).</ref><ref>Landau, L. D. (1937). Phys. Z. Sowjet Union, 2(26).</ref> This instability prevails in...')
13:27, 4 July 2024Sunlitskytalkcontribs created page
Clavin–Garcia equation(
←Created page with ''''Clavin–Garcia equation''' or '''Clavin–Garcia dispersion relation''' provides the relation between the growth rate and the wave number of the perturbation superposed on a planar
premixed flame, named after
Paul Clavin and Pedro Luis Garcia Ybarra, who derived the dispersion relation in 1983.<ref>Clavin, P., & Garcia, P. (1983). The influence of the temperature dependence of diffusivities on the dynamics. Journal de Mécanique Théorique et Ap...')
13:55, 20 June 2024Sunlitskytalkcontribs created page
Sullivan vortex(
←Created page with '{{short description|Solution to the Navier–Stokes equations}} In
fluid dynamics, the '''Sullivan vortex''' is an exact solution of the
Navier–Stokes equations describing a two-celled vortex in an axially strained flow, that was discovered by Roger D. Sullivan in 1959. <ref>Roger D. Sullivan. (1959). A two-cell vortex solution of the Navier–Stokes equations. Journal of the Aerospace Sciences, 26(11), 767–768.</ref><ref>Donaldson, C. du P. and...')
11:09, 24 May 2024Sunlitskytalkcontribs created page
Landau–de Gennes theory(
←Created page with ''''Landau–de Gennes theory''' describes the NI transition, i.e., phase transition between nematic
liquid crystals and iostropic liquids, which is based on the classical
Landau's theory and was developed by
Pierre-Gilles de Gennes in 1969.<ref>De Gennes, P. G. (1969). Phenomenology of short-range-order effects in the isotropic phase of nematic materials. Physics Letters A , 30 (8), 454-455.</ref> The phenomonologivcal theory uses...')
10:46, 24 May 2024Sunlitskytalkcontribs created page
Q tensor(
←Created page with ''''<math>\mathbf Q</math> tensor''' is an oreintational
order parameter that describes uniaxial and biaxial nematic
liquid crystals and vasnishes in the isotropic phase.<ref>De Gennes, P. G. (1969). Phenomenology of short-range-order effects in the isotropic phase of nematic materials. Physics Letters A , 30 (8), 454-455.</ref> The <math>\mathbf Q</math> tensor is a second-order, traceless, symmetric tensor and is defined by<ref>De Gennes, P. G., &...')
12:15, 9 May 2024Sunlitskytalkcontribs created page
Landau derivative(
←Created page with 'In
gas dynamics, '''Landau derivative''' or '''fundamental derivative of gas dynamics''', named after
Lev Landau who introduced it in 1942,<ref> 1942, Landau, L.D. "On shock waves" J. Phys. USSR 6 229-230.</ref><ref>Thompson, P. A. (1971). A fundamental derivative in gasdynamics. The Physics of Fluids, 14(9), 1843-1849.</ref> refers to a dimensionless physical quantity characterizing the curvature of the isentrope drawn on the
specific volume ve...')
12:27, 25 March 2024Sunlitskytalkcontribs created page
Michelson–Sivashinsky equation(
←Created page with 'In
combustion, '''Michelson–Sivashinsky equation''' describes the evolution of a premixed flame front, subjected to the
Darrieus–Landau instability, in the small heat release approximation. The equation was derived by
Gregory Sivashinsky in 1977,<ref name="Sivashinsky1977">{{cite journal|last1=Sivashinsky|first1=G.I.|title=Nonlinear analysis of hydrodynamic instability in laminar flames—I. Derivation of basic equations|journal=Acta Astrona...')
10:22, 23 March 2024Sunlitskytalkcontribs created page
Janzen–Rayleigh expansion(
←Created page with 'In
fluid dynamics, '''Janzen–Rayleigh expansion''' represents a regular perturbation expansion using the relavant
mach number as the small parameter of expansion for the velocity field that possess slight compressibility effects. The expansion was first studied by O. Janzen in 1913<ref>O. Janzen, Beitrag zu eincr Theorie der stationaren Stromung kompressibler Flussigkeiten. Phys. Zeits., 14 (1913)</ref> and
Lord Rayleigh in 1916.<ref>Rayleigh,...')
13:23, 17 March 2024Sunlitskytalkcontribs created page
Taylor–Maccoll flow(
←Created page with ''''Taylor–Maccoll flow''' refers to the steady flow behind a conical
shock wave that is attached to a solid cone. The flow is named after
G. I. Taylor and J. W. Taylor, who described the flow in 1932, guided by an earlier work of
Theodore von Kármán.<ref>Taylor, G. I., & Maccoll, J. W. (1933). The air pressure on a cone moving at high speeds.—I. Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and P...')
14:36, 14 March 2024Sunlitskytalkcontribs created page
Kármán–Moore theory(
←Created page with ''''Kármán–Moore theory''' is a linearized theory for
supersonic flows over a slender body, named after
Theodore von Kármán and N. R. Moore, who developed the theory in 1932.<ref>Von Karman, T., & Moore, N. B. (1932). Resistance of slender bodies moving with supersonic velocities, with special reference to projectiles. Transactions of the American Society of Mechanical Engineers, 54(2), 303-310.</ref><ref>Ward, G. N. (1949). Supersonic flow pas...')
13:50, 6 March 2024Sunlitskytalkcontribs created page
John W. Dold(
←Created page with '{{Use dmy dates|date=August 2023}} {{Infobox scientist | name = John W. Dold | birth_name = | image = | image_size = | alt = | caption = | birth_date = | birth_place = | death_date = | other_names = | residence = | citizenship = | nationality = | fields = | workplaces =
University of Bristol<br/>
University of Provence<...')
11:48, 26 February 2024Sunlitskytalkcontribs created page
Entropy-vorticity wave(
←Created page with ''''Entropy-vorticity waves''' (or more precisely '''entropy waves''' and '''vorticity waves''') refer to small-amplitude waves carried by the gas within which entropy, vorticity, density but nor pressure perturbations are propagated.<ref name="landau">Landau, L. D., & Lifshitz, E. M. (2013). Fluid Mechanics: Landau and Lifshitz: Course of Theoretical Physics, Volume 6 (Vol. 6). Elsevier. Page 316, section 82.</ref> Entropy-vortivity waves are essentially is...')
15:53, 11 February 2024Sunlitskytalkcontribs created page
Paul H. Roberts(
←Created page with '{{Short description|English physicist}} {{Use dmy dates|date=April 2022}} {{Infobox scientist | birth_name = Paul Harry Roberts | image = | birth_date = {{birth date|df=yes|1929|09|29}} | birth_place =
Aberystwyth, Ceredigion, U.K. | death_date = {{death date and age|df=yes|2022|11|17|1929|09|29}} | death_place =
Isle of Wight, U.K. | citizenship = | ethnicity = | field = Ast...')
21:17, 10 February 2024Sunlitskytalkcontribs created page
Chandrasekhar–Friedman–Schutz instability(
←Created page with ''''Chandrasekhar–Friedman–Schutz instability''' or shortly '''CFS instability''' refers to an instability that can occur in rapidly rotating
stars with which the instability arises for cases where the gravitational radiation reaction is unable to cope with the change in angular momentum associated with the perturbations. The instability was first identified by
Subrahmanyan Chandrasekhar in 1970 and later a simple intuitive explanation of the ins...')
14:55, 19 May 2023Sunlitskytalkcontribs created page
Stewartson layer(
←Created page with 'In
fluid dynamics, '''Stewartson layer''' refers to a thin cylindrical shear layer that connects two differentially rotating regions in the radial direction, namely the inside and outside the cylinder. The Stewartson layer, typically, also connects different Ekman boundary layers in the axial direction. The layer was first described by
Keith Stewartson.<ref>Stewartson, K. (1957). On almost rigid rotations. Journal of Fluid Mechanics, 3(1), 17-26.</r...')
14:58, 29 March 2023Sunlitskytalkcontribs created page
Sathyaprakash Dharmar(
←Created page with '{{Infobox person | name = Sathyaprakash Dharmar | image = | caption = | birth_name = Sathyaprakash Dharmar | birth_date = {{Birth date and age|df=yes|1990|3|18}} | birth_place =
Sholavandan,
Madurai | occupation = Singer | alma_mater = | alias = | spouse = Bhargavi Rangarajan | children = | module = | instrument = | label = | website = https://sathyaprakash.online/ | years_active =...')Tag: Disambiguation links added
14:53, 3 January 2023Sunlitskytalkcontribs created page
Frank T. Smith(
←Created page with '{{Use dmy dates|date=April 2022}} {{Infobox scientist | name = Frank T. Smith | birth_name = | image = | image_size = | alt = | caption = | birth_date = {{Birth year|1948}} | birth_place = | death_date = | other_names = | residence = | citizenship = | nationality = | fields = | workplaces =
University College London | patro...')
12:26, 9 October 2022Sunlitskytalkcontribs created page
Favre averaging(
←Created page with ''''Favre averaging''' is the density-weighted averaging method, used in variable density or compressible turbulent flows, in place of the
Reynolds averaging. The method was introduced by the French scientist A. J. Favre in 1965.<ref>Favre, A. J. (1965). The equations of compressible turbulent gases. Aix-Marseiller University (France) Inst. De Mecanique Statistique De La Turbulence.</ref><ref>Favre, A. J. (1969...')
13:58, 6 July 2024Sunlitskytalkcontribs created page
Landau–Peierls instability(
←Created page with ''''Landau–Peirels instability''' refers to the phenomenon in which the mean square displacements due to thermal fluctuatuions diverge in the
thermodynamic limit and is named after
Lev Landau (1937) and
Rudolf Peierls (1934).<ref>Peierls, R. E. (1935). Annales de l’institut Henri Poincare. Quelques proprietes typiques des corpses solides, 5(177).</ref><ref>Landau, L. D. (1937). Phys. Z. Sowjet Union, 2(26).</ref> This instability prevails in...')
13:27, 4 July 2024Sunlitskytalkcontribs created page
Clavin–Garcia equation(
←Created page with ''''Clavin–Garcia equation''' or '''Clavin–Garcia dispersion relation''' provides the relation between the growth rate and the wave number of the perturbation superposed on a planar
premixed flame, named after
Paul Clavin and Pedro Luis Garcia Ybarra, who derived the dispersion relation in 1983.<ref>Clavin, P., & Garcia, P. (1983). The influence of the temperature dependence of diffusivities on the dynamics. Journal de Mécanique Théorique et Ap...')
13:55, 20 June 2024Sunlitskytalkcontribs created page
Sullivan vortex(
←Created page with '{{short description|Solution to the Navier–Stokes equations}} In
fluid dynamics, the '''Sullivan vortex''' is an exact solution of the
Navier–Stokes equations describing a two-celled vortex in an axially strained flow, that was discovered by Roger D. Sullivan in 1959. <ref>Roger D. Sullivan. (1959). A two-cell vortex solution of the Navier–Stokes equations. Journal of the Aerospace Sciences, 26(11), 767–768.</ref><ref>Donaldson, C. du P. and...')
11:09, 24 May 2024Sunlitskytalkcontribs created page
Landau–de Gennes theory(
←Created page with ''''Landau–de Gennes theory''' describes the NI transition, i.e., phase transition between nematic
liquid crystals and iostropic liquids, which is based on the classical
Landau's theory and was developed by
Pierre-Gilles de Gennes in 1969.<ref>De Gennes, P. G. (1969). Phenomenology of short-range-order effects in the isotropic phase of nematic materials. Physics Letters A , 30 (8), 454-455.</ref> The phenomonologivcal theory uses...')
10:46, 24 May 2024Sunlitskytalkcontribs created page
Q tensor(
←Created page with ''''<math>\mathbf Q</math> tensor''' is an oreintational
order parameter that describes uniaxial and biaxial nematic
liquid crystals and vasnishes in the isotropic phase.<ref>De Gennes, P. G. (1969). Phenomenology of short-range-order effects in the isotropic phase of nematic materials. Physics Letters A , 30 (8), 454-455.</ref> The <math>\mathbf Q</math> tensor is a second-order, traceless, symmetric tensor and is defined by<ref>De Gennes, P. G., &...')
12:15, 9 May 2024Sunlitskytalkcontribs created page
Landau derivative(
←Created page with 'In
gas dynamics, '''Landau derivative''' or '''fundamental derivative of gas dynamics''', named after
Lev Landau who introduced it in 1942,<ref> 1942, Landau, L.D. "On shock waves" J. Phys. USSR 6 229-230.</ref><ref>Thompson, P. A. (1971). A fundamental derivative in gasdynamics. The Physics of Fluids, 14(9), 1843-1849.</ref> refers to a dimensionless physical quantity characterizing the curvature of the isentrope drawn on the
specific volume ve...')
12:27, 25 March 2024Sunlitskytalkcontribs created page
Michelson–Sivashinsky equation(
←Created page with 'In
combustion, '''Michelson–Sivashinsky equation''' describes the evolution of a premixed flame front, subjected to the
Darrieus–Landau instability, in the small heat release approximation. The equation was derived by
Gregory Sivashinsky in 1977,<ref name="Sivashinsky1977">{{cite journal|last1=Sivashinsky|first1=G.I.|title=Nonlinear analysis of hydrodynamic instability in laminar flames—I. Derivation of basic equations|journal=Acta Astrona...')
10:22, 23 March 2024Sunlitskytalkcontribs created page
Janzen–Rayleigh expansion(
←Created page with 'In
fluid dynamics, '''Janzen–Rayleigh expansion''' represents a regular perturbation expansion using the relavant
mach number as the small parameter of expansion for the velocity field that possess slight compressibility effects. The expansion was first studied by O. Janzen in 1913<ref>O. Janzen, Beitrag zu eincr Theorie der stationaren Stromung kompressibler Flussigkeiten. Phys. Zeits., 14 (1913)</ref> and
Lord Rayleigh in 1916.<ref>Rayleigh,...')
13:23, 17 March 2024Sunlitskytalkcontribs created page
Taylor–Maccoll flow(
←Created page with ''''Taylor–Maccoll flow''' refers to the steady flow behind a conical
shock wave that is attached to a solid cone. The flow is named after
G. I. Taylor and J. W. Taylor, who described the flow in 1932, guided by an earlier work of
Theodore von Kármán.<ref>Taylor, G. I., & Maccoll, J. W. (1933). The air pressure on a cone moving at high speeds.—I. Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and P...')
14:36, 14 March 2024Sunlitskytalkcontribs created page
Kármán–Moore theory(
←Created page with ''''Kármán–Moore theory''' is a linearized theory for
supersonic flows over a slender body, named after
Theodore von Kármán and N. R. Moore, who developed the theory in 1932.<ref>Von Karman, T., & Moore, N. B. (1932). Resistance of slender bodies moving with supersonic velocities, with special reference to projectiles. Transactions of the American Society of Mechanical Engineers, 54(2), 303-310.</ref><ref>Ward, G. N. (1949). Supersonic flow pas...')
13:50, 6 March 2024Sunlitskytalkcontribs created page
John W. Dold(
←Created page with '{{Use dmy dates|date=August 2023}} {{Infobox scientist | name = John W. Dold | birth_name = | image = | image_size = | alt = | caption = | birth_date = | birth_place = | death_date = | other_names = | residence = | citizenship = | nationality = | fields = | workplaces =
University of Bristol<br/>
University of Provence<...')
11:48, 26 February 2024Sunlitskytalkcontribs created page
Entropy-vorticity wave(
←Created page with ''''Entropy-vorticity waves''' (or more precisely '''entropy waves''' and '''vorticity waves''') refer to small-amplitude waves carried by the gas within which entropy, vorticity, density but nor pressure perturbations are propagated.<ref name="landau">Landau, L. D., & Lifshitz, E. M. (2013). Fluid Mechanics: Landau and Lifshitz: Course of Theoretical Physics, Volume 6 (Vol. 6). Elsevier. Page 316, section 82.</ref> Entropy-vortivity waves are essentially is...')
15:53, 11 February 2024Sunlitskytalkcontribs created page
Paul H. Roberts(
←Created page with '{{Short description|English physicist}} {{Use dmy dates|date=April 2022}} {{Infobox scientist | birth_name = Paul Harry Roberts | image = | birth_date = {{birth date|df=yes|1929|09|29}} | birth_place =
Aberystwyth, Ceredigion, U.K. | death_date = {{death date and age|df=yes|2022|11|17|1929|09|29}} | death_place =
Isle of Wight, U.K. | citizenship = | ethnicity = | field = Ast...')
21:17, 10 February 2024Sunlitskytalkcontribs created page
Chandrasekhar–Friedman–Schutz instability(
←Created page with ''''Chandrasekhar–Friedman–Schutz instability''' or shortly '''CFS instability''' refers to an instability that can occur in rapidly rotating
stars with which the instability arises for cases where the gravitational radiation reaction is unable to cope with the change in angular momentum associated with the perturbations. The instability was first identified by
Subrahmanyan Chandrasekhar in 1970 and later a simple intuitive explanation of the ins...')
14:55, 19 May 2023Sunlitskytalkcontribs created page
Stewartson layer(
←Created page with 'In
fluid dynamics, '''Stewartson layer''' refers to a thin cylindrical shear layer that connects two differentially rotating regions in the radial direction, namely the inside and outside the cylinder. The Stewartson layer, typically, also connects different Ekman boundary layers in the axial direction. The layer was first described by
Keith Stewartson.<ref>Stewartson, K. (1957). On almost rigid rotations. Journal of Fluid Mechanics, 3(1), 17-26.</r...')
14:58, 29 March 2023Sunlitskytalkcontribs created page
Sathyaprakash Dharmar(
←Created page with '{{Infobox person | name = Sathyaprakash Dharmar | image = | caption = | birth_name = Sathyaprakash Dharmar | birth_date = {{Birth date and age|df=yes|1990|3|18}} | birth_place =
Sholavandan,
Madurai | occupation = Singer | alma_mater = | alias = | spouse = Bhargavi Rangarajan | children = | module = | instrument = | label = | website = https://sathyaprakash.online/ | years_active =...')Tag: Disambiguation links added
14:53, 3 January 2023Sunlitskytalkcontribs created page
Frank T. Smith(
←Created page with '{{Use dmy dates|date=April 2022}} {{Infobox scientist | name = Frank T. Smith | birth_name = | image = | image_size = | alt = | caption = | birth_date = {{Birth year|1948}} | birth_place = | death_date = | other_names = | residence = | citizenship = | nationality = | fields = | workplaces =
University College London | patro...')
12:26, 9 October 2022Sunlitskytalkcontribs created page
Favre averaging(
←Created page with ''''Favre averaging''' is the density-weighted averaging method, used in variable density or compressible turbulent flows, in place of the
Reynolds averaging. The method was introduced by the French scientist A. J. Favre in 1965.<ref>Favre, A. J. (1965). The equations of compressible turbulent gases. Aix-Marseiller University (France) Inst. De Mecanique Statistique De La Turbulence.</ref><ref>Favre, A. J. (1969...')