Autor: Kumar, M. Dinesh - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Effects of thermal radiation and heat generation on hydromagnetic flow of nanofluid over an exponentially stretching sheet in a porous medium with viscous dissipation
Autorzy:: Murugesan, Thiagarajan
Kumar, M. Dinesh
Tematy:: MHD
Nanofluid
exponentially stretching sheet
heat generation
porous medium
thermal radiation
viscous dissipation; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1059429.pdf Link otwiera się w nowym oknie
Opis:: This paper studies, the impacts of heat generation on MHD flow of radiative nanofluid over an exponentially stretching sheet in a porous medium with viscous dissipation are numerically analyzed. Two sorts of nanofluids, generated by solid nanoparticles with water such as alumina-water nanofluid and silver-water nanofluid were investigated. With the use of similarity transformations, to obtain a system of nonlinear ordinary differential equations. The resulting boundary value problem is solved numerically using the Nachtsheim-Swigert shooting technique scheme together with fourth-order Runge-Kutta integration method. Numerical results are obtained for the velocity, temperature distribution and concentration profiles for selected values of the governing physical parameters of combined magnetic interaction and porosity parameter, heat generation parameter, viscous dissipation parameter, thermal radiation parameter, solid volume fraction parameter, chemical reaction parameter and Lewis number are discussed. Quantities of engineering interest such as Skin friction coefficient, Nusselt number, and Sherwood number are also obtained numerically and are tabulated.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Viscous dissipation and Joule heating effects on MHD flow of a Thermo-Solutal stratified nanofluid over an exponentially stretching sheet with radiation and heat generation/absorption
Autorzy:: Murugesan, Thiagarajan
Kumar, M. Dinesh
Tematy:: Nanofluid
double stratification
exponentially stretching sheet
heat generation/absorption
viscous-ohmic dissipation; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1075514.pdf Link otwiera się w nowym oknie
Opis:: The present study is focused on the influence of viscous and joules dissipation on magnetohydrodynamic flow of a double-stratified nanofluid past an exponentially stretching sheet in the presence of thermal radiation and heat generation/absorption effects. The governing nonlinear partial differential equations are transformed into a system of nonlinear ordinary differential equations using similarity variables and then solved numerically for these equations is procured by employing the Nachtsheim-Swigert shooting technique scheme together with Runge-Kutta Fourth-Order method. A parametric analysis has been carried out to investigate the impacts of physical parameters taken in the problem. The pattern worked for the nanofluid transport equations unified the impacts of thermophoresis and Brownian motion. Numerical results are obtained for the velocity, temperature and concentration in the boundary layer region is studied in elaborate. The impact of physical interest such as local skin friction coefficient, local nusselt number, and local Sherwood number are also investigated numerically and are tabulated. It is remarked that Schmidt number and thermal stratification parameter decreases the dimensionless temperature, during the solutal stratification parameter decreases the dimensionless concentration.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Homotopy Perturbation Method of Hydromagnetic Flow and Heat Transfer of a Casson Fluid over an Exponentially Shrinking Sheet
Autorzy:: Murugesan, Thiagarajan
Varshini, S.
Kumar, M. Dinesh
Tematy:: Casson Fluid
Homotopy Perturbation method
MHD
Runge-Kutta method
suction; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1031915.pdf Link otwiera się w nowym oknie
Opis:: Nonlinear hydromagnetic flow and heat transfer of a Casson fluid over an exponentially shrinking sheet has been investigated. The fluid is assumed to be viscous, incompressible and electrically conducting. The similarity transformations are applied to reduce the non-linear partial differential equations into the non-linear ordinary differential equations. Homotopy Perturbation Method is used to solve the resulting non-linear differential equations under appropriate boundary conditions. The impact of Casson fluid parameter, magnetic interaction parameter, suction parameter and Prandtl number on both velocity and temperature profiles are shown graphically. Thermal boundary layer thickness decreases with increasing Prandtl number. Effect of Casson fluid parameter is to reduce both the velocity and temperature. Quantities of physical interest such as skin-friction coefficient, non-dimensional rate of heat transfer are solved numerically. A comparison reveals a remarkable agreement between the Homotopy Perturbation Method and Runge-Kutta fourth order method.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Broadband multi-wavelength properties of M87 during the 2018 EHT campaign including a very high energy flaring episode
Autorzy:: Nickel, L.
Vos, J.
Errando, M.
Niinuma, K.
Maldera, S.
Saturni, F. G.
Satapathy, K.
Brissenden, R.
Impellizzeri, C. M. V.
Issaoun, S.
Kubo, H.
Roache, E.
Moriyama, K.
Berenji, B.
Georgiev, B.
Patel, N.
Lindfors, E.
Kaaret, P.
Foote, J.
Leone, F.
Ceribella, G.
Hadasch, D.
Johnson, M. D.
Hahn, A.
Kluźniak, W.
Negro, M.
Godinović, N.
Okumura, A.
Kim, D.-J.
Barres de Almeida, U.
Chan, C.-k.
Biland, A.
Moran, J. M.
Abhishek, A.
Green, D.
Silvestri, G.
de Naurois, M.
Weintroub, J.
Takahashi, M.
Wach, T.
Honma, M.
Mizuno, T.
Zech, A.
Eatough, R. P.
Stamerra, A.
Mereu, I.
Paredes, J. M.
Suson, D. J.
Lombardi, S.
Inoue, M.
Einecke, S.
Nigro, C.
Ryan, J. L.
Chang, D. O.
Nishijima, K.
Millard, M. J.
Jannuzi, B. T.
McGrath, C. E.
Ward-Thompson, D.
Kramer, M.
Roelofs, F.
Gradetzke, T.
Liu, X.
Santangelo, A.
Kettenis, M.
Brose, R.
Fukami, S.
Doro, M.
Hirota, T.
Matthews, L. D.
Ohm, S.
Fröse, S.
Chen, Y.
Liuzzo, E.
Marchili, N.
Ricarte, A.
Duerr, A.
Ravikularaman, S.
Sánchez-Conde, M.
Huang, Zhiqiu
Shao, L.
Font, L.
Lo, W.-P.
Chatterjee, S.
Grenier, I. A.
Antonelli, L. A.
Giordano, F.
Leitl, F.
Rani, B.
Di Pierro, F.
Colombo, E.
Neilsen, J.
Kosack, K.
Holch, T. L.
Navarro Fuentes, S.
Nanci, C.
Haggard, D.
Berge, D.
Wagner, S. J.
Kravchenko, E. V.
Tavecchio, F.
Ramakrishnan, V.
Li, G.
Tsirou, M.
Schloerb, F. P.
Rottmann, H.
Caraveo, P. A.
Boisson, C.
Miener, T.
Toma, K.
Holder, J.
Sgrò, C.
Bradascio, F.
Grau, R.
Bach, U.
Aguasca-Cabot, A.
Kasai, E.
Barrio, J. A.
Contreras, J. L.
Jiménez-Rosales, A.
Fraga-Encinas, R.
Savolainen, T.
Gargano, F.
Bonino, R.
Panny, S.
Arbet Engels, A.
Narayanan, G.
Cotter, G.
Kramer, J. A.
Mizuno, Y.
O’Brien, S.
Nilsson, K.
Mackey, J.
Bautista, A.
Berti, A.
de Bony de Lavergne, M.
Tanaka, T.
Brown, A.
Germani, S.
Cui, Y.-Z.
Benson, B. A.
Falcone, A. D.
Babić, A.
Cerasole, D.
Fariña, L.
Zhao, R.
Lang, R. G.
Özel, F.
Kim, J.
Vassiliev, V. V.
Lamastra, A.
Ball, D.
Chen, M.-T.
Johnson, M. N.
Humensky, T. B.
Ernenwein, J.-P.
Kushida, J.
Nakamura, M.
Prada Moroni, P. G.
Santander, M.
Dazzi, F.
Paoletti, R.
La Bella, N.
Sohn, B. W.
Fuentes, A.
Celic, J.
Terauchi, K.
Myserlis, I.
Stanway, J. S.
Bronzwaer, T.
Cho, I.
Torres, D. F.
Ro, H.
Barrett, J.
Elsaesser, D.
Blanch, O.
Wielgus, M.
Sitarek, J.
Djuvsland, J.
Sánchez-Portal, M.
Khatoon, R.
Funk, S.
Loparco, F.
Reville, B.
Majumdar, P.
Otero-Santos, J.
Chatterjee, K.
Natarajan, I.
Hinrichs, C. E.
Zhao, G.-Y.
Torne, P.
Gaug, M.
Omodei, N.
Castro-Tirado, A. J.
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Cerruti, M.
Mondal, H. A.
Bruel, P.
Pensec, U.
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lackburn, L.
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Park, J.
Kramer, C.
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Machado de Oliveira Fraga, B.
Pirola, G.
Liu, J.
Ford, N. M.
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Small, D.
Dihingia, I. K.
De Lotto, B.
Kumar, S.
Nagai, H.
Kerszberg, D.
Nievas Rosillo, M.
Tazaki, F.
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Persic, M.
Saz Parkinson, P. M.
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Tutone, A.
Malyshev, D.
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Yamaguchi, P.
Righi, C.
Suzuki, H.
Goswami, P.
Furniss, A.
Keating, G. K.
Prather, B.
Di Tria, R.
Wong, G. N.
Porth, O.
de Ona Wilhelmi, E.
Maneva, G.
Chen, Z.
Baczko, A.-K.
Mariotti, M.
Strzys, M.
Barbosa Martins, V.
Oh, J.
Zensus, J. A.
Krichbaum, T. P.
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Li, B.
Principe, G.
D’Elia, V.
Batzofin, R.
Sharma, A.
Gold, R.
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Longo, F.
Manganaro, M.
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Kleiner, T. K.
Lovellette, M. N.
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Lonsdale, C. J.
Zhao, S.-S.
Cavazzuti, E.
Mitchell, A.
Panter, M.
Salzmann, H.
Foschi, M.
Jeter, B.
Stawarz, Łukasz
Busetto, G.
Toscano, T.
Sheridan, C.
Gómez-Ruiz, A. I.
Hassan, T.
D’Amico, G.
Jorstad, S.
Li, Z.
Yuan, Y.-F.
Olivares, H.
PopStefanija, A.
Schonfeld, J.
Katarzyński, K.
van Eldik, C.
Yfantis, A.
López-Moya, M.
Mazin, D.
Carosi, R.
Cheong, W.-Y.
Wang, N.
Takeishi, R.
Domínguez, A.
Dominis Prester, D.
Artero, M.
García, R.
Sahakian, V.
Müller, C.
Streil, K.
López-Coto, R.
Hanlon, W.
Roshanineshat, A.
Aniello, T.
Vazquez Acosta, M.
Dexter, J.
Matsushita, S.
Njoh Ekoume, T.
Dinesh, A.
Jung-Richardt, I.
Tilanus, R. P. J.
Burelli, I.
Emami, R.
Shapopi, J. N. S.
Yu, W.
Dorner, D.
Jiménez Martínez, I.
Sciaccaluga, A.
Schüssler, F.
Vovk, I.
Sakai, N.
Arcaro, C.
Grolleron, G.
Lang, M. J.
Dempsey, J.
Heckmann, L.
Kertzman, M.
Washington, J. E.
Martí-Devesa, G.
Sánchez, S.
Ikeda, S.
Marrone, D. P.
Yuan, F.
Lisakov, M.
MacDonald, N. R.
Sol, H.
Di Lalla, N.
Molero González, M.
Blandford, R. D.
Mizuno, I.
Garczarczyk, M.
Musoke, G.
Holler, M.
Pesce, D. W.
Orlando, E.
Hays, E.
Cecil, R.
Algaba, J. C.
Pen, U.-L.
Lowitz, A. E.
Cristarella Orestano, P.
Hrupec, D.
Fromm, C. M.
Azulay, R.
Conroy, N. S.
Koch, P. M.
Alberdi, A.
Roy, A. L.
Pihet, M.
Moralejo, A.
Young, A.
Da Vela, P.
Batković, I.
Gu, M.
Markoff, S.
Fontaine, G.
Titus, M.
Kuo, C.-Y.
Michail, J.
Chen, A.
Wiik, K.
Neustroev, V.
Lico, R.
Montanari, A.
Sembroski, G. H.
Besenrieder, J.
Desvignes, G.
Lenain, J.-P.
Moulin, E.
Kofuji, Y.
Carosi, A.
Moriarty, P.
Miranda, J. M.
van Langevelde, H. J.
Abe, S.
van Rossum, D. R.
Böttcher, M.
Ruszczyk, C.
Covino, S.
Bower, G. C.
Ripperda, B.
Ong, R. A.
Priyadarshi, C.
Tucci, J. V.
Temnikov, P.
Meyer, M.
Blundell, R.
Koay, J. Y.
Di Venere, L.
Damascene Mbarubucyeye, J.
Moderski, R.
O’Brien, P.
Mannheim, K.
Jones, A. C.
Doeleman, S. S.
Cortina, J.
Turk, M.
Makariev, M.
Huang, C.-W. L.
Prandini, E.
Pohl, M.
Wu, Q.
Heumann, D.
Reynolds, P. T.
Freeman, W. T.
Raymond, A. W.
Franckowiak, A.
Truzzi, S.
Monzani, M. E.
Loinard, L.
Friberg, P.
Giliberti, M.
Mao, J.
Jormanainen, J.
James, D. J.
Molina, E.
Abhir, J.
Gentaz, O.
Okino, H.
Rao, R.
Ribeiro, D.
Crawford, T. M.
Gómez, J. L.
Chael, A.
Deane, R.
Lyard, E.
van Scherpenberg, J.
Sadeh, I.
Ciprini, S.
Maier, G.
Imazawa, R.
Mas-Aguilar, A.
Pita, S.
Liu, Z.
Ubach, S.
Donini, A.
Savchenko, S. S.
Dhruv, V.
Schmidt, K.
Cifuentes, A.
Kundu, A.
Palumbo, D. C. M.
Green, J. G.
Zacharias, M.
Lundy, M.
Sasada, M.
Niemiec, J.
Kawashima, T.
Bonnoli, G.
Acciari, V. A.
Filippos Paraschos, G.
Günther, P.
Will, M.
Glawion, D.
Cutini, S.
Peresano, M.
Feng, Q.
Chai, Y.
Traianou, E.
Hada, K.
Luashvili, A.
Ishio, K.
Sahakyan, N.
Quinn, J.
Paneque, D.
Kerby, S.
Kieda, D.
Saha, L.
Adams, C. B.
Glicenstein, J. F.
Gammie, C. F.
Acharyya, A.
Broguiere, D.
Wajima, K.
Lu, R.-S.
Sasaki, M.
Delfino, M.
Carlstrom, J. E.
Reimer, O.
Steppa, C.
Sosapanta Salas, L. D.
Lemière, A.
Bruno, B.
Bigongiari, C.
Marscher, A. P.
Giroletti, M.
Fortson, L.
Ros, E.
Cameron, R. A.
Ostrowski, Michał
Taylor, A. M.
Vecchi, M.
Lindahl, G.
Jung, T.
Koyama, S.
Casanova, S.
Baxter, J.
Schweizer, T.
Nowak, M. A.
Martínez-Chicharro, M.
Quirrenbach, A.
Foffano, L.
Witzel, G.
Britzen, S.
Fegan, S. J.
Ruiz, I.
Backes, M.
Bošnjak, Ž.
De Angelis, A.
Yamamoto, T.
Schutte, H. M.
Liu, K.
Miceli, D.
Menten, K. M.
Christian, P.
Zhong, W.
Campoy-Ordaz, A.
Terzić, T.
Ragan, K.
Joshi, A. V.
Giglietto, N.
D’Ammando, F.
Fattorini, A.
Walter, R.
Haerer, L.
Teshima, M.
Bandyopadhyay, B.
Bednarek, W.
Agudo, I.
Gurwell, M. A.
Ma, J.
Falcke, H.
de Menezes, R.
Shang, R.
Moghadam, M. O.
Bintley, D.
Zaharijas, G.
Medeiros, L.
Bulik, T.
Kino, M.
Komin, Nu.
Loporchio, S.
Nathanail, A.
Ruiz-Velasco, E.
Mirabal, N.
Lee, S.-S.
Trent, T.
Bangale, P.
Bernardini, E.
Bissaldi, E.
Noda, K.
Hughes, D. H.
Parsons, H.
Reimer, A.
Becerra González, J.
Gabici, S.
Kaur, A.
Żywucka, N.
Piétu, V.
Tajima, H.
Bronzini, E.
Ansoldi, S.
Kayanoki, T.
Lemoine-Goumard, M.
Sánchez-Argüelles, D.
Asano, K.
Siskind, E. J.
Vigorito, C. F.
Strom, D.
Mooney, C. L.
Viale, I.
Müller, H.
Nakamori, T.
Rico, J.
Karuppusamy, R.
Asada, K.
Chand, T.
Rygl, K. L. J.
Fusco, P.
Mukherjee, R.
Lorini, A.
Gliwny, P.
Spinelli, P.
Wagner, J.
Khélifi, B.
Oyama, T.
Ni, C.
Bellazzini, R.
Bouyahiaoui, M.
Jamrozy, Marek
Yonekura, Y.
Crew, G. B.
Devin, J.
Pueschel, E.
Younsi, Z.
Sawada-Satoh, S.
Jin, W.
Ventura, S.
Bartkoske, J. T.
Mender, S.
Williams, D. A.
Shen, Z.
Levis, A.
Goddi, C.
Kluge, G. W.
Heß, B.
Nagar, N. M.
Strišković, J.
Ning, W.
Michelson, P. F.
Chibueze, O.
Chandra, S.
SooHoo, J.
Alef, W.
Wardle, J.
Wunderlich, C.
Fish, V. L.
Spencer, S.
Rainò, S.
Talluri, A. K.
Huang, L.
Sobczynska, D.
Ren, H.
Rezzolla, L.
Liu, Q.
Nozaki, S.
Paiano, S.
Horns, D.
Nair, D. G.
Mangano, S.
Ribó, M.
Benbow, W.
Roellinghoff, G.
Pu, H.-Y.
Morcuende, D.
Spolon, A.
Láinez, M.
Mirzoyan, R.
Christiansen, J. L.
Rudak, B.
Liodakis, I.
Akiyama, K.
Rawlings, M. G.
Gasparyan, S.
Escudero, J.
Dzib, S. A.
Bremer, M.
Mulaudzi, W.
Larsson, S.
Sliusar, V.
Ho, L. C.
Delgado, J.
Dmytriiev, A.
Broderick, A. E.
Cheung, C. C.
Aharonian, F.
Cheng, X.
Chibueze, J.
Schuster, K.-F.
Burger-Scheidlin, C.
Yoon, D.
Sabri, K.
Terrier, R.
Feijen, K.
Bolmont, J.
Galison, P.
Souccar, K.
Ait Benkhali, F.
Kim, J.-Y.
Ho, P.
Montgomery, J.
Cui, L.
Korzoun, N.
Bernete, J.
García López, R. J.
Dahale, R.
Saito, T.
Romero-Cañizales, C.
Cruz-Osorio, A.
Pühlhofer, G.
Vitale, V.
Wong, S. L.
van Bemmel, I.
López-Oramas, A.
Zdziarski, A. A.
Wharton, R.
Tluczykont, M.
Wondrak, M. F.
Jankowsky, F.
Horan, D.
Zhang, S.
Delgado Mendez, C.
Hervet, O.
Janssen, M.
Bustamante, S.
Schubert, J. L.
Suda, Y.
Rieger, F.
Kouch, P. M.
Wang, J.
Mohrmann, L.
Jiang, W.
Opis:: Context. The nearby elliptical galaxy M87 contains one of only two supermassive black holes whose emission surrounding the event horizon has been imaged by the Event Horizon Telescope (EHT). In 2018, more than two dozen multi-wavelength (MWL) facilities (from radio to γ-ray energies) took part in the second M87 EHT campaign. Aims. The goal of this extensive MWL campaign was to better understand the physics of the accreting black hole M87*, the relationship between the inflow and inner jets, and the high-energy particle acceleration. Understanding the complex astrophysics is also a necessary first step towards performing further tests of general relativity. Methods. The MWL campaign took place in April 2018, overlapping with the EHT M87* observations. We present a new, contemporaneous spectral energy distribution (SED) ranging from radio to very high-energy (VHE) γ-rays as well as details of the individual observations and light curves. We also conducted phenomenological modelling to investigate the basic source properties. Results. We present the first VHE γ-ray flare from M87 detected since 2010. The flux above 350 GeV more than doubled within a period of ≈36 hours. We find that the X-ray flux is enhanced by about a factor of two compared to 2017, while the radio and millimetre core fluxes are consistent between 2017 and 2018. We detect evidence for a monotonically increasing jet position angle that corresponds to variations in the bright spot of the EHT image. Conclusions. Our results show the value of continued MWL monitoring together with precision imaging for addressing the origins of high-energy particle acceleration. While we cannot currently pinpoint the precise location where such acceleration takes place, the new VHE γ-ray flare already presents a challenge to simple one-zone leptonic emission model approaches, and it emphasises the need for combined image and spectral modelling.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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