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Start Over Descriptor "THERMODYNAMIC VARIABLES" Publisher elsevier
3 results on '"THERMODYNAMIC VARIABLES"'

1. Solving protoplanetary structure equations using Adomian decomposition method

Author

Gour Chandra Paul, Shahinur Khatun, Md. Nuruzzaman, Dipankar Kumar, Md. Emran Ali, Farjana Bilkis, and Mrinal Chandra Barman

Subjects
Thermodynamic variables, Protoplanet, Disk instability, Adomian decomposition method, Science (General), Q1-390, Social sciences (General), H1-99
Abstract

In this paper, the distribution of thermodynamic variables in the protoplanets formed by gravitational instability in the mass range 0.3−10MJ (1MJ=1 Jupiter mass = 1.8986×1030 gm) is investigated in their initial state by solving the structure equations via the Adomian decomposition method. Concerning the heat transfer in the protoplanets, the mode of convection is taken into account. The outcomes indicate that there is a reasonably good agreement between the Adomian semi-analytical solution containing only first 8 terms and the numerical results.

Published
2021
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2. Distribution of thermodynamic variables inside extra-solar protoplanets formed via disk instability

Author

G.C. Paul and S.K. Bhattacharjee

Subjects
Conductive–radiative, Disk instability, Jupiter, Protoplanet, Thermodynamic variables, Geodesy, QB275-343
Abstract

In this paper, distribution of thermodynamic variables inside extra-solar protoplanets in their initial stages, formed by gravitational instability, is presented. The case of conduction–radiation is considered regarding the transference of heat inside the protoplanets. The results are found to compare well with the ones obtained by other investigations.

Published
2013
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3. On the implementation of novel RKARMS(4,4) algorithm to study the structures of initial extrasolar giant protoplanets

Author

Sukumar Senthilkumar, Hafijur Rahman, and Gour Chandra Paul

Subjects
0301 basic medicine, Convective heat transfer, Thermodynamic variables, Astrophysics, Instability, Article, 03 medical and health sciences, 0302 clinical medicine, lcsh:Social sciences (General), lcsh:Science (General), Physics, Multidisciplinary, Truncation errors, Computational mathematics, Radius, Applied mathematics, 030104 developmental biology, Fourth order, RKARMS(4,4) algorithm, lcsh:H1-99, Extrasolar protoplanets, Planetary sciences, Protoplanet, Algorithm, 030217 neurology & neurosurgery, lcsh:Q1-390
Abstract

The main motivation and novel notion of this present communication is to implement the recently suggested fourth order with four stages embedded RKARMS(4,4) algorithm to examine its efficiency in reinvesting the structures of extrasolar protoplanets formed via disk instability which being presented in Paul et al. [1] (G.C. Paul, M.M. Rahman, D. Kumar, M.C. Barman, the radius spectrum of solid grains settling in gaseous giant protoplanets, Earth Sci. Inform. 6 (2013) 137–144) for the case of convective heat transfer using classical Runge-Kutta (RK) technique of order four. The results by the RKARMS(4,4) algorithm compared well with those obtained by the classical RK method of order four for any time length and found to be more suitable., Applied mathematics; Astrophysics; Computational mathematics; Planetary sciences; Extrasolar protoplanets; Instability; Thermodynamic variables; RKARMS(4,4) algorithm; Truncation errors.

Published
2019

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