Реферат: Solid phase condensation dynamics is an important element for the theory of planet formation as well as for the hypothesis of abiogenous synthesis in a protoplanetary gas-dust disc concerned as a global chemical reactor. We use 3D2V numerical model for simulation of nonstationary processes in self-consistent gravitating systems of N-bodies and gas taking into account also external fields (from a central mass and other sources fixed in space). The model is based on co-solving 3D Poison equation, Vlasov equation (PIC method) and the system of gasdynamic equations provided the motions are constrained in the disc plane. Some questions in our study are as follows. What are dimensionless parameters affecting the threshold of two-phase system transition from a stable to unstable state? Could changes in parameters of the component of very low content cause instability of the system as a whole? How does the threshold of transition from a stable to unstable state depend on the central mass? The results of simulation experiments are represented and discussed.

Библиографическая ссылка: Nikitin S.A. , Snytnikov V.N. , Vshivkov V.A.
Gravitational Instability of Protoplanetary Disc
В сборнике Международное рабочее совещание «Происхождение и эволюция биосферы», Новосибирск, 26–29 июня 2005 года : тезисы докладов. – ИК СО РАН., 2005. – C.133-. РИНЦ

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37237128

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