نتایج جستجو برای: hydrodynamic models

تعداد نتایج: 929162  

Journal: :Research notes of the AAS 2021

Abstract In this research note, we outline the extension of grid upper atmosphere models first presented in Kubyshkina et al. The original is based on a 1D hydrodynamic model and consists about 7000 covering planets size ranging from that Earth to twice Neptune at orbits corresponding equilibrium temperatures between 300 2000 K around solar-like (0.4 1.3 solar mass) stars. extended revised 10,2...

Journal: :Publications of the Astronomical Society of Japan 1996

Journal: :iranian journal of science and technology (sciences) 2005
a. ghasemizad

in isobaric models for inertial confinement fusion it is assumed that the target configurationat stagnation time (maximum compression) consists of two regions, hot spark and cold fuel, respectively.here the conditions of spark formation and ignition in hydrogen equimolar isotopes in central sparkignition are investigated and permissible values of hs and ts are evaluated numerically. by introduc...

Journal: :روش های عددی در مهندسی (استقلال) 0
محسن ایزدی نیا و محمد تقی احمدی m. izadi-nia and m. t. ahmadi

arch dams are generally built in cantilvever monoliths. vertical contraction joints between monoliths control the stresses due to concrete shrinkage and temperature variations. past studies in earthquake safety evaluation of the system often show the tensile fracture and local nonlinear deformation of joints. in this paper, some nonlinear joint element constitutive models are presented to exami...

2001
James C. Lombardi Frederic A. Rasio

We review recent 3D hydrodynamic calculations of stellar collisions using the Smoothed Particle Hydrodynamics (SPH) method, and we discuss the implications of the results for the formation and evolution of blue stragglers in globular clusters. We also discuss the construction of simple analytic models for merger remnants, approximating the mass loss, shock heating, mixing, and angular momentum ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی 1387

abstract this paper discusses several commonly used models for strategic marketing¹ including market environmental analysis methods (i.e. swot and pest analysis) and strategic marketing tools and techniques (i.e. boston matrix and shell directional policy matrix)and shows how these models may help a firm to achieve its strategic goals. at first, the main reason for doing this research is de...

2003
Jiří Krtičká

We present a simple method for the solution of one-component and multicomponent hydrodynamic equations based on the NewtonRaphson method. We show that this method can be used for the solution of stationary hydrodynamic equations. This method has been used for the calculation of the low density stellar wind models for which the multicomponent nature of the wind influences the overall wind struct...

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