Numerical simulation of axially symmetric flow around bodies of simple configurations using hierarchy grids
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2016, Vol 1, Issue 1
Abstract
A variation of the statistic Monte-Carlo method for the stationary statement, namely test particles method (TPM), is considered. The study objective is to develop the TPM using computations on hierarchy grids. The replacement of the uniform structured grid used for discretization of the computational domain with the non-uniform hierarchy grid made possible the TPM updating and optimizing the computer resources. It was found that a two-level hierarchy unstructured grid (TLIUG) is best suited to the TPM. The assessment of the advantages of the TLIUG is made possible by comparing the time taken, the grid characteristics and qualities of the distributed gas dynamic parameters in the vicinity of streamlined barriers with the similar data previously obtained on the uniform grids. The developed algorithm of the TPM on the TLIUG is tested using a numerical simulation of an axially symmetric flow around bodies of simple configurations under different flow conditions. A comparison of the integral characteristics of bodies under consideration and the distributed gas dynamic parameters in their vicinity with the available experimental data, those of an integral method and a theory of local interactions and similar results of the TPM on the uniform computational grid demonstrated their complete agreement.
Authors and Affiliations
L. Pecheritsa, T. Smelaya
Keywords
Related Articles
- EP ID EP349607
- DOI -
- Views 80
- Downloads 0
Simulation of straining plate members of reinforced concrete structures for heat-power engineering constructions using finite-element method
The work objective is to study of a stressed-strained state of plate members of reinforced concrete construc-tions for heat power engineering with arbitrarily oriented extended inclusions depending on a combination of th...
Rational selection of parameters of dynamic damper of longitudinal vibrations of liquid launch vehicle
A significant increase in amplitudes of elastic longitudinal vibrations of a launch vehicle (LV) occurring in losses in longitudinal stability of liquid LVs may be responsible for an emergency. Measures for providing lon...
Technique for the computational determination of the hydraulic resistance of a gas-dispersed flow
The aim of this work is to determine the hydraulic resistance of a gas-dispersed flow in a horizontal channel with a minimum of empirical data. Assuming the gas-dispersed flow energy balance as a sum of two terms: the ca...
Effects of variations in form of wheel profiles in operation on dynamic qualities of freight cars and indices of their interaction with railway track
The work objective is to study the effects of variations in the form of the wheel profiles in operation on the dynamic qualities of the freight cars and the indices of their interactions with the rail track. The paper pr...
Studies in effects of increase in diameters of body central bearing and thrust bearing of freight car on its dynamic performance on curved tracks
The paper focuses on evaluation of the effects of increased diameters of the center plate and center bowl of the freight car running on curves on its dynamic qualities. During the last decades the research in improvement...