Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5028339 | Procedia Engineering | 2017 | 8 Pages |
Abstract
When considering human activity nowadays one can meet the blast load overpressure caused by different actions. From the point of view of people and building security one of the main destroying factor is the air shock wave. Rational estimating of its results should be preceded with knowledge of complex wave field distribution in time and space. As a result one can estimate the blast load distribution in time. In considered conditions, the values of blast load are estimating using the empirical functions of overpressure distribution in time (Îp(t)). The Îp(t) functions are monotonic and are the approximation of reality. The distributions of these functions are often linearized due to simplifying of estimating the blast reaction of elements. The article presents a method of numerical analysis of the phenomenon of the air shock wave propagation. The main scope of this paper is getting the ability to make more realistic the Îp(t) functions. An explicit own solution using Finite Volume Method was used. This method considers changes in energy due to heat transfer with conservation of linear heat transfer. For validation, the results of numerical analysis were compared with the literature reports. Values of impulse, pressure, and its duration were studied.
Related Topics
Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
MichaÅ Lidner, Zbigniew SzczeÅniak,