A locally-adaptive unstructured grid technique to simulate 3-D blast waves over real terrains

被引：0

作者：

Voinovich, P ^{[1
]}

Timofeev, E ^{[1
]}

Galyukov, A ^{[1
]}

Saito, T ^{[1
]}

Takayama, K ^{[1
]}

机构：

[1] Tohoku Univ, Inst Fluid Sci, Shock Wave Res Ctr, Aoba Ku, Sendai, Miyagi 980, Japan

来源：

COMPUTATIONAL FLUID DYNAMICS '98, VOL 1, PARTS 1 AND 2 | 1998年

关键词：

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

An adaptive numerical technique is presented for simulation of long-range blast wave propagation and interaction with real ground surface geometries. The three-dimensional (3-D) unstructured Euler solver is based on a second-order accurate Godunov-type predictor-corrector scheme. The classical hierarchical refinement/derefinement method is applied to enhance resolution using restricted number of total grid nodes. An original amorphous data structure supports dynamic grid variations. Implementation of the technique on vector- and massively parallel supercomputer platforms is discussed. The main stages of problem-specific pre-processing are specified. The technique is applied to the analysis of blast waves due to an explosive volcano eruption and an imaginary accidental explosion.

引用

页码：837 / 841

页数：5

共 7 条

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