Blast and Impact Loading and Response of Structures
Full Session with Abstracts
The application of 3D computational modeling tools is essential in the determination of blast loads to be used in perform ing accurate structural analysis of industrial structures. One of the most laborious tasks when performed CFD or hydrocodes to determine the blast loadings is the definition of the computational mesh. T his is due in part to the complex nature of many industrial structures and settings. There is also a large variation in the size of items present in an industrial facility. These all make the definition of an appropriate mesh difficult. Characteristics of the mesh also directly affect the accuracy of the calculated results. To address these challenges, a Cartesian based Adaptive Mesh Refinement (AMR) scheme has been integrated with an existing 3D CFD code named CEBAM. This paper presents the method ology used for adaptation to structural elements and the solution to allow for accurate and efficient analysis. Issues such as how to effectively represent small-scale structural elements are discussed. Studies of both condensed phase and gas phase explosions sources are presented. Issues such as the required refinement for the two classes of scenarios are discussed and guidance is developed for use of the AMR approach on industrial explosion scenarios. Examples of the automatic meshing is are presented for a variety of industrial facilities.