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Special Purpose Parallel Computer for Modelling Supramolecular Systems based on the Dynamic Lattice Liquid Model

Polanowski P., Jung J., Kielbik R.

Computational Methods in Science and Technology

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2010

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Vol. 16, No. 2

147-153

EN

A predictive description of the synthetic processes leading to complex macromolecules requires consideration of the spatial models. Hierarchical, structural and dynamic complexities of such systems require new methodological developments. The presented work provides effective tools for the modelling of the complex synthetic processes in the 3D space under controlled conditions. We propose constructing a parallel computing system which realizes the 3D architecture and the cooperative dynamics based on the dynamic lattice liquid (DLL) model. This can create new standards in the spatial resolution of the models allowing simulations of the systems comparable in sizes and complexity with the biological cells in the future.

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Simulation of liquid dynamics in a cryogenic mobile vessels

Lisowski E., Domagała M.

Archives of Foundry Engineering

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2010

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Vol. 10, iss. 3 spec.

77--80

EN

Technical gases becomes liquid in extremely low temperature ranging minus 200 °C and very high pressure what makes that transportation devices have to perform very strict requirement. Presented paper shows selected aspect of simulation of liquefied gas sloshing in aspect of requirements that mobile vessels have to fulfill. Mobile vessel which is the object of simulation is a two shell tank with vacuum and layer insulation between shells adapted to 20 ft container. It is assigned for see, railway and road transport and have to follow all of requirements for such transportation systems. Requirements for such tank are enclosed in standard ISO 1496-3 which deals with freight containers and standard EN13530-2 that describes vacuum, cryogenic vessels. The standards EN13530-2 defines that vessels which are to be filled equal or less than 80% should be fitted with surge plates to provide vessel stability and limit dynamic loads. Additionally surge plates area has to be at least 70% of cross section of the vessel and volume between surge plates shall be not higher than 7.5 m3. Structure of the vessel as well as the surge plate should resist of longitudinal acceleration of 2g. Additionally surge plates shall resists stresses caused by pressure distributed across the area of surge plate and the pressure shall be calculated as mass of liquid between plates and acceleration 2g. In this paper is presented way of simulation of dynamic behavior of liquefied Argon on vessel structure. A numerical methods like Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) were used for this purpose. Combination of both tools allowed to get pick value of dynamic pressure that arising during acceleration of 2g, which was assumed is 0.2 s and investigate resistance of vessel and container structure. Presented approach is called Fluid – Structure Interaction simulation. In CFD simulation was used Ansys CFX code, while for FEA calculations Pro/Mechanica package.

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Od algorytmu dynamicznej cieczy sieciowej do dedykowanego komputera równoległego

Polanowski P., Jung J., Kiełbik R., Napieralski A., Lichy K.

Przegląd Elektrotechniczny

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2008

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R. 84, nr 11

69-73

PL

W tym artykule przedstawiamy koncepcję i realizację dedykowanego komputera równoległego opartego na modelu dynamicznej cieczy sieciowej (ang. dynamic lattice liquid DLL). Jest to złożony układ elektroniczny, który zbudowano przy wykorzystaniu programowalnych tablic logicznych (ang. Field Programmable Gate Array FPGA).

EN

In this text we discuss conception and hardware realization of dedicated parallel computer based on dynamic lattice liquid algorithm (DLL). It is very complex electronic circuit which is built with use of Field Programmable Gate Array – FPGA.