Fresh Air for the Coliseum

The London Coliseum management has handed Arup, a London-based engineering firm, to improve support facilities, to provide better access to the building, and to enhance its general appeal, which includes improving theatre goers' comfort through the quality of ventilation. In order to learn exactly what to expect of its proposed ventilation system for the London Coliseum, Arup created a model composed of more than a half-million cells. Minor adjustments have already been made to improve the existing system. Arup plans a modern design in which air is supplied through nozzle banks in the domed ceiling. This will create a swirling airflow within the auditorium that won't affect the quality of the acoustics. Air is extracted at the back of three seating regions. Arup’s computational fluid dynamics study took approximately 5 weeks to complete on a DEC Alpha Unix workstation.

MONTECARLO SIMULATIONS FOR A LEP EXPERIMENT WITH UNIX WORKSTATION CLUSTERS

Modular systems of RISC CPU based computers have been implemented for large productions of Montecarlo simulated events for the DELPHI experiment at CERN. From a pilot system based on DEC 5000 CPU’s, a full size system based on a CONVEX C3820 UNIX supercomputer and a cluster of HP 735 workstations has been put into operation as a joint effort between INFN Milano and CILEA.